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G-1
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
40004010See pagesG-2 to G-5
40204030
See pagesG-6 to G-9
Typical cross section of Davit tubes
Each Hughes Brothers Steel Davit is assigned a serial number atthe time of manufacture This allows us to trace material welding
and other manufacturing procedures After producing over100000 steel davit arms since the late 1970s we have yet to
have a single failure Davits can be custom designed for aparticular application
100 mechanical proof loading and magnetic particle verificationof critical welds per ASTM E709 in conjunction with
ANSI AWS D11 are available as quality control options Ourstandard production procedure utilizes mil-standard 105D
sampling for proof load testing unless specified otherwise
Hughes Brothers provides Steel Davits for use on wood
concrete or steel poles
Hughes Brothers SteelDavit Arms
Ordering InformationThis catalog section will help you determine which base plate ampphase attachment option are most suited to your individual
application
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G-2
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4000 Series 16
o
Rise AngleHeavy Duty Steel Davit Arms
Steel Davit Arms
7
16oClearance
oslash
See pages G-10thru G-13 for base
plate options
See page G-14 forend plate options
R i s e
Length
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2-0 1-6 78 1-11 18
3-0 2-1 2-8 144-0 2-6 12 3-55-0 3-0 14 4-1 14
6-0 3-6 4-9 127-0 4-0 5-6
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G-3
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4000 Series
Stock No Arm Length Rise Approx Wt (lbs)
4000A35A33G 3-6 0-5 65
4000A40A33G 4-0 0-7 70
4000A45A33G 4-6 0-9 75
4000A50A33G 5-0 0-11 80
4000A55A33G 5-6 1-1 90
4000A60A33G 6-0 1-3 95
4000A65A33G 6-6 1-5 105
4000A70A33G 7-0 1-7 115
4000A75A33G 7-6 1-9 120
4000A80A33G 8-0 1-11 130
4000A85A33G 8-6 2-1 135
4000A90A33G 9-0 2-3 145
4000A95A33G 9-6 2-5 150
4000A100A33G 10-0 2-7 160
4000A105A33G 10-6 2-9 170
4000A110A33G 11-0 2-11 185
(G = Galvanized)Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Ordering options
Example 4000 A 105 A 33 G
Steel Davit Arms
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G-4
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series 24deg Rise Angle
Heavy Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 0
5 - 0 2 - 6 3 - 76 - 0 2 - 10 12 4 - 2
7 - 0 3 - 3 4 - 9
Steel Davit Arms
Length
Clearance
24o
7
R i s e
See page G-14 forend plate options
oslash
See pages G-10
thru G-13 for baseplate options
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G-5
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series
(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)
Phase Attachment Designs
See Page G-14
Tube Style amp Rise
ORDERING OPTIONS
Example 4010 A 105 A 33 G
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
4010A35A33G 3-6 0-11 65
4010A40A33G 4-0 1-2 70
4010A45A33G 4-6 1-5 75
4010A50A33G 5-0 1-7 80
4010A55A33G 5-6 1-10 90
4010A60A33G 6-0 2-0 95
4010A65A33G 6-6 2-3 105
4010A70A33G 7-0 2-5 115
4010A75A33G 7-6 2-8 120
4010A80A33G 8-0 2-10 130
4010A85A33G 8-6 3-1 135
4010A90A33G 9-0 3-3 145
4010A95A33G 9-6 3-6 150
4010A100A33G 10-0 3-8 160
4010A105A33G 10-6 3-11 170
4010A110A33G 11-0 4-1 185
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-2
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4000 Series 16
o
Rise AngleHeavy Duty Steel Davit Arms
Steel Davit Arms
7
16oClearance
oslash
See pages G-10thru G-13 for base
plate options
See page G-14 forend plate options
R i s e
Length
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2-0 1-6 78 1-11 18
3-0 2-1 2-8 144-0 2-6 12 3-55-0 3-0 14 4-1 14
6-0 3-6 4-9 127-0 4-0 5-6
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G-3
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4000 Series
Stock No Arm Length Rise Approx Wt (lbs)
4000A35A33G 3-6 0-5 65
4000A40A33G 4-0 0-7 70
4000A45A33G 4-6 0-9 75
4000A50A33G 5-0 0-11 80
4000A55A33G 5-6 1-1 90
4000A60A33G 6-0 1-3 95
4000A65A33G 6-6 1-5 105
4000A70A33G 7-0 1-7 115
4000A75A33G 7-6 1-9 120
4000A80A33G 8-0 1-11 130
4000A85A33G 8-6 2-1 135
4000A90A33G 9-0 2-3 145
4000A95A33G 9-6 2-5 150
4000A100A33G 10-0 2-7 160
4000A105A33G 10-6 2-9 170
4000A110A33G 11-0 2-11 185
(G = Galvanized)Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Ordering options
Example 4000 A 105 A 33 G
Steel Davit Arms
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G-4
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series 24deg Rise Angle
Heavy Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 0
5 - 0 2 - 6 3 - 76 - 0 2 - 10 12 4 - 2
7 - 0 3 - 3 4 - 9
Steel Davit Arms
Length
Clearance
24o
7
R i s e
See page G-14 forend plate options
oslash
See pages G-10
thru G-13 for baseplate options
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G-5
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series
(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)
Phase Attachment Designs
See Page G-14
Tube Style amp Rise
ORDERING OPTIONS
Example 4010 A 105 A 33 G
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
4010A35A33G 3-6 0-11 65
4010A40A33G 4-0 1-2 70
4010A45A33G 4-6 1-5 75
4010A50A33G 5-0 1-7 80
4010A55A33G 5-6 1-10 90
4010A60A33G 6-0 2-0 95
4010A65A33G 6-6 2-3 105
4010A70A33G 7-0 2-5 115
4010A75A33G 7-6 2-8 120
4010A80A33G 8-0 2-10 130
4010A85A33G 8-6 3-1 135
4010A90A33G 9-0 3-3 145
4010A95A33G 9-6 3-6 150
4010A100A33G 10-0 3-8 160
4010A105A33G 10-6 3-11 170
4010A110A33G 11-0 4-1 185
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-3
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4000 Series
Stock No Arm Length Rise Approx Wt (lbs)
4000A35A33G 3-6 0-5 65
4000A40A33G 4-0 0-7 70
4000A45A33G 4-6 0-9 75
4000A50A33G 5-0 0-11 80
4000A55A33G 5-6 1-1 90
4000A60A33G 6-0 1-3 95
4000A65A33G 6-6 1-5 105
4000A70A33G 7-0 1-7 115
4000A75A33G 7-6 1-9 120
4000A80A33G 8-0 1-11 130
4000A85A33G 8-6 2-1 135
4000A90A33G 9-0 2-3 145
4000A95A33G 9-6 2-5 150
4000A100A33G 10-0 2-7 160
4000A105A33G 10-6 2-9 170
4000A110A33G 11-0 2-11 185
(G = Galvanized)Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Ordering options
Example 4000 A 105 A 33 G
Steel Davit Arms
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G-4
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series 24deg Rise Angle
Heavy Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 0
5 - 0 2 - 6 3 - 76 - 0 2 - 10 12 4 - 2
7 - 0 3 - 3 4 - 9
Steel Davit Arms
Length
Clearance
24o
7
R i s e
See page G-14 forend plate options
oslash
See pages G-10
thru G-13 for baseplate options
8132019 Perpipaan David
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G-5
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series
(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)
Phase Attachment Designs
See Page G-14
Tube Style amp Rise
ORDERING OPTIONS
Example 4010 A 105 A 33 G
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
4010A35A33G 3-6 0-11 65
4010A40A33G 4-0 1-2 70
4010A45A33G 4-6 1-5 75
4010A50A33G 5-0 1-7 80
4010A55A33G 5-6 1-10 90
4010A60A33G 6-0 2-0 95
4010A65A33G 6-6 2-3 105
4010A70A33G 7-0 2-5 115
4010A75A33G 7-6 2-8 120
4010A80A33G 8-0 2-10 130
4010A85A33G 8-6 3-1 135
4010A90A33G 9-0 3-3 145
4010A95A33G 9-6 3-6 150
4010A100A33G 10-0 3-8 160
4010A105A33G 10-6 3-11 170
4010A110A33G 11-0 4-1 185
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-4
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series 24deg Rise Angle
Heavy Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 0
5 - 0 2 - 6 3 - 76 - 0 2 - 10 12 4 - 2
7 - 0 3 - 3 4 - 9
Steel Davit Arms
Length
Clearance
24o
7
R i s e
See page G-14 forend plate options
oslash
See pages G-10
thru G-13 for baseplate options
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G-5
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series
(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)
Phase Attachment Designs
See Page G-14
Tube Style amp Rise
ORDERING OPTIONS
Example 4010 A 105 A 33 G
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
4010A35A33G 3-6 0-11 65
4010A40A33G 4-0 1-2 70
4010A45A33G 4-6 1-5 75
4010A50A33G 5-0 1-7 80
4010A55A33G 5-6 1-10 90
4010A60A33G 6-0 2-0 95
4010A65A33G 6-6 2-3 105
4010A70A33G 7-0 2-5 115
4010A75A33G 7-6 2-8 120
4010A80A33G 8-0 2-10 130
4010A85A33G 8-6 3-1 135
4010A90A33G 9-0 3-3 145
4010A95A33G 9-6 3-6 150
4010A100A33G 10-0 3-8 160
4010A105A33G 10-6 3-11 170
4010A110A33G 11-0 4-1 185
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-5
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4010 Series
(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-16 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)
Phase Attachment Designs
See Page G-14
Tube Style amp Rise
ORDERING OPTIONS
Example 4010 A 105 A 33 G
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
4010A35A33G 3-6 0-11 65
4010A40A33G 4-0 1-2 70
4010A45A33G 4-6 1-5 75
4010A50A33G 5-0 1-7 80
4010A55A33G 5-6 1-10 90
4010A60A33G 6-0 2-0 95
4010A65A33G 6-6 2-3 105
4010A70A33G 7-0 2-5 115
4010A75A33G 7-6 2-8 120
4010A80A33G 8-0 2-10 130
4010A85A33G 8-6 3-1 135
4010A90A33G 9-0 3-3 145
4010A95A33G 9-6 3-6 150
4010A100A33G 10-0 3-8 160
4010A105A33G 10-6 3-11 170
4010A110A33G 11-0 4-1 185
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-6
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series 16o Rise AngleMedium Duty Steel Davit Arms
Insulator Clearance ClearanceString θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 6 78 1 - 11 18
3 - 0 2 - 1 2 - 8 144 - 0 2 - 6 12 3 - 5
5 - 0 3 - 0 14 4 - 1 146 - 0 3 - 6 4 - 9 12
7 - 0 4 - 0 5 - 6
Steel Davit Arms
Length
See page G-14 for endplate options
R i s e
Clearance16o
7
See pages G-10 thru
G-13 for base plateoptions
oslash
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-7
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4020 Series
4020A35A33G 3-6 0-5 60
4020A40A33G 4-0 0-7 65
4020A45A33G 4-6 0-9 70
4020A50A33G 5-0 0-11 75
4020A55A33G 5-6 1-1 85
4020A60A33G 6-0 1-3 90
4020A65A33G 6-6 1-5 95
4020A70A33G 7-0 1-7 105
4020A75A33G 7-6 1-9 110
4020A80A33G 8-0 1-11 120
4020A85A33G 8-6 2-1 125
4020A90A33G 9-0 2-3 135
4020A95A33G 9-6 2-5 140
4020A100A33G 10-0 2-7 145
4020A105A33G 10-6 2-9 150
4020A110A33G 11-0 2-11 160
ORDERING OPTIONS
Example 4020 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)
(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-8
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
4030 Series 24deg Rise Angle
Medium Duty Steel Davit Arms
Insulator Clearance Clearance
String θ=45deg θ=30deg
Length Swing Angle Swing Angle
2 - 0 1 - 4 12 1 - 9 14
3 - 0 1 - 9 2 - 54 - 0 2 - 1 12 3 - 05 - 0 2 - 6 3 - 7
6 - 0 2 - 10 12 4 - 27 - 0 3 - 3 4 - 9
Length
See page G-14 forend plate options
R i s e
oslash
Clearance
24o
7
See pages G-10 thru G-13for base plate options
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-9
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
4030 Series
4030A35A33G 3-6 0-11 60
4030A40A33G 4-0 1-2 65
4030A45A33G 4-6 1-5 70
4030A50A33G 5-0 1-7 75
4030A55A33G 5-6 1-10 85
4030A60A33G 6-0 2-0 90
4030A65A33G 6-6 2-3 95
4030A70A33G 7-0 2-5 105
4030A75A33G 7-6 2-8 110
4030A80A33G 8-0 2-10 120
4030A85A33G 8-6 3-1 125
4030A90A33G 9-0 3-3 135
4030A95A33G 9-6 3-6 140
4030A100A33G 10-0 3-8 145
4030A105A33G 10-6 3-11 150
4030A110A33G 11-0 4-1 160
ORDERING OPTIONS
Example 4030 A 105 A 33 G(G = Galvanized)
Coating (W = Self Weathering)(P = Painted)
Material Strength (KSI)
See Page G-17 for load ratings
Base Plate Design
See Pages G-10 thru G-13
Length (feet)Phase Attachment Designs
See Page G-14
Tube Style amp Rise
Steel Davit Arms
Stock No Arm Length Rise Approx Wt (lbs)
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
8132019 Perpipaan David
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
8132019 Perpipaan David
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
8132019 Perpipaan David
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-10
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
1 4
Base Plate
Bearing Plate
9 pole dia min
1 mounting bolts
nuts and washerssold separately
B
Styles A amp B work equally well on concrete poles
1 4
Base Plate
9 pole dia min
Bearing Plate
78 mounting bolts nuts and
washers sold separately
A
See Table A on page G-15
Many variations of base plate options areavailable Consult Hughes Brothers Engineer-
ing Staff before ordering
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-11
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
Option C works equally well on concrete poles
Option C in double circuit configuration on wood pole
Bearing Plate
Base Plate
Shim amp Shim bolt as requiredOrdered separately
1 4
1 threaded rods nuts andwashers sold separately
CMany variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
See Table A on page G-15
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
8132019 Perpipaan David
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
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G-12
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Bend angle to be
specified See table Bon page G-15
1 4
78 mounting bolts
nuts and washerssold separately
oslash
Steel Davit Arms
oslash
Bend angle to bespecified See table
B on page G15
2 - 1
2
1 2
- 1 4
78 mounting boltsnuts and washers
sold separately
Bend angle to be
specified See tableB on page G-15
1 mounting bolts
nuts and washerssold separately
oslash
E
1 4
Many variations of base plate options are avail-able Consult Hughes Brothers Engineering Staff
before ordering
Base Plate OptionsSee Table A on page G-15
Options D amp E shown here in a steelpole application
D
F
8132019 Perpipaan David
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
8132019 Perpipaan David
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
8132019 Perpipaan David
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
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G-13
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Base Plate Options
J S p e c i
f y
Specify
S
p e c
i f y
K
1 mounting bolts nuts andwashers ordered separately
58 Base Plate
See Table A on page G-15
Many variations of base plate options are
available Consult Hughes Brothers Engineer-ing Staff before ordering
8132019 Perpipaan David
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
8132019 Perpipaan David
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
8132019 Perpipaan David
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
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G-14
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
1-12 hole chamfered
both sides
4-34 4-34
4 -
3 8
4 -
3 8
5 - 1
2
4 -
3 8
1-12 hole chamferedboth sides
1-12 holes chamfered
both sides
5 - 1 2
1-12 holes chamferedboth sides
2821 Swinging Angle
Bracket
4-34 4-34
Phase Attachment Options
A
B
C
D
8132019 Perpipaan David
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
8132019 Perpipaan David
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1725
G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1825
G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1925
G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
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G-15
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Davit Series
4020 amp 4030
4000 amp 4010
Base Plate Bend Angles
TABLE B
TABLE A
Bend Angle(degrees)
605547
4440
3668
635854
5047
4237
3030
Pole Dia
789
1011
129
101112
1314
1618
2022
Base Plate Bend
H
IJ
KL
MNO
P
QRS
TUV
W
Angle Designation
Strength Tables
Design Note Check both the ultimate
tube strength and the ultimate strengthbased on bolt strengths
Contact Hughes Brothers Engineering Dept for ultimate strengths based on other types of bolts
Ultimate Strength Based on ANSI C1351 Bolt Strengths
Arm AampD B C amp E F
(feet) (2) 78 Bolts (2) 1 Bolts (3) 78 Bolts
30 5720 7870 1144035 4900 6700 9800
40 4290 5910 858045 3810 5250 7620
50 3450 4720 690055 3120 4300 624060 2860 3940 5720
65 2630 3630 526070 2450 3380 4900
75 2280 3150 456080 2140 2950 4280
85 2020 2780 404090 1710 2630 382095 1800 2490 3600
100 1710 2360 3420105 1630 2250 3260
110 1550 2150 3100
Length
Base Plate Configuration Type
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
8132019 Perpipaan David
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
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Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
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G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
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G-16
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
TABLE C
Steel Davit Arms
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
30 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
35 7550 6150 4700 3500 3100 6250 5000 3900 2800 255040 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
45 7550 6150 4700 3500 3100 6250 5000 3900 2800 255050 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
55 7550 6150 4700 3500 3100 6250 5000 3900 2800 255060 7550 6150 4700 3500 3100 6250 5000 3900 2800 255065 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
70 7550 6150 4700 3500 3100 6250 5000 3900 2800 255075 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
80 7550 6150 4700 3500 3100 6250 5000 3900 2800 255085 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
90 7550 6150 4700 3500 3100 6250 5000 3900 2800 255095 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550100 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
105 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550110 7550 6150 4700 3500 3100 6250 5000 3900 2800 2550
Ultimate Tube Strength lb(Based on yield strength of steel)
Strength Table4000 4010 Series Steel Davits
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
8132019 Perpipaan David
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G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1825
G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
8132019 Perpipaan David
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G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
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G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
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G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
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G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
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G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1725
G-17
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Strength Table4020 4030 Series Steel Davits
Steel Davit Arms
ARM VERTICAL LONGITUDINAL
LENGTH(FEET) 80KSI 65KSI 50KSI 36KSI 33KSI 80KSI 65KSI 50KSI 36KSI 33KSI
Ultimate Tube Strength lb(Based on yield strength of steel)
TABLE C
(contd)
30 6550 5350 4100 3000 2700 5920 4810 3700 2660 244035 6550 5350 4100 3000 2700 5420 4400 3390 2440 223040 6550 5350 4100 3000 2700 5050 4100 3150 2270 208045 6550 5350 4100 3000 2700 4760 3860 2970 2140 1960
50 6550 5350 4100 3000 2700 4520 3620 2820 2030 186055 6550 5350 4100 3000 2700 4330 3520 2710 1950 1780
60 6550 5350 4100 3000 2700 4170 3390 2610 1880 172065 6550 5350 4100 3000 2700 4040 3280 2520 1820 1660
70 6550 5350 4100 3000 2700 3920 3190 2450 1760 162075 6550 5350 4100 3000 2700 3820 3110 2390 1720 158080 6550 5350 4100 3000 2700 3740 3040 2330 1680 1540
85 6550 5350 4100 3000 2700 3660 2970 2290 1640 151095 6550 5350 4100 3000 2700 3590 2920 2240 1610 1480
90 6550 5350 4100 3000 2700 3530 2870 2210 1590 1450100 6550 5350 4100 3000 2700 3480 2820 2170 1560 1430
105 6550 5350 4100 3000 2700 3430 2780 2140 1540 1410110 6550 5350 4100 3000 2700 3380 2750 2110 1520 1390
NOTE
Check both the ultimate tube strength and the ultimate bolt strengthThe ultimate strength of the complete unit is the lesser of the two strengths
8132019 Perpipaan David
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G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1925
G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2025
G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1825
G-18
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
C4484 Static Support ArmsHughes Brothers C4484 Static Support Arms are used to offset theshield wire a greater distance from the pole Tube sizes are varied
depending on load requirements Contact Hughes Brothers Engi-neering staff for assistance
Grounding Lug(optional)
1 2
L0-9 to 4-0
10o
78 mountingbolts
Standard End Triangular End
All holes are 1-12
chamfered both sides
9-12
5 - 1 2
Ordering Example
C4484- CDE L G
Grounding Lug (optional)
L Length in inches
CDE for triangular end plateC for standard end plate
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1925
G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2025
G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 1925
G-19
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
12
1518
21
24
27
30
3336
Stock No L
C4466-B10
C4466-B125C4466-B15
C4466-B175
C4466-B20
C4466-B225
C4466-B25
C4466-B275C4466-B30
C4466 Post Insulator
Stand-Off ArmHughes Brothers C4466 Series of Line Post
Insulator Stand-Off Arms are used for speciaapplications requiring a 1 ft to 3 ft clearance
from the pole
L
AC
1316 Hole
10
1010
10
12
12
12
1212
A
2
22
2
2
2
2
22
B
4
44
4
5
5
5
55
C Wtlbs
33
3537
39
43
46
49
5255
Insulator
Mtg Hole
Post Insulator
(by others)
B
Ordering Example
C 4 4 6 6 - B 1 7 5 AA for 1316 ins mtg holeB for 1516 ins mtg hole
Length L in feet
1316Hole
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2025
G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2025
G-20
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Steel Davit Arms
Ordering Example
C4484-B45A
Base Plate Code Suffix
Base Plate
TypeAB
CD
EF
Pole Dia
Range15-1818-21
21-2424-28
12-1526-31
Take off link available as an option by adding
suffix DET as follows C4484-BDET45A
Stock No Length A
C4484-B40 4 - 0 2 - 0C4484-B45 4 - 6 2 - 3C4484-B55 5 - 6 3 - 3
1 2
DET Suffix
A
Length
3
1316 1316
See note
78 Bolts Nuts amp Washers
(ordered separately)
Hughes Brothers C4484 Series of Distribution Underbuild Armsare manufactured from tube steel The tube size varies with
loading requirements Contact Hughes Brothers Engineeringstaff for assistance
C4484 Distribution
Underbuild Arms
All vangs have a 1-14 hole
chamfered both sides
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2125
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
B2751-A
Steel Underbuild Bracket
The B2751-A steel underbuild bracket is designed to allow for the
addition of underbuild cables
The bracket is manufactured from galvanized steel tube with an ulti-
mate vertical load rating of 765 lbs per position All pole mountingand cable mounting holes are 1116rdquo diameter
Ordering ExampleB2751-A Unit Wt 18 lbs
4 -
1 8
18 chamfer both sides
1116 dia hole
4
18 chamferboth sides
1116 dia hole
765 lbs Ultimate
1-12
765 lbs Ultimate
o15
1 - 4
1 - 0
1116 KeyholeSlot
3 4
1116dia Hole
8
Steel Davit Arms
G-201
Other configurations available
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2225
G-21
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Stock No Arm Size Length Radius X Rise Unit Wt
C4080-B 45 5 18 x 5 - 8 4 - 6 10 - 7 12 1 - 10 123 lbs
C4080-B 50 5 18 x 5 - 8 14 5 - 0 11 - 7 12 1 - 11 12 130 lbs
C4080-A 55 5 18 x 5 34 - 8 12 5 - 6 12 - 7 16 1 - 11 34 142 lbsC4080-A 60 5 18 x 5 34 - 8 34 6 - 0 13 - 7 16 2 - 1 38 150 lbs
C4080-A 65 5 18 x 5 34 - 9 6 - 6 14 - 7 16 2 - 2 78 158 lbsC4080-A 70 5 18 x 5 34 - 9 14 7 - 0 15 - 7 16 2 - 4 12 167 lbs
C4080-A 75 5 18 x 6 78 - 9 12 7 - 6 16 - 7 16 2 - 6 180 lbs
C4080-A 80 5 18 x 6 78 - 9 34 8 - 0 17 - 7 16 2 - 7 58 194 lbsC4080-A 85 5 18 x 6 78 - 9 78 8 - 6 18 - 7 16 2 - 9 12 208 lbs
C4080-A 90 5 18 x 6 78 - 10 18 9 - 0 19 - 7 16 2 - 10 34 223 lbs
Length
5000 lbsUltimateVertical
Rating
Radius
6
1 -
1 2
X
The Hughes Brothers C4080 Series Wood Davits makea visually pleasing structure Manufactured using
ANSI 052 Douglas-fir Glu-laminated timbers which arepenta treated and assembled to a steel base A variety
of conductor attachment configurations are availableThe unit mounts with (3) 78 mounting bolts (ordered
separately)
C4080 Series Medium
Duty Wood Davit Arm
Wood Davit Arms
Rise
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2325
G-22
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Swinging Angle Bracket
Dead End Tee
Optional Conductor
AttachmentConfigurations
NoteC4080-C Series substitute C4080-Cfor C4080-A sizes to order swingingangle bracket
NoteC4080-D Series substitute C4080-D
for C4080-A to order with dead endtee option
Wood Davit Arms
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2425
G-23
Hughes Brothers IncPO Box 159 210 N 13th Seward NE 68434 Phone (402) 643-2991 Fax (402) 643-2149 copy2001 Hughes Brothers Inc
Wood Davit Arms
C4113 Series Light Duty
Wood Davit ArmThe Hughes Brothers C4113 Series uses a smaller woodsection for lighter loading criteria
Stock No Arm Size Length Radius X Rise Unit Wt
C4113-B 45 3 18 x 5 - 8 4 - 6 10 - 7 12 1 - 11 95 lbsC4113-B 50 3 18 x 5 - 8 5 - 0 11 - 7 12 2 - 0 58 99 lbs
C4113-A 55 3 18 x 5 - 8 5 - 6 12 - 7 16 2 - 2 18 103 lbsC4113-A 60 3 18 x 5 - 8 6 - 0 13 - 7 16 2 - 3 38 108 lbs
C4113-A 65 3 18 x 5 - 8 6 - 6 14 - 7 16 2 - 5 38 112 lbs
C4113-A 70 3 18 x 5 - 8 14 7 - 0 15 - 7 16 2 - 7 18 116 lbsC4113-A 75 3 18 x 5 - 8 14 7 - 6 16 - 7 16 2 - 9 121 lbsC4113-A 80 3 18 x 5 - 8 34 8 - 0 17 - 7 16 2 - 10 78 127 lbsC4113-A 85 3 18 x 5 - 9 8 - 6 18 - 7 16 3 - 0 34 133 lbs
Length
2500 lbs
UltimateVertical
RatingRis
6
X
Radius 1 -
1 2
34 mounting
bolts nuts ampwashers ordered
separately
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
8132019 Perpipaan David
httpslidepdfcomreaderfullperpipaan-david 2525
G-24
H h B h I
Wood Davit Replacement
Steel Davit Replacement
For Wood Davits
C4619 Series
If maintenance is required one option may be to replacethe wood member with the C4625 or C4619 replacement
davit The steel tube is furnished to fit in the existing basefitting used by the wood davit Contact Hughes Brothers
Engineering staff for assistance
C4625 Series
