DESIGN AND CONSTRUCTION STANDARD Leesburg in Virginia …

REVISIONS

DESIGN AND CONSTRUCTION STANDARD

NO. DATE:DRAWINGSS-1

PAGE31

The Town ofLeesburg in Virginia

1

ARTICLE 4-130.5B

SANITARY LATERALCONNECTION

NOTES:

A. The lateral sewer shall be installed to property line or the edge of easement including the cleanout by the utility contractor.B. Saddle may be used only when tapping into an existing sewer line.C. See detail SS-13 for cleanout valve box detail.D. Cleanout location tolerance is within 1' on either side of the property line.E. Lubricate threads on cap for easy removal. (Anti-Seize Lubricant or approved equal)F. The minimum slope shall be 2.08% and a maximum slope shall be 4% for a 4" lateral.G. The minimum slope shall be 1.0% and a maximum slope shall be 4% for 6" pipes.

Not To Scale

1'-0"Min.

P.V.C.

Water tight plug

Gravel beddingas requiredInvert of house

connection to beat crown of sewer

Compacted gravelVDOT No. 68 or 78

Spring line

45°

Tee, wye, orsaddle

45° Bend 45° Bends

Easement orproperty line

Valve Box

Finished grade

6"

Installed by plumberInstalled by utility contractor

6"


10/16/0723 04/27/10

REVISIONS



PAGE32


1 HOUSE LATERALSPUR

Not To Scale

ARTICLE 4-130.5B

NOTES:

A. Unless otherwise approved by public works, 6" laterals may be permitted to connect to 8" and 10" sewer mains. Premanufactured tees, wyes or sewer saddles may be used for all connections to 8" rigid pipe sewer mains.

B. See SS-1 and SS-3 for additional notes and details.

PLAN VIEW

Watertight plug

Valve box

Lateral material to beDIP or PVC meetingBOCA codes


Tee, wye or saddleconnection

Flow

90° Unlessotherwise shown

Granular material18" min. square

Sta

. giv

enon

pla

ns


Installed byplumber

Installed by utilitycontractor

REVISIONS



PAGE33


1

ARTICLE 4-130.5B

LATERAL FORDEEP SEWER

A. See SS-1 and SS-2 for additional notes and details.B. Cleanout must be installed by the utility (general) contractor.C. Cleanout location tolerance is within 1' on either side of the property line.D. Plumber shall cut the vertical riser at the required elevation to service the basement and install a wye, a 45° fitting, and test tee. The cleanout location will remain as installed by the utility contractor.E. The lateral riser pipe and fittings shall be of the same material as the main sewer to the point where the plumber cuts the vertical riser.F. This standard for deep lateral sewer is only applicable where the main sewer is at a depth greater than 10' below the final street grade.G. The minimum slope shall be 2.08% and a maximum slope shall be 4% for a 4" lateral.H. The minimum slope shall be 1.0% and a maximum slope shall be 4% for 6" pipes.

Not To Scale

Compacted gravelconforming to VDOTstandard No. 68 or 78

45° Bend


Test tee

Wye

12" Between45° bends

Finished grade

Valve box

Hou

se

12"Min.

6"

Installed by plumberInstalled by utility contractor

NOTES:

10/16/072

REVISIONS



PAGE34


14' DIA. MANHOLE

WITH OUTSIDE DROPCONNECTION

Not To Scale

ARTICLE 4-130.5E

NOTES:

A. VDOT Class B-2 Concrete to fill drop connection trench. Drop connection trench width to be the same as approach.

B. Manhole top castings in public or private street pavement are not to be anchored.

C. Drop connection may not interfere with steps.

D. Exterior of manhole to be asphalt coated.

E. Use of inside drop manhole is preferred.

F. See SS-7 for manhole detail.

1' min.

Four 3" x 4" holesto be provided foranchoring frame

Top of precast concretecone or flat topand block manhole

Concreteadjustment ring

Frame andcover

34" Variable length all thread

rod with nut and 2" washer

338"

1" Dia. bolthole

Ram-neck pioneer301 mastic orapproved equal

See detail

Provide min. 2" clearancebetween pipe opening

and riser joints.

45° ElbowSteps

Bench slope1" to 2" per foot

Grout

12" cement

pargingin 2 coats

Minimum 4"compacted gravel

Use drop connection whendrop exceeds 2'.

VDOT class B-2 concrete toundisturbed earth

Crown of bend shall be 4" min.above crown of main sewer

Concrete encasement toextend to first joint beyondmanhole drop connection

Compacted gravelNo. 68 or 78

Wye connection

REVISIONS



PAGE35


1FORCEMAINSEWAGE AIR

RELEASE VALVE

Not To Scale

A. Air Valve shall be provided with proper bracing.B. Manhole penetrations shall be via link seal, armor flex and/or rubber boot.C. Pipe shall be DIP Class 52 pipe.D. Acceptable air release manufacturers are: APCO, Crispen, Valmatic, and/or approved equal.E. Valve size shall be 1" for pipes up to 8" in diameter. Pipes larger than 8" will utilize a 2" valve.F. Saddle must be epoxy coated with stainless steel straps or all brass.

ARTICLE 4-130-9J

5" min.

6"

4' -

0" m

in.

6" Gravel

6' -

2" m

in.

Stainless steel strapsbraced to manhole

6' Black flushing hose

Quick disconnect coupling

8"1

2" Shutoff valve

Tapped tee ortapping saddleForcemain

Ball valve

Standard heavy dutyLeesburg sanitary sewermanhole frame and cover

Combination sewageair release valve

6' Diameter riser

Link seal

Forcemain

PLAN VIEW

SECTION VIEW

Open graded gravelVDOT No. 68 stoneabsorption pit

NOTES:

04/27/103

REVISIONS



PAGE36


1 INSIDE DROPCONNECTION

Not To Scale

ARTICLE 4-130.5E

NOTES:

A. The caps shall be secured to the drop fitting with 2' of galvanized or other non-rusting chain secured with two stainless steel machine screws, nuts and washers.

B. The pipe shall be chamfered to an angle of 15° before cementing in place.

C. The diameter of the vertical stack shall not be less than 6".

D. Exterior of manhole to be asphalt coated.

E. Use 4' manhole for pipes up to 8". Larger drop pipes will require a 5' manhole.

F. The vertical stack shall be strapped to the manhole at the joint when more than one section of pipe is used. The strap shall be of a non-corrosive material.

G. The elbow at the bottom of the stack may be either a 45° or 90° turn placed in the direction of flow in the manhole with a bench constructed to conform to the manhole bench.

F. See SS-7 for manhole detail.

Cross

Pipe sizes same

Precast concrete5' manhole section

Groutedthrust block

Cap 6"

3"6"

27"

6"

REVISIONS



PAGE37


1TYPICAL 4' - 0" I.D.

PRECAST CONCRETEMANHOLE

Not To Scale

A. Base section to provide minimum 6' clearance between the top of the pipe opening and bottom of bell and spigot joint.B. In all areas, base section footing must be spread a minimum of 8".C. Strapping of manhole to be used where within limit of 100-year floodplain.D. Exterior of manhole to be asphalt coated.E. Fasten the frame to cone per detail SS-37.F. Use two strands of 1" roll mastic between the cone and frame (RV-30).G. Use roll mastic between manhole sections in addition to gasket.H. All manholes require a chimney seal per detail SS-35.I. When adjusting existing manhole riser rings (HDPE or concrete) shall be used.

ARTICLE 4-130.5F

Stepsto be set

in line

See detail SS-37

Manufacturer's name tobe on inside of cone

See detail this sheetfor installation ofstrapping.

12" min.

See

not

e A

4" min.

Min. 4" compacted gravel

4" min.

8"5"

4' - 0"5' - 6" min.

1" min.

Grout

Slope bench1" to 2" per foot tospringline of pipe

Rubber plug tobe installed inlift hole andmortared

12" or 16"typ.

Manholestep castin place

Con

e he

ight

varie

s

8" max.

24" 8"

12" max. adjustment ring

Galvanized steelstrapping3" x 3

8" x 24" min.

6" m

in.

12"

3"

"Pioneer" mastic301 or approvedequal on exteriorside of joint

Notch foro-ring gasket

1" x 3" long stainlesshex. hd. bolt

Cast iron anchoror expansion

shield. Drill andgrout in place.

O-ringgasket

4"

Risers 1'-0" min.4'-0" max.

NOTES:

04/27/103

REVISIONS



PAGE38


1HEAVY DUTY

WATERTIGHT FRAMEAND COVER

NOTES:

A. Heavy duty machine bearing surfaces.

B. Unit weight equals approximately 350 lbs.

C. Material shall conform to A.S.T.M. A48.

D. See SS-16 for cover locking detail.

ARTICLE 4-130.5J(2)

Not To Scale

Two closed pickholes

1" Letters"LEESBURG SANITARY"

Two 58" - 11 Hex. Hd. stainless

steel cap screws with rubber andstainless steel washersSee SS-16 detail

14" Round rubber gasket

See detail SS-37

2714" dia.

2512" dia.

2312" dia.

36" dia.

8"

138"

34"

GROOVE DETAIL

.240 + .000-.005

.180

REVISIONS



PAGE39


1 VENT FORMANHOLES

Not To Scale

Vent opening shall be a min. of 3' abovefinished grade or 1' above 100-year floodelevation whichever is higher. Vent to beprovided with a bird screen.

Finished gradeto slope awayfrom manhole top

Manhole frameand cover

4" Schedule 80 PVC Pipe

A. Vent locations shall be indicated on both plan and profile.B. The design elevation of the vent pipe opening shall be indicated on both plan and profile.C. Manholes located within paved areas require vents to be moved to the utility strip or a grassy area.D. Prime post and attachment hardware with one coat of white rust inhibtive primer. Apply two coats of exterior semi-gloss white latex paint on vent piping, post and hardware.E. Drawing is for vent detail only.

Standard 4"Manhole PipeBoot withstainless steelband clampcast in place orcore drilled

24" m

in.

ARTICLE 4-130.5K

NOTES:

6" DI or steel pipe set in andfilled with concrete. 1/8" x 1 1/2"mounting straps to vent pipe at 2'centers above grade.

36" m

in6"

18" min 3000 psi concrete set onundisturbed or compacted earth

2 10/16/07

REVISIONS



PAGE40


1CONCRETE

ENCASEMENTDETAIL

NOTES:

A. The encased pipe shall be ductile iron. PVC pipes will not be allowed for encasement. The entire length of pipe to 2' outside the casing shall be wrapped with polyethylene per AWWA standards section C-105/A21.5.

B. Control joints and pipe joints for encasements shall coincide for spacing. The maximum distance between control joints shall be 24'.

C. Steel reinforcing #4 bars at 12", 4' long shall be provided across control joints for encasements.

D. During installation protect pipe against flotation.

E. At utility crossings, the concrete encasement shall extend 10' minimum on each side of the line at the point of crossing.

F. Applicable to both water and sanitary sewer lines.

ARTICLE 2-370.1B(1) and 4-130.5M(2)

Not To Scale

SHEETING OPEN CUT

SECTION VIEW

Sheeting

Compacted Type II,granular fill placedbetween concreteand undisturbed earth.

Support pipe onconcrete blockwhen encasing pipe.Concrete = 3000 psi

6" min.

6" min.

6" min.

6" min.

REVISIONS



PAGE41


1 MANHOLE STEPDETAIL

NOTES:

A. Steps must be steel with plastic or rubber coating unless otherwise specified for caustic service.

B. Steps may be M.A. Industries, Inc. "Plastic Step" or approved equal.

ARTICLE 4-130.5P

Not To Scale

Manhole Wall

12" Overall

5" M

in. C

lear

ance

6" M

ax. C

lear

ance

1"

1"

9" M

inim

um O

vera

ll

PLAN VIEW

REVISIONS



PAGE42


1 CONCRETE PIER

Not To Scale

ARTICLE 4-130.5Q

A. Pier only when a large diameter pipe (36" or larger) crosses over the other utility with a vertical clearance of less than 18".

B. Pier to be built on undisturbed earth. Concrete to be class "A3".

6"

2" min.2" min.

8" min.

Prop. pier

Storm sewer

Sanitary seweror water

Storm sewer

8" min.

6"

6"min.8"

16"min. (typ.)

L

L/2

Pier at nearestjoint - each side

Sanitary sewer or water

Compacted gravel No. 68 or 78

L = Length of pipe section

Prop. pier

NOTES:

REVISIONS



PAGE43


1 SANITARY LATERALCLEANOUT

Not To Scale

ARTICLE 4-130.6C

NOTE:

SEWER

6" or 4"Temporary plugat end of line Sanitary lateral

4" x 4" Wye or6" x 6" x 4" Wye

Riser (length varies)

PVC Cleanoutadapter and plug

See detail below

6"

A. Use standard valve box.B. Refer to Section 4-140-6C and GN-2 in Appendix A for additional details.C. Tape the tracer wire to top of the pipe at 2' intervals.D. The tracer wire requirement applies to details SS-1, SS-2 and SS-3.

Tracer wire

04/27/103

REVISIONS



PAGE44


1 CONCRETESLOPE ANCHOR

Not To Scale

ARTICLE 4-130.8F

NOTES:

A. Bearing area is based on 150 PSI test pressure and a soil bearing pressure of 2,000 PSF.B. Increase block dimensions as required on soils with lower bearing values.C. Concrete strength (f'c) shall be 3000 PSI.D. Wrap the pipe with polyethylene bags to 6" outside the concrete encasement.E. All reinforcing steel to be ASTM A-615, grade 60, #6 bars.F. Pipe anchors shall be constructed at 7' vertical intervals.

Finished Grade

Mega lugretainer glandor approved equal

Ductile IronPipe (DIP)

PLAN VIEW

4 #6 Barsbelow pipe

3 #6 Barsabove pipe

4 #6 Barsabove pipe

SECTION VIEW

12"

(min

.)12

"(m

in.)

8"(min.)

8"(min.)

TrenchWidth

Finished Grade

12"

(min

.)

12"

(min

.)

7'

12"(min.)

10/16/072

DIP

3 04/27/10

REVISIONS



PAGE45


1HEAVY DUTY AND

LOCK TYPE MANHOLEFRAME AND COVER

NOTES:

A. Heavy duty machine bearing surfaces.

B. Unit weight equals approximately 350 lbs.

C. Material shall conform to A.S.T.M. A48.

D. Frame must be fastened to the cone section.

ARTICLE 4-130.8M

Not To Scale

Two closed pickholes

1" Letters"LEESBURG SANITARY"

(Recessed Flush)

Two 58" - 11 Hex. Hd. stainless

steel cap screws with rubberand stainless steel washersSee SS-16 detail


See detail SS-37

2714" dia.

2512" dia.

2312" dia.

36" dia.

8"

138"

34"

2 - 1" Dia. vent holes

.180

.240 + .000-.005

GROOVE DETAIL

REVISIONS



PAGE46


1 MANHOLELOCKING COVER

ARTICLE 4-130.8M

Not To Scale

58" - 11 Hex. Hd. stainless steel

cap screws with rubber andstainless steel washers


For heavy dutywatertight cover,see detail SS-8.

138"

REVISIONS



PAGE47


1 FORCEMAINCLEANOUT

Not To Scale

ARTICLE 4-130.9H

A. The riser portion shall be restrained by mega-lug to the "Y" branch. The "Y" branch and riser pipe shall be DIP.B. Concrete pad to be used if the cleanout is located outside a paved area and provided with #3 rebar cage.C. A metallic warning tape indicating "Buried Pipe" shall be installed at least one foot above the pipe.D. Machine contact surfaces of frame and cover.E. DIP fittings shall be epoxy coated.

16"

12" SEWER

6" x 24" x 24"concrete pad(see note B)

134"

12"

12"

1"

1012"

12"

12"

912"

DIP

DIP

DIP

6"

Cast or ductile ironprotective cap.Cap must indicate "Sewer"

2" Brass plug4" End cap with

2" Tapped opening

Compacted gravel No. 68 or 78Y Branch

4" minimum epoxy coatedDIP class 52 pipe

Direction of flow

NOTES:

(seenote A)

10/16/0723 04/27/10

REVISIONS



PAGE48


1 CHAIN LINKFENCE

Not To Scale

ARTICLE 4-130.11D

158" O.D. rail brace

* * ****

* * ** * ** * *

** **** *

** *

**

**** * *

***

2 Truss rods(min. 3

8" dia.)

Gate frame2" O.D. pipeBarbed wire

Gate latch

158" O.D.

center plunger

Carry socket intogravel pit & conc.around (12" dia. min.)double swing gate

DOUBLE GATE DETAIL 12" x 12" Gravel pitto drain socket

Offset type hinges topermit 180° swing

4" O.D. Sch 40 galv.steel pipe (9.11 #/ft.)

42"

FENCE DETAIL1. As designated by Director for security of utilityinstallations.2. Minimum fence height shall be 8', not including barbedwire.

* ***

* *** * *

*** *

** * ***

* ***

10' on centermax. typ.

2.375" O.D. Sch 40galv. steel pipe(5.79#/ft.)Center rail corner &end post only15

8" O.D.

7 Gauge zinccoated steel wireattach fabric24" on center

Line postConc.

Corner & end post

Finished grade

38" Truss rod &

turnbuckle

Tension bar band1" wide - 11 gauge

Tension bar1 5

8" O.D.

3" O.D. Sch 40 galv.steel pipe (5.79 #/ft)

3 Strands barbed wireslanted out

3' - 0" 3' - 6"

12"12"

Conc.NOTES:

8' - 0"

10/16/072

REVISIONS



PAGE49


1

ARTICLE 4-151.1

WATER TEST TABLE8" and 10" DIA. PIPES

LENGTH OF MAIN LINE IN FEET 8" DIAMETER

Length of spur (feet) - 4' diameter

0255075

100125150175200225250275300

25.07.11.14.18.21.25.28.32.36.39.43.46.50

50.14.18.21.25.28.32.35.39.43.46.50.53.57

75.21.24.28.31.35.38.42.46.49.53.56.60.63

175.50.53.57.60.64.67.71.75.78.82.85.89.92

150.43.46.50.53.57.60.64.68.71.75.78.82.85

125.36.39.43.46.50.53.57.61.64.68.71.75.78

100.29.32.36.39.43.46.50.54.57.61.64.68.71

3751.071.101.141.171.211.241.281.321.351.391.421.461.49

3501.001.031.071.101.141.171.211.251.281.321.351.391.42

325.93.96

1.001.031.071.101.141.181.211.251.281.321.35

300.86.89.93.96

1.001.031.071.111.141.181.211.251.28

275.79.82.86.89.93.96

1.001.041.071.111.141.181.21

250.72.75.79.82.86.89.93.97

1.001.041.071.111.14

225.64.67.71.74.78.81.85.89.92.96.99

1.031.06

200.57.60.64.67.71.74.78.82.85.89.92.96.99

4001.151.131.221.251.291.321.361.401.431.471.501.541.57

4001.431.461.501.531.571.601.641.681.711.741.781.811.86

200.71.74.78.81.85.88.92.96.99

1.031.061.101.13

225.80.83.87.90.93.97

1.011.041.081.121.151.181.28

250.8992

.96

.991.031.061.101.141.171.211.241.281.31

275.98

1.011.051.081.121.151.191.231.261.301.331.371.60

3001.071.101.141.171.211.241.281.321.351.391.421.461.49

3251.161.191.231.261.301.331.371.411.441.481.511.551.58

3501.251.281.321.351.391.421.461.501.531.571.601.641.67

3751.341.371.411.441.481.511.551.591.621.661.691.731.76

100.35.38.42.45.49.52.56.60.63.67.70.74.77

125.44.47.51.54.58.61.65.69.72.76.79.83.86

150.53.56.60.63.67.70.74.78.81.85.88.92.95

175.62.65.69.72.76.79.83.87.90.94.97

1.011.04

75.26.29.33.36.40.43.47.51.54.58.61.65.68

50.17.20.24.27.31.34.38.42.45.49.52.56.59

25.09.12.16.19.23.26.30.34.37.41.44.48.51

0255075

100125150175200225250275300



REVISIONS



PAGE50


1

ARTICLE 4-151.1




0255075

100125150175200225250275300

25.10.13.17.20.24.27.32.35.38.42.45.49.52

50.21.24.28.31.35.38.42.46.49.53.56.60.63

75.32.35.39.42.46.49.53.57.60.64.67.71.74

175.75.78.82.85.89.92.96

1.001.031.071.101.141.17

150.64.67.71.74.78.81.85.89.92.96.99

1.031.06

125.53.56.60.63.67.70.74.78.81.85.88.92.95

100.42.45.49.52.56.59.63.67.70.74.77.81.84

3751.611.641.681.711.751.781.821.861.891.931.962.002.03

3501.501.531.571.601.641.671.711.751.781.821.851.891.92

3251.391.421.461.491.531.561.601.641.671.711.741.781.81

3001.281.311.351.381.421.451.491.531.561.601.631.671.70

2751.181.211.251.281.321.351.391.431.461.501.531.571.60

2501.071.101.141.171.211.241.281.321.351.391.421.461.49

225.96.99

1.031.061.101.131.171.211.241.281.311.351.38

200.85.88.92.95.99

1.021.061.111.131.171.201.241.27

4001.711.741.781.811.851.881.921.961.992.032.062.102.13

4002.142.172.212.242.282.312.352.392.422.462.492.532.56

2001.071.101.141.171.211.241.281.321.351.391.421.461.49

2251.201.231.271.301.341.371.411.451.481.521.551.591.62

2501.341.371.411.441.481.511.551.591.621.661.691.731.76

2751.471.501.541.571.611.641.681.721.751.791.821.861.89

3001.611.641.681.711.751.781.821.861.891.931.962.002.03

3251.741.771.811.841.881.911.921.992.022.062.092.132.16

3501.881.911.941.982.012.052.082.122.162.192.232.262.30

3752.012.042.082.112.152.182.222.262.292.332.362.402.43

100.53.56.61.63.67.70.74.78.81.85.88.92.95

125.67.70.73.77.81.84.88.92.95.99

1.021.061.09

150.80.83.87.90.94.97

1.011.051.081.121.151.191.22

175.94.97

1.011.041.081.111.151.191.221.261.291.331.36

75.40.43.47.50.54.57.61.65.68.72.75.79.82

50.26.29.33.36.40.43.47.51.54.58.61.65.68

25.13.16.26.30.33.37.41.44.48.51.55.58.62

0255075

100125150175200225250275300



REVISIONS



PAGE51


1

ARTICLE 4-151.1




0255075

100125150175200225250275300

25.16.19.23.26.30.33.37.40.44.48.51.55.58

50.32.35.39.42.46.49.53.56.60.64.67.71.74

75.48.51.55.58.62.64.69.72.76.80.83.87.90

1751.121.151.191.221.261.291.331.361.401.441.471.511.54

150.96.99

1.031.061.101.131.171.201.241.281.311.351.38

125.80.83.87.90.94.97

1.011.041.081.121.151.191.22

100.64.67.71.74.78.81.85.88.92.96.99

1.031.06

3752.452.482.522.552.592.622.662.692.732.772.802.842.87

3502.252.282.322.352.392.422.462.492.532.572.602.642.67

3252.092.122.162.192.232.262.302.332.372.412.442.482.51

3001.931.962.002.032.072.102.142.172.212.252.282.322.35

2751.771.801.841.871.911.941.982.012.052.092.122.162.19

2501.611.641.681.711.751.781.821.851.891.931.962.002.03

2251.451.481.521.551.591.621.661.691.731.771.801.841.87

2001.281.311.351.381.421.451.491.521.561.601.631.671.70

4002.572.602.642.672.712.742.782.812.852.892.922.962.99

4003.003.033.073.103.143.173.213.253.283.323.353.393.40

2001.501.531.571.601.641.671.711.751.781.821.851.891.92

2251.691.721.761.791.831.861.901.911.972.012.042.082.11

2501.881.911.951.982.022.052.092.132.162.202.232.272.30

2752.062.092.132.162.202.232.272.312.342.382.412.452.48

3002.252.282.322.352.392.422.462.502.532.572.612.642.67

3252.442.472.512.542.582.612.652.692.722.762.792.832.86

3502.632.662.702.732.772.802.832.882.912.952.983.023.05

3752.822.852.882.922.962.993.033.073.103.143.173.213.24

100.75.78.82.85.89.92.96

1.001.031.071.101.141.17

125.94.97

1.011.041.081.111.151.191.221.261.291.331.36

1501.121.151.191.221.261.291.331.371.401.441.471.511.54

1751.311.341.381.411.451.481.521.561.591.631.661.701.73

75.56.59.63.66.70.73.77.81.84.88.91.95.98

50.37.40.44.47.51.54.58.62.65.69.72.76.79

25.18.21.25.28.32.35.39.43.46.50.53.57.60

0255075

100125150175200225250275300



REVISIONS



PAGE52


1

ARTICLE 4-151.1

WATER TEST TABLE24" DIA. PIPES



0255075

100125150175200225250275300

25.21.24.28.31.35.38.42.46.49.53.56.60.63

50.42.45.49.52.56.59.63.67.70.74.77.81.84

75.63.67.71.74.78.81.85.89.92.96.99

1.031.06

1751.501.531.571.601.641.671.711.751.781.821.851.891.92

1501.281.311.351.381.421.451.491.531.551.601.631.671.70

1251.071.101.141.171.211.241.281.321.351.391.421.461.49

100.85.88.92.95.99

1.021.061.101.131.171.201.241.27

3753.223.293.293.323.363.393.423.473.503.543.573.613.64

3503.003.073.073.103.143.173.213.253.283.313.353.393.42

3252.792.862.862.892.932.963.003.043.073.113.143.183.21

3002.572.642.642.672.712.742.782.822.852.892.922.962.99

2752.362.432.432.462.502.532.572.612.642.682.712.752.78

2502.142.212.212.242.282.312.352.392.422.462.492.532.56

2251.932.002.002.032.072.102.142.182.212.252.282.322.35

2001.711.741.781.811.851.881.921.961.992.032.062.102.13

4003.433.503.503.533.573.603.643.683.713.753.783.823.85

REVISIONS



PAGE53


1 EXFILTRATION TESTASSEMBLY

Not To Scale

ARTICLE 4-151.1A

NOTE:

A. To be used for shallow, less than 6', manholes.

Clamp or brace tosupport tester onrim of manhole

3" Ringed plastic pipe

4' Lengths may bevaried to suit localconditions

3" Rigid plastic pipefemale adapter

3" Rigid plastic pipemale adapter

To allow fordisassembly

3" Rigidplastic pipe90° elbow

Sewer testplug

3" x 12" Reducer3" Rigid plastic pipe

length determined bysize of manhole

MANHOLE

REVISIONS



PAGE54


1

ARTICLE 4-152.8

AIR TEST MINIMUMHOLDING TIME

MINIMUM HOLDING TIME IN MINUTES REQUIREDFOR PRESSURE DROP FROM 3.5 TO 3.0 PSI

A. Air Test Table Based on Ramseier's Equation T=0.085 DK/Q (Q = 0.0010 CFM)

B. For Testing 4" Laterals With Sewer Main Add 2.8 Minutes to Appropriate Sewer Main Test Time.

255075

100125150175200225250275300350400450500

4" 2.8

2.8

8"5.7

5.76.67.68.59.5

6" 4.2

4.24.85.3

18"12.7

12.714.316.719.121.524.026.328.733.438.243.047.8

15"10.6

10.611.613.315.016.718.320.023.426.730.333.3

12"8.5

8.59.5

10.611.712.714.917.019.121.2

10"7.1

7.17.48.18.9

10.411.913.414.9

36"25.525.528.838.548.257.667.377.086.796.1

105.8115.5134.6154.0173.1192.5

33"23.323.324.332.240.148.356.264.472.380.588.496.6

112.7128.8144.9161.0

30"21.2

21.226.833.340.146.753.560.166.973.580.393.7

107.1120.5133.9

27"19.2

19.221.627.032.637.943.348.754.059.665.075.786.697.4

108.3

24"17.0

17.021.225.529.734.038.242.546.751.059.568.076.585.0

21"14.8

14.816.319.622.826.129.432.635.939.145.752.258.765.3

NOTES:

REVISIONS



PAGE55


1

ARTICLE 4-152.9

EQUIVALENCYTABLE

EQUIVALENT PSI

0.430.871.301.732.172.603.033.473.904.344.774.98

HEIGHT OFGROUND WATERABOVE PIPE INV.

(FT.)123456789

1011

11.5

For anything above 11.5 v.f., allowmaximum of 5.0 PSI.

A. Table based on 1.0 v.f. of water = 0.4335 PSI.

B. The appropriate PSI allowance for average vertical foot of ground water shall be added to the base starting pressure of 4.0 PSI, but in NO CASE shall the resulting pressure be more than 9.0 PSI.

C. Interpolate for fractions of a foot of water.

NOTES:

REVISIONS



PAGE56


BLANK

Not To Scale

THIS DETAILINTENTIONALLY

LEFT BLANK

10/16/072

REVISIONS



PAGE57


15' - 0" TO 4' - 0"

PRECAST CONCRETECONICAL REDUCER

NOTE:

A. Manhole reducing sections must be approved for use within a VDOT R.O.W.Not To Scale

8"1"

4" - 5"

6" 5' - 0"

6' - 0"

4" - 5"

2' - 0"min.

6"

8"

12" or 16"

4' - 0"

Notch for O-ringgasket

AA

TOP VIEW

SECTION A-A

ARTICLE 4-130.5L

REVISIONS



PAGE58


1 PRECAST CONCRETEMANHOLE FLAT TOP

NOTES:

A. Manhole tops must be approved for use within a VDOT R.O.W.B. Flat tops to be used only when specifically required or when necessitated by a height or invert conflict or as required.C. A maximum adjustment of six inches on a manhole flat top is allowed.

Not To Scale

AA

TOP VIEW

A

B

C

SECTION A-A

MANHOLE SIZE4' - 0" 5' - 0" 6' - 0"

72"60"48"58" 72" 86"

8"8"6"5" 6" 7"

ABCD

D

4" - 5"

ARTICLE 4-130.5L

REVISIONS



PAGE59


1 PRECAST CONCRETEMANHOLE REDUCER

NOTE:

A. Manhole reducing sections must be approved for use within a VDOT R.O.W.

Not To Scale

AA

TOP VIEW

A

B

C

D

4" - 5"

4" - 5"

4 - 10"4 - 0"

SECTION A-A

MANHOLE SIZE4' - 0" 5' - 0" 6' - 0"

72"60"48"58" 72" 86"

8"8"6"5" 6" 7"

ABCD

ARTICLE 4-130.5L

REVISIONS



PAGE60


1 UTILITY ANDDRAIN CROSSING

Not To Scale

ARTICLE 4-130.5A(3)c

CROSS SECTION A-A

LONGITUDINAL SECTION

A

A

Limits of trench excavation

See standardtrench detail

New pipe

Additional Type II, granular fillfrom mid-dia. of new pipe to mid-dia.of exist. pipe utility

Proposed or existingdrain or utility

See standardtrench detail

Proposed or existingdrain or utility

New pipe

1' - 0" 1' - 0"

1' - 6" min.

REVISIONS



PAGE61


1SANITARY SEWER PIPEABANDONMENT AT A

MANHOLE

Not To Scale

Existing manhole to remain.

Provide a masonry bulkhead at thedisconnected pipe prior to placingconcrete.

Parging to extend a minimum of 2"beyond manhole to pipe connection allaround.

Mechanical plug

Pipe stub Disconnectedpipe

20" min.

20" min.

Remove a min.of 2' of existing

pipe

4" min. typical atpipe stub anddisconnected pipe

Pipe to beabandoned

Pipe toremain

Existing pipe tomanhole connectionto remain

DETAIL

4" min.

ARTICLE 4-130.5W

REVISIONS



PAGE62


1SANITARY SEWER

MANHOLEABANDONMENT

Not To Scale

Existing finished grade

Remove manhole frame and coverand return to the Town of Leesburg

Remove manholeto a min. of 1'below finish grade

Fill manhole solid withlean mix concrete

For pipes 15" in diameterand smaller set mechanical

plugs into all pipesentering manholes.

For pipes 18" and larger provide a masonrybulkhead in lieu of mechanical plugs.

ARTICLE 4-130.5W

REVISIONS



PAGE63


1 GREASEINTERCEPTOR

NOTES:

A. This is an illustration for a grease interceptor only.

B. Grease interceptors shall be individually designed for each specific application required by the Town Code.

C. All designs shall be in accordance with International Plumbing Code and is subject to Loudoun County approval with issuance of the Loudoun County Building Permit.

Not To Scale

PLAN VIEW

2' - 0"

Sample site tobe accessiblefrom opening

2' - 0"

SECTION VIEW

6" Air port

Concretebaffle wall

Standard frameand cover

Risers tograde

Flow port

PVC teePVC tee

Standard clean outsee detail SS-1

1' -

6"

8" m

in.

1' -

6" 8" m

in.

2" min.

8"

ARTICLE 4-130.6C

REVISIONS



PAGE64


1 OIL AND SAND TRAP

Not To Scale

NOTES:

A. This is an illustration for an oil and sand trap only.

B. Sand traps shall be individually designed for each specific application as required by the Town Code.

C. Sand traps placed under paved areas shall be designed to support H-20 loading.

D. Precast septic type tanks with appropriately sized chambers may be used in grass areas.

E. The sediment collected by the sand trap shall be collected regularly and disposed of by a hazardous waste handling contractor licensed in the state of Virginia.

F. All designs shall be in accordance with International Plumbing Code and is subject to Loudoun County approval with issuance of the Loudoun County Building Permit.

ARTICLE 4-130.6C

REVISIONS



PAGE64a


1 MANHOLE CHIMNEYSEAL

Not To Scale

ARTICLE 4-130.5J(1)

A. For use in all sanitary sewer manholes or appurtances. The chimney seal may be omitted upon specific approval of the director in isolated locations when infiltration is highly unlikely.

B. Applicable to both eccentric or concentric manhole covers.

C. Approved internal seals shall be installed unless an external seal is specifically approved for installation by the director.

Manhole frame and cover

Rubber sleeve

Rubber extension

Chimney seal

Stainless steelexpansion bands

Precast concreteadjusting rings

Chimney height

Precast manholecone

NOTES:

REVISIONS



PAGE64b


1 DOGHOUSEMANHOLE

Not To Scale

A. Test manhole prior to cutting off existing sewer main.B. Non-shrink concrete to be poured around base and 2' above the base and against undisturbed earth.C. Manhole detail for reference only. Refer to details SS-7, SS-8, etc.D. Precast riser must be prefabricated.E. Doghouse manhole will be permitted on a case by case basis and as approved by the Director.

Manhole cover

Precast eccentric cone

Single cage weldedwire fabric reinforcingper ASTM C-478

Steps

Non-shrinkconcrete

Hole to be a min. of 4"to a max. of 8" largerthan the outside dia.of the existing pipe

(2) #4 Bars6" OC

O-ring or Forsheda joint

Invert and base arecontinuous pour

1' min.#4 Steel 1' centereach way

2' min.

Pour base to undisturbedearth or rock

5' - 0"

Water stop

2' m

in.

1' m

in.

4' -

0"1'

- 0"

to 4

' - 0

"

4"

4"

Precast riser

Precast riserbase

NOTES:

ARTICLE 4-130.5A(3)f

REVISIONS



PAGE64c


1 MANHOLE FRAMEFASTENING & ADJUSTMENT

Not To Scale

NOTES:

ARTICLE 4-130-5

2 - Strand of1" roll mastic

1" Dia. bolt hole

338"

34" Variable length

all thread rod withnut and 2" washer

Frame andcover

Concreteadjustment ring

Top of precast concretecone or flat top andblock manhole

Four 3" x 4" holesto be provided foranchoring frame

A. Bolts are required when manhole is outside paved area.

B. Use of HDPE or concrete adjustment rings are acceptable for sanitary sewer manholes located outside thepaved areas. Use of bricks are unacceptable.

REVISIONS



PAGE64d


3 NEWTYPICAL SECTIONSANITARY SEWER

MAINTENANCE ACCESS DRIVE

Not To Scale

A. Subgrade shall be compacted to minimum 95% density at optimum moisture in accordance with AASHTO T99-61.B. Spacing and height of delineators will be considered on a case by case basis depending on location of access road and proximity to residents.C. Maximum grade for the access drive shall be 15%.D. Access drive may need to be wider than 12' at turning radius and dead ends in order to accomodate a SU vehicle.

12" - 21A or ShotRock

CompactedSubgrade

12' - 0"

4" TopsoilSeeded

NOTES:

ARTICLE 4-130-5.R and T

4" x 4" Post Delineator4' High, Painted White1' Black Top (See Note B)

Cross SlopeMax 5%

04/27/10

REVISIONS



PAGE64e


EMERGENCY FORCEMAINPUMP CONNECTION

Not To Scale

3 NEW 04/27/10

With Letter "S"

Gland

2' x 2' x 4 "Concrete Pad(Typ.)

3'-0

"

Retainer

at all fittingsPlug Valve Use Megalug Restraint

Welded Wire Fabric4 x 4 x W4 x W4

Forcemain Tee

Forcemain

3'-6

" (M

in C

over

)

Valve Box and Cover

Camlok Coupling or Approved Equal (Arrange to face pump stationentrance). Coordinate with owner to match hose type.

Documents

DESIGN AND CONSTRUCTION STANDARD Leesburg in Virginia …