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NOMINAL MAJOR
AXJS - __,'
13
15
17
18
20
21
23 24
26
28 29
31
32
34
35
37 39 40
42
43
45
48
51
54
57 61
64
67
70
73
76
79 83
86
89
92
ACTUAL MAJOR
AXIS . ·-
13.4
15.0
16.6
18.1
19.7 21.3
22.8 24.4
26.0
27.6
29.1 30.7
32.3
33.8
35.4
37.0 38.6
40.1
41.7
43.3
44.8
48.0
51.l54.3
57.4
60.5
63.7 66.8
70.0
73.1
76.3
79.4
82.5
85.7
88.8
92.0
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
GAGE
24 24
24
24
24
24 24 24
22
?2
22 22 n
22
22
22
22
22
22
22
??
22
20
20
20
20
20
20 20
18
18
18
18
18
18
18
MlNOR
AXIS j
[AJOR AXI]
REINFORCEMENT PER STATIC PRESSURE
+2" +(j" +10"
. -
NR A5 A4
NR A5 A4
AS A4 A3
AS A4 A]
AB A4 B3
AS 84 B)
A5 B4 B)
AS 84 BJ
CB C5 C3
C8 C5 C3
CB � DJ
C5 D4 DJ
C5 D4 m
m D4 DJ
05 B E2.5
05 B E2.5
05 E3 E2.5
E5 E3 E2.5
E5 E2.5 F2 E5 E25 F2
E5 E2.5 F2
Ea G25 G2
F5 G25 m F4 H2.5 H2
F4 H2.5 H2 rn H2.5 12
H3 H2.5 12
H3 12 K2
HJ 12 K2
H4 12.5 K2
I J4 12.5 K2 14 K2 NA
J4 K2 NA
.14 K2 NA
K4 K2 NA
K4 K2 NA
NOTE: Reinforcement is by erector
ROUND
4"
MINOR
AXIS
POUNDS EQUIVALENT PER FT.
-- ·-7.6 8.0
8.3 8.7
9.0
9.3
9.6 9.8
10.l
10.3
I0.6
10.8
11.0
11.2
1 1.5
l 1.7
11.9
12.0 12.2
12.4
12.6
12.9
13.3
I 13.6
13.9 14.2 14.5
14.7 15.0
15.3
15.5
15.8
16.0
16.2
16.5
16.7
3 .39 3.7J
4.07
4.41
4.75 5.09
5.43
5.77
7.43 7.85
8.26 8.68 9.09
9.50
9.92
10.33
10.75
I 11.16
11.57
Ll.99 12.40
13.23
16.55 17.52
18.50 19.47
20.45
21.42
22.40
31.04 32.33
33.62
34.92
36.21
37.51 38.80
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
6"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
14
15
17
19
20
22
23
25
26
28
30
31
33
34
36
37
39
41
42
44
47
50
53
56
59
63
66
69
72
75
78
81
85
88
91
POUNDS
PER FT.
3.73
4.07
4.41
4.75
5.09
5.43
5.77
7.43
7.85
8.26
8.68
9.09
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
16.55
17.52
18.50
19.47
20.45
21.42
22.40
31.04
32.33
33.62
34.92
36.21
37.51
38.80
ROUND
EQUIVALENT
9.5
10.0
10.5
10.9
11.4
11.8
12.1
12.5
12.8
13.1
13.5
13.8
14.0
14.3
14.6
14.9
15.1
15.4
15.6
15.9
16.3
16.8
17.2
17.6
18.0
18.3
18.7
19.1
19.4
19.7
20.1
20.4
20.7
21.0
21.3
+10"
A5
A4
A4
A3
A3
B3
B3
B3
B3
C3
C3
D3
D3
D3
D3
E2.5
E2.5
E2.5
E2.5
F2
F2
G2
G2
H2
H2
I2
I2
K2
K2
K2
K2
NA
NA
NA
NA
+6"
NR
A5
A5
A4
A4
A4
B4
B5
B5
C5
C5
C4
D4
D4
D4
E3
E3
E3
E3
E2.5
E2.5
G2.5
G2.5
H2.5
H2.5
H2.5
H2.5
I2.5
J2.5
J2.5
J2.5
K2
K2
K2
K2
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
A8
A8
A8
A8
B8
B8
B8
C8
C8
C5
C5
C5
D5
D5
D5
D5
E5
E5
F5
F5
F4
F4
G4
G4
H3
H4
H4
H4
J4
J4
J4
J4
GAGE
24
24
24
24
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
ACTUAL
MAJOR
AXIS
13.9
15.4
17.0
18.6
20.1
21.7
23.3
24.8
26.4
28.0
29.6
31.1
32.7
34.3
35.8
37.4
39.0
40.6
42.1
43.7
46.8
50.0
53.1
56.3
59.4
62.5
65.7
68.8
72.0
75.1
78.3
81.4
84.5
87.7
90.8
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
8"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
14
16
17
19
21
22
24
25
27
28
30
32
33
35
36
38
39
41
43
46
49
52
55
58
61
65
68
71
74
77
80
83
87
90
POUNDS
PER FT.
4.07
4.41
4.75
5.09
5.43
5.77
6.11
7.85
8.26
8.68
9.09
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
16.55
17.52
18.50
19.47
20.45
21.42
22.40
31.04
32.33
33.62
34.92
36.21
37.51
38.80
ROUND
EQUIVALENT
11.2
11.8
12.3
12.9
13.4
13.9
14.3
14.7
15.1
15.5
15.9
16.3
16.6
17.0
17.3
17.6
17.9
18.2
18.5
19.1
19.7
20.2
20.7
21.1
21.6
22.1
22.5
22.9
23.3
23.7
24.1
24.5
24.8
25.2
+10"
A5
A5
A4
A4
A3
A3
B3
B3
B3
B3
C3
C3
D3
D3
D3
D3
E2.5
E2.5
E2.5
F2
G2.5
G2
G2
H2
H2
I2
I2
K2
K2
K2
K2
NA
NA
NA
+6"
NR
NR
A5
A5
A4
A4
A4
B5
B5
B5
C5
C5
C4
D4
D4
D4
E3
E3
E3
E2.5
F3
G2.5
G2.5
H2.5
H2.5
H2.5
H2.5
J2.5
J2.5
J2.5
J2.5
K2
K2
K2
GAGE
24
24
24
24
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
A8
A8
A8
A10
B8
B8
B8
C8
C8
C5
C5
C5
D5
D5
D5
E5
E5
F5
F5
F4
F4
G4
G4
H4
H4
H4
H4
J4
J4
J4
ACTUAL
MAJOR
AXIS
14.3
15.9
17.4
19.0
20.6
22.1
23.7
25.3
26.8
28.4
30.0
31.6
33.1
34.7
36.3
37.8
39.4
41.0
42.6
45.7
48.8
52.0
55.1
58.3
61.4
64.5
67.7
70.8
74.0
77.1
80.3
83.4
86.5
89.7
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
10"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
16
18
19
21
23
24
26
27
29
30
32
34
35
37
38
40
41
45
48
51
54
57
60
63
67
70
73
76
79
82
85
89
92
POUNDS
PER FT.
4.75
5.09
5.43
5.77
6.11
6.45
8.26
8.68
9.09
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
17.52
18.50
19.47
20.45
21.42
22.40
23.37
32.33
33.62
34.92
36.21
37.51
38.80
40.09
ROUND
EQUIVALENT
13.3
14.0
14.6
15.2
15.7
16.2
16.7
17.2
17.7
18.1
18.5
18.9
19.3
19.7
20.1
20.4
20.8
21.5
22.1
22.7
23.3
23.9
24.4
25.0
25.5
26.0
26.4
26.9
27.3
27.8
28.2
28.6
29.0
+10"
A5
A5
A4
A4
A3
A3
B4
B4
B3
B3
C3
C3
D3
D3
D3
D3
E2.5
E2.5
F2
G2.5
G2
G2
H2
H2
I2
I2
K2
K2
K2
K2
NA
NA
NA
+6"
NR
NR
A5
A5
A4
A4
A5
B5
B5
B5
C5
C5
C4
D4
D4
D4
E3
E3
E2.5
F3
G2.5
G2.5
H2.5
H2.5
H2.5
H2.5
J2.5
J2.5
J2.5
J2.5
K2
K2
K2
GAGE
24
24
24
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
A8
A8
A10
A10
B8
B8
B8
C8
C8
C5
C5
C5
D5
D5
E5
E5
F5
F5
F4
F4
G4
G4
H4
H4
H4
H4
J4
J4
J4
ACTUAL
MAJOR
AXIS
16.3
17.9
19.4
21.0
22.6
24.1
25.7
27.3
28.8
30.4
32.0
33.6
35.1
36.7
38.3
39.8
41.4
44.6
47.7
50.8
54.0
57.1
60.3
63.4
66.5
69.7
72.8
76.0
79.1
82.3
85.4
88.5
91.7
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
12"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
POUNDS
PER FT.
5.09
5.43
5.77
6.11
6.45
8.26
8.68
9.09
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
17.52
18.50
19.47
20.45
21.42
22.40
23.37
32.33
33.62
34.92
36.21
37.51
38.80
40.09
ROUND
EQUIVALENT
14.6
15.4
16.1
16.7
17.4
18.0
18.5
19.1
19.6
20.1
20.6
21.0
21.5
21.9
22.3
22.7
23.5
24.3
25.0
25.6
26.3
26.9
27.5
28.1
28.7
29.2
29.7
30.3
30.8
31.2
31.7
32.2
+10"
A5
A5
A5
A4
A4
A4
A4
B4
B4
B3
B3
C3
C3
D3
D3
D3
E2.5
E2.5
G2.5
G2.5
G2
G2
H2
H2
I2
I2.5
K2
K2
K2
K2
NA
NA
+6"
NR
NR
NR
A5
A5
A5
A5
A5
B5
B5
B5
C5
C5
C4
D4
D4
E3
E3
F3
F3
G2.5
G2.5
H2.5
H2.5
H2.5
H3
J2.5
J2.5
J2.5
K2
K2
K2
GAGE
24
24
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
A10
A10
B8
B8
B8
C8
C8
C5
C5
D5
D5
E5
E5
F5
F5
F4
F4
G4
H5
H4
H4
H4
J4
J4
J4
ACTUAL
MAJOR
AXIS
16.7
18.3
19.9
21.4
23.0
24.6
26.1
27.7
29.3
30.8
32.4
34.0
35.6
37.1
38.7
40.3
43.4
46.6
49.7
52.8
56.0
59.1
62.3
65.4
68.5
71.7
74.8
78.0
81.1
84.3
87.4
90.5
NOMINAL
MAJOR
AXIS
17
18
20
21
23
25
26
28
29
31
32
34
36
37
39
40
43
47
50
53
56
59
62
65
69
72
75
78
81
84
87
91
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
14"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
19
20
22
23
25
27
28
30
31
33
34
36
38
39
42
45
49
52
55
58
61
64
67
71
74
77
80
83
86
89
93
POUNDS
PER FT.
5.77
6.11
6.45
6.79
8.68
9.09
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
17.52
18.50
19.47
20.45
21.42
22.40
23.37
32.33
33.62
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
16.7
17.5
18.2
18.9
19.5
20.2
20.8
21.3
21.9
22.4
22.9
23.4
23.9
24.4
25.3
26.1
26.9
27.7
28.4
29.1
29.8
30.5
31.1
31.7
32.3
32.9
33.4
34.0
34.5
35.0
35.5
+10"
A5
A5
A5
A5
A5
A4
A4
B4
B4
B3
B3
C3
C3
D3
D3
E2.5
F3
G2.5
G2.5
G2
G2
H2
H2
I2.5
I2.5
K2
K2
K2
K2
NA
NA
+6"
NR
NR
NR
A5
A5
A5
A5
A5
B5
B5
B5
C5
C5
C4
D4
E3
E4
F3
F3
G2.5
G2.5
H2.5
H2.5
H3
H3
J2.5
J2.5
J2.5
K2
K2
K2
GAGE
24
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
A10
A10
B8
B8
B8
C8
C8
D5
D5
D5
E5
E5
F5
F5
F4
F4
H5
H5
H4
H4
H4
J4
J4
J4
ACTUAL
MAJOR
AXIS
18.7
20.3
21.9
23.4
25.0
26.6
28.1
29.7
31.3
32.8
34.4
36.0
37.6
39.1
42.3
45.4
48.6
51.7
54.8
58.0
61.1
64.3
67.4
70.5
73.7
76.8
80.0
83.1
86.3
89.4
92.5
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
16"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
21
22
24
25
27
29
30
32
33
35
36
38
41
44
47
51
54
57
60
63
66
69
73
76
79
82
85
88
91
POUNDS
PER FT.
6.45
6.79
7.13
9.09
8.68
9.92
9.50
10.75
11.16
11.57
11.99
12.40
13.23
14.06
14.89
18.50
19.47
20.45
21.42
22.40
23.37
24.35
33.62
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
18.7
19.5
20.3
21.0
21.7
22.3
22.9
23.6
24.1
24.7
25.2
25.8
26.8
27.7
28.6
29.5
30.3
31.1
31.8
32.6
33.3
34.0
34.6
35.3
35.9
36.5
37.1
37.7
38.2
+10"
A5
A5
A5
A5
A5
A4
A4
B4
B4
B3
B3
C3
D3
D3
E2.5
F3
G2.5
G2.5
G2
G2
H2
H2
I2.5
I2.5
K2
K2
K2
K2
NA
+6"
NR
NR
NR
A5
A5
A5
A5
A5
B5
B5
B5
C5
C4
D4
E3
E4
F3
F3
G2.5
G2.5
H2.5
H2.5
H3
H3
J2.5
J2.5
K2
K2
K2
GAGE
24
24
24
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
A10
A10
B8
B8
B8
C8
C5
D5
D5
E5
E5
F5
F5
F4
F4
H5
H5
H4
H4
J4
J4
J4
ACTUAL
MAJOR
AXIS
20.7
22.3
23.9
25.4
27.0
28.6
30.1
31.7
33.3
34.8
36.4
38.0
41.1
44.3
47.4
50.6
53.7
56.8
60.0
63.1
66.3
69.4
72.5
75.7
78.8
82.0
85.1
88.3
91.4
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
18"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
21
23
24
26
27
29
31
32
34
35
37
40
43
46
49
53
56
59
62
65
68
71
75
78
81
84
87
90
POUNDS
PER FT.
6.79
7.13
7.47
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
14.89
18.50
19.47
20.45
21.42
22.40
23.37
24.35
33.62
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
19.9
20.8
21.6
22.3
23.1
23.8
24.5
25.1
25.7
26.3
26.9
28.1
29.1
30.1
31.1
32.0
32.8
33.7
34.5
35.3
36.0
36.7
37.4
38.1
38.8
39.4
40.1
40.7
+10"
A5
A5
A5
A5
A5
A5
A4
A4
B4
B4
B3
C3
D3
D3
F3
F3
G2.5
G2.5
G2
G2
H2
H2.5
I2.5
I2.5
K2
K2
K2
K2
+6"
NR
NR
NR
NR
A5
A5
A5
A5
A5
B5
B5
C5
C4
D4
E4
E4
F3
F3
G2.5
G2.5
H2.5
H3
H3
H3
J2.5
J2.5
K2
K2
GAGE
24
24
24
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
NR
A10
A10
B8
B8
C8
C5
D5
D5
E5
E5
F5
F5
F4
G5
H5
H5
H4
H4
J4
J4
ACTUAL
MAJOR
AXIS
21.1
22.7
24.3
25.9
27.4
29.0
30.6
32.1
33.7
35.3
36.8
40.0
43.1
46.3
49.4
52.6
55.7
58.8
62.0
65.1
68.3
71.4
74.5
77.7
80.8
84.0
87.1
90.3
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
20"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
23
25
26
28
29
31
33
34
36
39
42
45
48
51
55
58
61
64
67
70
73
77
80
83
86
89
POUNDS
PER FT.
7.47
9.50
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
14.89
15.71
19.47
20.45
21.42
22.40
23.37
24.35
25.32
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
21.9
22.8
23.6
24.4
25.2
25.9
26.6
27.3
27.9
29.1
30.3
31.4
32.5
33.5
34.4
35.3
36.2
37.1
37.9
38.7
39.4
40.2
40.9
41.6
42.3
43.0
+10"
A5
A5
A5
A5
A5
A5
A4
A4
B4
B3
C3
D3
D3
F3
F3
G2.5
G2.5
G2
G2
H2
H2.5
I2.5
I2.5
K2
K2
K2
+6"
NR
NR
NR
NR
A5
A5
A5
A5
A5
B5
C5
C4
D4
E4
E4
F3
F3
G2.5
G2.5
H2.5
H3
H3
J2.5
J2.5
K2
K2
GAGE
24
22
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
NR
A10
B8
B8
C8
C5
D5
D5
E5
E5
F5
F5
F4
G5
H5
H4
H4
J4
J4
ACTUAL
MAJOR
AXIS
23.1
24.7
26.3
27.9
29.4
31.0
32.6
34.1
35.7
38.8
42.0
45.1
48.3
51.4
54.6
57.7
60.8
64.0
67.1
70.3
73.4
76.5
79.7
82.8
86.0
89.1
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
22"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
25
27
28
30
31
33
35
38
41
44
47
50
53
57
60
63
66
69
72
75
79
82
85
88
POUNDS
PER FT.
9.92
10.33
10.75
11.16
11.57
11.99
12.40
13.23
14.06
14.89
15.71
19.47
20.45
21.42
22.40
23.37
24.35
25.32
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
23.9
24.8
25.6
26.4
27.2
28.0
28.7
30.0
31.3
32.5
33.7
34.8
35.8
36.8
37.8
38.7
39.6
40.4
41.3
42.1
42.8
43.6
44.3
45.1
+10"
NR
NR
NR
NR
A5
A5
A4
B4
B3
C3
D3
D4
F3
F3
G2.5
G2.5
G2
G2
H2.5
H2.5
I2.5
I2.5
K2
K2
+6"
NR
NR
NR
NR
A5
A5
A5
A5
B5
C5
C4
D4
E4
E4
F3
F3
G2.5
G2.5
H3
H3
H3
H3
J2.5
J2.5
GAGE
22
22
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
NR
A10
B8
B8
C8
C8
D5
D5
E5
E5
F5
F5
G5
G5
H5
H5
H4
H4
ACTUAL
MAJOR
AXIS
25.1
26.7
28.3
29.9
31.4
33.0
34.6
37.7
40.8
44.0
47.1
50.3
53.4
56.6
59.7
62.8
66.0
69.1
72.3
75.4
78.5
81.7
84.8
88.0
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
24"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
POUNDS
PER FT.
10.75
11.16
11.57
11.99
12.40
13.23
14.06
14.89
15.71
19.47
20.45
21.42
22.40
23.37
24.35
25.32
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
25.9
26.8
27.7
28.5
29.3
30.8
32.2
33.5
34.7
35.9
37.0
38.1
39.2
40.1
41.1
42.0
42.9
43.8
44.6
45.4
46.2
47.0
+10"
NR
NR
NR
NR
A5
A4
B4
B3
C3
D4
D4
F3
F3
G2.5
G2.5
G2
H2.5
H2.5
H2.5
I2.5
K2
K2
+6"
NR
NR
NR
NR
A5
A5
A5
B5
C5
D5
D4
E4
E4
F3
F3
G2.5
H3
H3
H3
H3
J2.5
J2.5
GAGE
22
22
22
22
22
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
NR
NR
NR
NR
A10
B8
B8
C10
C8
D5
D5
E5
E5
F5
F5
G5
G5
H5
H4
H4
ACTUAL
MAJOR
AXIS
27.1
28.7
30.3
31.9
33.4
36.6
39.7
42.8
46.0
49.1
52.3
55.4
58.6
61.7
64.8
68.0
71.1
74.3
77.4
80.5
83.7
86.8
NOMINAL
MAJOR
AXIS
27
29
30
32
33
37
40
43
46
49
52
55
59
62
65
68
71
74
77
81
84
87
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
26"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
35
39
42
45
48
51
54
57
61
64
67
70
73
76
79
83
86
POUNDS
PER FT.
13.23
14.06
14.89
15.71
16.54
20.45
21.42
22.40
23.37
24.35
25.32
26.29
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
31.3
32.8
34.3
35.6
36.9
38.1
39.3
40.4
41.5
42.5
43.5
44.4
45.4
46.3
47.2
48.0
48.8
+10"
A5
A4
B4
B3
C3
D4
D4
F3
F3
G2.5
G2.5
G2
H2.5
H2.5
H2.5
I2.5
K2
+6"
A5
A5
A5
B5
C5
D5
D4
E4
E4
F3
F3
G2.5
G2.5
H3
H3
H3
J2.5
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
A10
B8
B8
C8
C8
D5
D5
E5
E5
F5
F5
G5
G5
H5
H4
ACTUAL
MAJOR
AXIS
35.4
38.6
41.7
44.8
48.0
51.1
54.3
57.4
60.6
63.7
66.8
70.0
73.1
76.4
79.4
82.5
85.7
GAGE
22
22
22
22
20
20
20
20
20
20
20
20
18
18
18
18
18
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
28"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
37
41
44
47
50
53
56
59
63
66
69
72
75
78
81
85
POUNDS
PER FT.
14.06
14.89
15.71
16.54
20.45
21.42
22.40
23.37
24.35
25.32
26.29
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
33.4
34.9
36.4
37.8
39.1
40.3
41.5
42.7
43.8
44.8
45.8
46.8
47.8
48.7
49.6
50.5
+10"
A5
A5
B5
C4
C4
D4
D4
F3
F3
G2.5
G3
H3
H3
I3
I3
J3
+6"
A5
A5
A5
B5
C5
D5
D4
E4
E4
F3
F3
H4
H4
I4
I4
J4
GAGE
22
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
A10
B8
B8
C8
C8
D5
D5
E5
E5
F5
F5
G5
G5
H5
ACTUAL
MAJOR
AXIS
37.4
40.6
43.7
46.8
50.0
53.1
56.3
59.4
62.6
65.7
68.8
72.0
75.1
78.3
81.4
84.5
SHOP STANDARDS
FLAT OVAL DUCT CONSTRUCTION TABLE
(NOT FOR ALUMINUM)
30"MINOR
AXIS
MAJOR AXIS
MINOR
AXIS
NOTE: Reinforcement is by erector
NOMINAL
MAJOR
AXIS
39
43
46
49
52
55
58
61
65
68
71
74
77
80
83
POUNDS
PER FT.
14.89
15.71
16.54
20.45
21.42
22.40
23.37
24.35
25.32
34.92
36.21
37.51
38.80
40.09
41.39
ROUND
EQUIVALENT
35.4
37.0
38.5
39.9
41.2
42.5
43.7
44.9
46.0
47.1
48.2
49.2
50.2
51.1
52.1
+6"
A5
A5
A5
B5
C5
D5
D5
E4
E4
F3
G4
H4
H4
H3
H3
REINFORCEMENT PER STATIC PRESSURE
+2"
NR
NR
A10
B10
B10
C10
C8
D5
D5
E5
E5
F5
F5
G5
G5
+10"
A5
A5
B5
C4
C4
D4
D4
F3
F3
F3
G3
H3
H3
H2.5
H2.5
GAGE
22
22
22
20
20
20
20
20
20
20
18
18
18
18
18
ACTUAL
MAJOR
AXIS
39.4
42.6
45.7
48.8
52.0
55.1
58.3
61.4
64.6
67.7
70.8
74.0
77.1
80.3
83.4
OR - REDUCER
OS - COUPLING
OSET - OFFSET
ODSA - SPUN INSULATION END
OT - TEE
OL - LATERAL
OEC - END CAP
LEGEND
OAR - ANGLE RING
OBM - BELLMOUTH
OCMB - COMBINATION
OT2 - CROSS
OC - CONICAL
OTST - SADDLE TAP
OE - ELBOW
OF - FLAT SADDLE
DIMENSIONING CODEA
B
C,D
P
R
S
Z
EB
HB
- Size of main inlet major axis, a- minor axis
- Size of main outlet, if reducing major axis, b-monor asis
- Size of take off taps major asix, c, d-monor axis
- Angle Between Cross Tap Centerlines
- Radius
- Length of Male End of Fittings
- Offset Height
- Easy bend for vertical elbows
- Hard bend for horizontal elbows
- A, a, B, b
- A, a, B, b, C, c, D, d
- A, a, B, b, C, c, D, d
- A, a, B, b, C, c, D, d
- As Noted
ORDERING
Specify type of fittings and list
the following diemensions:
ELBOWS
TEES
LATERALS
CROSSES
ACCESSORIES
The drawings shown are illustrative of the types fabricated.
All fittings, unless noted, are fabricated as a male part
on each end for slip-joint assembly with spiral pipe.
Van Stone angle ring, Solid welded flange, Accuflange or Ovalmate flanges are available
on special order.
OVAL SINGLE WALL FITTINGS
