1/2" W.G Static, + ,-
|
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| |
|
|
|
|
|
|
|
|
| 10"dn. |
|
|
|
|
|
|
|
|
| 11,12" |
|
|
|
|
|
|
|
|
| 13,14" |
|
|
|
|
|
|
|
|
| 15,16" |
|
A-26 |
|
|
|
|
|
|
| 17,18" |
26 ga. |
A-26 |
|
|
|
|
|
|
| 19,20" |
24 ga. |
A-26 |
|
|
|
|
|
|
| 21,22" |
22 ga. |
A-26 |
|
|
|
|
|
|
| 23,24" |
22 ga. |
A-26 |
|
|
|
|
|
|
| 25,26" |
20 ga. |
A-26 |
|
|
|
|
|
|
| 27,28" |
18 ga. |
B-24 |
B-26 |
|
|
|
|
|
| 29,30" |
18 ga. |
B-24 |
B-26 |
|
|
|
|
|
| 31-36" |
16 ga. |
C-22 |
C-24 |
C-26 |
|
|
|
|
| 37-42" |
|
D-20 |
D-24 |
D-26 |
C-26 |
|
|
|
| 43-48" |
|
E-20 |
D-22 |
D-26 |
|
|
|
|
| 49-54" |
|
E-18 |
E-20 |
D-26 |
|
|
|
|
| 55-60" |
|
F-18 |
F-20 |
E-24 |
E-26 |
|
|
|
| 61-72" |
|
H-16 F+rod |
G-18 F+rod |
F-22 |
F-24 |
|
|
|
| 73-84" |
|
|
H-16 F+rod |
H-22 F+rod |
G-24 F+rod |
|
|
|
| 85-96" |
|
|
I-16 F+rod |
H-20 F+rod |
H-22 F+rod |
|
|
|
| 97"- |
|
|
|
H-18t |
|
1" W.G Static, + ,- |
|
| Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
|
|
|
|
|
|
|
|
|
| 10" dn. |
|
|
|
|
|
|
|
|
| 11,12" |
26 ga. |
|
|
|
|
|
|
|
| 13,14" |
24 ga. |
A-26 |
|
| 15,16" |
22 ga. |
A-24 |
A-26 |
|
| 17,18" |
22 ga. |
A-24 |
A-26 |
|
| 19,20" |
20 ga. |
A-24 |
A-26 |
|
| 21,22" |
18 ga. |
A-24 |
|
A-26 |
|
| 23,24" |
18 ga. |
B-24 |
|
A-26 |
|
| 25,26" |
18 ga. |
B-22 |
B-24 |
A-26 |
|
| 27,28" |
16 ga. |
C-22 |
C-24 |
B-26 |
|
| 29,30" |
16 ga. |
C-22 |
C-24 |
B-26 |
|
| 31-36" |
|
D-20 |
D-22 |
C-26 |
|
| 37-42" |
|
E-18 |
D-20 |
D-24 |
D-26 |
|
| 43-48" |
|
F-16 |
E-18 |
E-24 |
D-26 |
|
| 49-54" |
|
G-16 F+rod |
F-18 |
E-22 |
E-24 |
|
| 55-60" |
|
|
G-18 F+rod |
F-22 |
F-24 |
|
| 61-72" |
|
|
|
H-18 F+rod |
G-22 F+rod |
|
| 73-84" |
|
|
|
I-18 F+rod |
H-20 F+rod |
|
| 85-96" |
|
|
|
J-16 F+rod |
I-18 F+rod |
I-20 F+rod |
|
| 97"- |
|
|
|
|
|
|
H-18 F+rod |
|
2" W.G Static, + ,- |
| |
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| |
|
|
|
|
|
|
|
|
| 10"dn. |
26 ga. |
|
|
|
|
|
|
|
| 11,12" |
24 ga. |
|
A-26 |
|
|
|
|
|
| 13,14" |
22 ga. |
|
A-24 |
A-26 |
|
|
|
|
| 15,16" |
20 ga. |
A-22 |
A-24 |
A-26 |
|
|
|
|
| 17,18" |
20 ga. |
A-22 |
A-24 |
A-26 |
|
|
|
|
| 19,20" |
18 ga. |
B-20 |
B-22 |
A-26 |
|
|
|
|
| 21,22" |
18 ga. |
B-20 |
B-22 |
A-26 |
|
|
|
|
| 23,24" |
16 ga. |
C-20 |
C-22 |
B-26 |
|
|
|
|
| 25,26" |
16 ga. |
C-20 |
C-22 |
B-26 |
|
|
|
|
| 27,28" |
|
C-18 |
C-20 |
C-24 |
B-26 |
|
|
|
| 29,30" |
|
D-18 |
D-20 |
C-24 |
C-26 |
|
|
|
| 31-36" |
|
E-16 |
E-18 |
D-22 |
D-24 |
|
|
|
| 37-42" |
|
|
E-16 |
E-22 |
E-24 |
|
|
|
| 43-48" |
|
|
G-16 |
F-20 |
E-22 |
E-24 |
|
|
| 49-54" |
|
|
|
G-18F+rod |
F-20 |
F-24 |
|
|
| 55-60" |
|
|
|
H-18F+rod |
G-20 F+rod |
G-20 F+rod |
|
|
| 61-72" |
|
|
|
I-16 F+rod |
H-18F+rod |
H-20 F+rod |
|
|
| 73-84" |
|
|
|
|
J-18 F+rod |
J-18 F+rod |
|
|
| 85-96" |
|
|
|
|
K-16 G+rod |
K-18 G+rod |
J-20 G+rod |
|
| 97"- |
|
|
|
|
|
|
H-18t |
|
3" W.G Static, + ,- |
| |
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| |
|
|
|
|
|
|
|
|
| 10"dn. |
24 ga. |
|
|
|
|
|
|
|
| 11,12" |
22 ga. |
|
A-24 |
A-24 |
|
|
|
|
| 13,14" |
20 ga. |
|
A-22 |
A-24 |
|
|
|
|
| 15,16" |
18 ga. |
|
A-22 |
A-24 |
|
|
|
|
| 17,18" |
18 ga. |
|
B-22 |
A-24 |
|
|
|
|
| 19,20" |
16 ga. |
B-18 |
B-20 |
B-24 |
|
|
|
|
| 21,22" |
16 ga. |
C-18 |
B-20 |
B-24 |
|
|
|
|
| 23,24" |
16 ga. |
C-18 |
C-18 |
C-22 |
C-24 |
|
|
|
| 25,26" |
|
D-18 |
D-18 |
C-22 |
C-24 |
C-24 |
|
|
| 27,28" |
|
D-18 |
D-18 |
D-22 |
D-24 |
C-24 |
|
|
| 29,30" |
|
D-16 |
D-18 |
D-22 |
D-24 |
C-24 |
|
|
| 31-36" |
|
|
E-16 |
E-20 |
E-22 |
D-24 |
|
|
| 37-42" |
|
|
|
F-18 |
F-20 |
E-22 |
E-24 |
|
| 43-48" |
|
|
|
G-18 |
G-18 |
F-20 |
F-22 |
|
| 49-54" |
|
|
|
H-16F+rod |
H-18F+rod |
H-18 |
G-22 F+rod |
|
| 55-60" |
|
|
|
I-16 F+rod |
I-16 F+rod |
H-20 F+rod |
H-22 F+rod |
G-24 F+rod |
| 61-72" |
|
|
|
|
|
I-18 F+rod |
I-20 F+rod |
H-22 F+rod |
| 73-84" |
|
|
|
|
|
K-16 G+rod |
J-18 F+rod |
J-20 F+rod |
| 85-96" |
|
|
|
|
|
|
L-16 G+rod |
K-20 G+rod |
| 97"- |
|
|
|
|
|
|
H-18t |
H-18t |
|
4" W.G Static, + ,
|
| |
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| 8" dn. |
24 ga. |
|
|
|
|
|
|
|
| 9,10" |
22 ga. |
|
|
A-24 |
|
|
|
|
| 11,12" |
20 ga. |
A-22 |
A-22 |
A-24 |
|
|
|
|
| 13,14" |
18 ga. |
A-20 |
A-22 |
A-24 |
|
|
|
|
| 15,16" |
18 ga. |
A-20 |
A-20 |
A-24 |
|
|
|
|
| 17,18" |
16 ga. |
B-18 |
B-20 |
A-24 |
|
|
|
|
| 19,20" |
|
C-18 |
C-20 |
B-24 |
|
|
|
|
| 21,22" |
|
C-18 |
C-18 |
B-24 |
|
|
|
|
| 23,24" |
|
D-18 |
D-18 |
C-22 |
C-24 |
|
|
|
| 25,26" |
|
D-18 |
D-18 |
C-22 |
C-24 |
C-24 |
|
|
| 27,28" |
|
E-16 |
E-18 |
D-22 |
D-24 |
C-24 |
|
|
| 29,30" |
|
E-16 |
E-18 |
D-22 |
D-24 |
C-24 |
|
|
| 31-36" |
|
|
|
E-20 |
E-22 |
D-24 |
|
|
| 37-42" |
|
|
|
F-18 |
F-20 |
E-22 |
E-24 |
|
| 43-48" |
|
|
|
G-18 |
G-18 |
F-20 |
F-22 |
|
| 49-54" |
|
|
|
H-16F+rod |
H-18F+rod |
H-18 |
G-22 F+rod |
|
| 55-60" |
|
|
|
I-16 F+rod |
I-16 F+rod |
H-20 F+rod |
H-22 F+rod |
G-24 F+rod |
| 61-72" |
|
|
|
|
|
I-18 F+rod |
I-20 F+rod |
H-22 F+rod |
| 73-84" |
|
|
|
|
|
K-16 G+rod |
J-18 F+rod |
J-20 F+rod |
| 85-96" |
|
|
|
|
|
|
L-16 G+rod |
K-20 G+rod |
| 97"- |
|
|
|
|
|
|
H-18t |
H-18t |
|
6" W.G Static, + ,- |
| |
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| 8" dn. |
24 ga. |
|
|
|
|
|
|
|
| 9,10" |
20 ga. |
|
|
|
|
|
|
|
| 11,12" |
18 ga. |
|
|
A-24 |
|
|
|
|
| 13,14" |
18 ga. |
A-20 |
A-20 |
A-24 |
|
|
|
|
| 15,16" |
16 ga. |
A-20 |
A-20 |
A-22 |
A-24 |
|
|
|
| 17,18" |
|
B-18 |
B-18 |
A-22 |
A-24 |
|
|
|
| 19,20" |
|
C-18 |
C-18 |
B-22 |
B-24 |
|
|
|
| 21,22" |
|
C-16 |
C-18 |
B-22 |
B-24 |
|
|
|
| 23,24" |
|
D-16 |
C-18 |
C-22 |
C-24 |
|
|
|
| 25,26" |
|
|
D-18 |
C-22 |
C-22 |
C-24 |
|
|
| 27,28" |
|
|
D-16 |
D-20 |
C-22 |
C-24 |
|
|
| 29,30" |
|
|
E-16 |
D-20 |
D-22 |
C-24 |
|
|
| 31-36" |
|
|
|
D-18 |
D-22 |
D-24 |
|
|
| 37-42" |
|
|
|
F-18 |
E-20 |
E-22 |
E-24 |
|
| 43-48" |
|
|
|
G-16 |
G-18 |
F-20 |
F-22 |
|
| 49-54" |
|
|
|
|
H-18 |
H-18 |
G-22 |
|
| 55-60" |
|
|
|
|
H-16F+rod |
H-18 F+rod |
H-20 F+rod |
G-22 F+rod |
| 61-72" |
|
|
|
|
|
H-18 F+rod |
H-20 F+rod |
H-22 F+rod |
| 73-84" |
|
|
|
|
|
J-16 F+rod |
J-18 F+rod |
I-20 F+rod |
| 85-96" |
|
|
|
|
|
|
L-16 G+rod |
K-18 G+rod |
| 97"- |
|
|
|
|
|
|
|
L-18 G+rod |
|
|
|
|
|
|
|
|
H-18t |
|
10" W.G Static, + ,- |
| |
Duct Dimension |
No Reinforcement Duct Gage |
|
Minimum Rigidity Class On Minimum Gage Duct Reinforcement Spacing |
|
| |
|
10' |
8' |
5' |
4' |
3' |
2 1/2' |
2" |
| 8" dn. |
22 |
|
|
A-24 |
|
|
|
|
| 9,10" |
18 |
|
|
A-22 |
A-24 |
|
|
|
| 11,12" |
16 |
|
A-18 |
A-22 |
A-24 |
|
|
|
| 13,14" |
|
|
B-18 |
A-20 |
A-22 |
A-24 |
|
|
| 15,16" |
|
|
B-16 |
B-20 |
B-22 |
B-24 |
|
|
| 17,18" |
|
|
C-16 |
C-20 |
B-22 |
B-24 |
|
|
| 19,20" |
|
|
D-16 |
C-18 |
C-20 |
B-24 |
|
|
| 21,22" |
|
|
|
C-18 |
C-20 |
C-24 |
|
|
| 23,24" |
|
|
|
D-18 |
D-20 |
C-24 |
|
|
| 25,26" |
|
|
|
D-18 |
D-20 |
D-22 |
C-24 |
|
| 27,28" |
|
|
|
E-18 |
D-20 |
D-22 |
D-24 |
|
| 29,30" |
|
|
|
E-16 |
E-18 |
D-22 |
D-24 |
|
| 31-36" |
|
|
|
F-16 |
F-18 |
F-20 |
E-22 |
E-24 |
| 37-42" |
|
|
|
|
H-16 |
G-18 |
G-20 |
F-22 |
| 43-48" |
|
|
|
|
|
H-18 |
H-18 |
G-22 |
| 49-54" |
|
|
|
|
|
F+rod I-16 |
F+rod H-18 |
F+rod H-20 |
| 55-60" |
|
|
|
|
|
F+rod J-16 |
F+rod I-18 |
F+rod I-20 |
| 61-72" |
|
|
|
|
|
|
G+rod K-16 |
G+rod K-18 |
| 73-84" |
|
|
|
|
|
|
|
H-16 |
| 85-96" |
|
|
|
|
|
|
|
H-16t |
| 97"- |
|
|
|
|
|
|
|
H-16t |
|