SEK RIB PROFILE
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| MATERIAL |
WT/SQ PLAIN |
RECOMMENDED ROOF LEAD SPAN TABLES
IN POUNDS PER SQ. FT. / 3 SPAN |
FINISH |
| 4'-0" |
4'-6" |
5'-0" |
5'-6" |
6'-0" |
6'-6" |
7'-0" |
7'-6" |
8'-0" |
8'-6" |
9'-0" |
| ALUMINUM |
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SMOOTH
MILL FINISH
STUCCO EMBOSSED PAINTED |
| 0.032 |
54.5 lbs |
70 |
55 |
45 |
37 |
31 |
26 |
20 |
17 |
15 |
13 |
12 |
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| GALVANIZED STEEL |
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GALV.
BRIGHT
SPANGLE
SILICONE
POLYESTER
COATED
KYNAR |
| 26 guage |
95.0 lbs |
70 |
55 |
45 |
37 |
30 |
25 |
19 |
16 |
14 |
12 |
11 |
| 24 guage |
120.0 lbs |
90 |
70 |
58 |
47 |
40 |
34 |
25 |
21 |
19 |
16 |
15 |
| 22 guage |
168.0 lbs |
118 |
92 |
76 |
62 |
53 |
45 |
34 |
29 |
26 |
23 |
20 |
| 20 guage |
200.0 lbs |
137 |
107 |
88 |
72 |
61 |
51 |
40 |
35 |
30 |
27 |
24 |
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| ALUMINIZED STEEL |
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UNIFORM
METALLIC
MATTE GRAY |
| 24 guage |
112.5 lbs |
79 |
62 |
51 |
42 |
35 |
30 |
22 |
19 |
16 |
14 |
13 |
| 22 guage |
157.4 lbs |
103 |
81 |
67 |
55 |
46 |
39 |
30 |
26 |
23 |
20 |
18 |
| 20 guage |
187.4 lbs |
120 |
94 |
77 |
63 |
53 |
45 |
35 |
30 |
26 |
23 |
21 |
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| NOTES |
1. Allowable loads shown are based on stress governing per latest A.I.S.I specification.
2. Allowable loads shown may be increased by 1/3 for wind loading.
3. Applications of this product on roofs with a pitch of less than 12° are not recommended.
4. 24 GA Steel and 0.032" Aluminum are not recommended for roofing applications. |
