| TABLE
VIII |
| Roof
Span Table for StrucJoist Sloped 8/12 and Less |
| |
Live
Load (psf) |
Dead
Load (psf) |
SJ
-15 |
SJ
-25 |
SJ-35 |
| 9-1/2"
|
11-7/8"
|
9-/2"
|
11-7/8"
|
14"
|
16"
|
11-7/8"
|
14"
|
16"
|
| 12"
O.C. |
NON
SNOW 125% |
20
|
10 |
24'-
7" |
29'-
7" |
25'-10" |
31'-0" |
35'-
5" |
39'-
5" |
33'-
9" |
38'-
5" |
42'-
9" |
| 20 |
15
|
23'-
0" |
27'-
8" |
24'-
2" |
29'-
0" |
33'-
2" |
36'-11" |
31'-
7" |
36'-
0" |
40'-
0" |
| 20
|
20
|
21'-10" |
26'-
2" |
22'-11" |
27'-
5" |
31'-
4" |
34'-11" |
29'-11"
|
34'-1"
|
37'-10"
|
| SNOW
115% |
25 |
10 |
22'-
5" |
26'-11" |
23'-
6" |
28'-
2" |
32'-
2" |
35'-10" |
30'-
8" |
35'-
0" |
38'-10"
|
| 25
|
15 |
21'-
3" |
25'-7"
|
22'-
4" |
26'-
9" |
30'-
7" |
34'-1"
|
29'-
2" |
33'-
3" |
36'-11" |
| 30 |
10 |
21'-
5" |
25'-
9" |
22'-
6" |
27'-
0" |
30'-10" |
34'-
4" |
29'-
5" |
33'-
6" |
37'-
3" |
| 30
|
15
|
20'-
6" |
24'-
7" |
21'-
6" |
25'-10"
|
29'-
6" |
32'-10" |
28'-1"
|
32'-
0" |
35'-
7" |
| 40
|
10
|
19'-
9" |
23'-
9" |
20'-
9" |
24'-11"
|
28'-
5" |
31'-
8" |
27'-1"
|
30'-10"
|
34'-
4" |
| 40
|
15 |
19'-
2" |
23'-1" |
20'-
2" |
24'-
2" |
27'-
7" |
30'-
9" |
26'-
4" |
30'-
0" |
33'-
4" |
| 50
|
15
|
18'-
2" |
21'-10"
|
19'-1"
|
22'-11" |
26'-
2" |
29'-1" |
24'-11"
|
28'-
5" |
31'-7"
|
| 16"
O.C. |
NON
SNOW 125% |
20 |
10 |
22'-
4" |
26'-10" |
23'-
5" |
28'-1" |
32'-1" |
35'-
9" |
30'-
7" |
34'-10" |
38'-
9" |
| 20 |
15 |
20'-11" |
25'-1" |
21'-11" |
26'-
4" |
30'-
0" |
33'-
5" |
28'-
8" |
32'-
7" |
36'-
3" |
| 20 |
20 |
19'-
9" |
23'-
9" |
20'-
9" |
24'-11" |
28'-
5" |
31'-
8" |
27'-1" |
30'-10" |
34'-
3" |
| SNOW
115% |
25 |
10 |
20'-
3" |
24'-
5" |
21'-4" |
25'-
7" |
29'-
2" |
32'-
6" |
27'-10" |
31'-8" |
35'-
3" |
| 25 |
15
|
19'-
3" |
23'-
2" |
20'-
3" |
24'-
3" |
27'-
9" |
30'-10"
|
26'-
5" |
30'-1"
|
33'-
5" |
| 30
|
10
|
19'-
5" |
23'-
4" |
20'-
5" |
24'-6"
|
27'-11" |
31'-1"
|
26'-
8" |
30'-
4" |
33'-
9" |
| 30
|
15
|
18'-
7" |
22'-
4" |
19'-
6" |
23'-
4" |
26'-
8" |
29'-
9" |
25'-
5" |
29'-
0" |
32'-
3" |
| 40
|
10 |
17'-11" |
21'-
6" |
18'-10"
|
22'-
7" |
25'-
9" |
28'-
8" |
24'-
6" |
28'-
0" |
31'-1"
|
| 40
|
15 |
17'-
5" |
20'-11"
|
18'-
3" |
21'-11"
|
25'-
0" |
26'-
4" |
23'-10" |
27'-
2" |
30'-
2" |
| 50 |
15
|
16'-
5" |
19'-
8" |
17'-
3" |
20'-
9" |
22'-
3" |
22'-
3" |
22'-
7" |
25'-
9" |
26'-
3" |
| 19.2"
O.C. |
NON
SNOW 125% |
20 |
10 |
21'-0" |
25'-
2" |
22'-
0" |
26'-
5" |
30'-
2" |
33'-
7" |
28'-
9" |
32'-
9" |
36'-
5" |
| 20
|
15
|
19'-
7" |
23'-
7" |
20'-
7" |
24'-
9" |
28'-
3" |
31'-
5" |
26'-11"
|
30'-
8" |
34'-1" |
| 20
|
20
|
18'-
7" |
22'-
4" |
19'-
6" |
23'-
4" |
26'-
8" |
29'-
9" |
25'-
5" |
29'-
0" |
32'-
3" |
| SNOW
115% |
25 |
10 |
19'-1" |
22'-11" |
20'-
0" |
24'-
0" |
27'-
5" |
30'-
6" |
26'-
2" |
29'-
9" |
33'-1"
|
| 25
|
15 |
18'-1"
|
21'-9"
|
19'-
0" |
22'-10"
|
26'-1"
|
29'-
0" |
24'-10"
|
28'-
3" |
31'-5"
|
| 30 |
10
|
18'-
3" |
21'-11"
|
19'-
2" |
23'-
0" |
26'-
3" |
29'-
3" |
25'-
0" |
28'
-6" |
31'-
8" |
| 30
|
15 |
17'-
5" |
20'-11" |
18'-
4" |
21'-11"
|
25'-1"
|
26'-10"
|
23'-11"
|
27'-
3" |
30'-
3" |
| 40
|
10 |
16'-10" |
20'-2"
|
17'-
8" |
21'-
2" |
24'-1"
|
24'-1" |
23'-
0" |
26'-
3" |
28'-
6" |
| 40
|
15 |
16'-
4" |
19'-
5" |
17'-
2" |
20'-
7" |
21'-10"
|
21'-10"
|
22'-
4" |
25'-
6" |
25'-10"
|
| 50
|
15
|
15'-
5" |
17'-
0" |
16'-
3" |
18'-
6" |
18'-
6" |
18'-
6" |
21'-2"
|
21'-10"
|
21'-10" |
| 24"
O.C. |
NON
SNOW 125% |
20 |
10 |
19'-
5" |
23'-
4" |
20'-
5" |
24'-
6" |
27'-11" |
31'-1" |
26'-
8" |
30'-
4" |
33'-
9" |
| 20
|
15
|
18'-
2" |
21'-10" |
19'-1"
|
22'-11"
|
26'-
2" |
29'-1"
|
24'-11"
|
28'-
5" |
31'-
7" |
| 20
|
20 |
17'-
2" |
20'-
8" |
18'-
0" |
21'-
8" |
24'-
9" |
26'-
3" |
23'-
7" |
26'-10" |
29'-10" |
| SNOW
115% |
25 |
10 |
17'-
8" |
21'-3" |
18'-
6" |
22'-
3" |
25'-
5" |
27'-
7" |
24'-
2" |
27'-
7" |
30'-
8" |
| 25 |
15
|
16'-
9" |
20'-
2" |
17'-
7" |
21'-1" |
24'-1"
|
24'-1"
|
23'-
0" |
26'-
2" |
28'-
6" |
| 30 |
10 |
16'-11" |
20'-
4" |
17'-
9" |
21'-
3" |
24'-1"
|
24'-1" |
23'-
2" |
26'-
5" |
28'-
6" |
| 30 |
15 |
16'-
2" |
19'-1" |
16'-11"
|
20'-4" |
21'-
5" |
21'-
5" |
22'-1"
|
25'-
2" |
25'-
3" |
| 40 |
10 |
15'-
7" |
17'-8" |
16'-
4" |
19'-
3" |
19'-
3" |
19'-
3" |
21'-4"
|
22'-
8" |
22'-
8" |
| 40 |
15 |
15'-
0" |
16'-
0" |
15'-10" |
17'-
5" |
17'-
5" |
17'-
5" |
20'-
7" |
20'-
7" |
20'-
7" |
| 50 |
15
|
13'-
6" |
13'-
6" |
14'-
9" |
14'-
9" |
14'-
9" |
14'-
9" |
17'-
5" |
17'-
5" |
17'-
5" |
Notes:
All roof joists to be sloped 1/4" per foot minimum.
Spans shown are horizontal clear spans and can be used for either
simple or multiple span applications. Outermost spans of multiple span applications must
be at least 40% of adjacent spans.
Maximum deflection is limited to L/180 under total load and L/240
under live load.
Live load reductions have been applied in accordance with standard
engineering practices. Verify local building code requirements.
Reduce spans 3'-0" for joist slopes greater that 8/12. Maximum
roof slope is 12/12.
| Please
see the SJ-15 SJ-25 SJ-35 Installation Guide for additional information. |
933HR-03-98-1117 11/98 5M |
