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  Willamette StrucJoist SJ-15-25-35 StrucJoist - Page 3
| TABLE 1 |
| StrucJoist Floor Spans |
Live Load = 40 psf |
| |
Dead Load = 10 psf |
| |
LL Defl = L/480 |
| Joist Series |
Joist Depth |
ON - CENTER SPACING
|
| Simple Span |
Multiple Span |
| 12"o/c |
16"o/c |
19.2"o/c |
24"o/c |
12"o/c |
16"o/c |
19.2"o/c |
24"o/c |
| SJ-15 |
9-1/2" |
17'- 2" |
15'- 8" |
14'- 9" |
13'- 9" |
18'- 9" |
17'-1" |
16'-1" |
15'- 0" |
| 11-7/8" |
20'- 6" |
18'- 9" |
17'- 8" |
16'- 5" |
22'- 5" |
20'- 6" |
19'- 4" |
15'- 5" |
| SJ-25 |
9-1/2" |
17'-11" |
16'- 4" |
15'- 5" |
14'- 4" |
19'- 7" |
17'-10" |
16'-10" |
15'- 8" |
| 11-7/8" |
21'- 5" |
19'- 6" |
18'- 5" |
17'-1" |
23'- 5" |
21'- 4" |
20'-1" |
16'- 9" |
| 14" |
24'- 5" |
22'- 3" |
21'- 0" |
19'- 6" |
26'- 8" |
24'- 4" |
21'- 0" |
16'- 9" |
| 16" |
27'- 2" |
24'- 9" |
23'- 4" |
21'- 0" |
29'- 8" |
25'- 3" |
21'- 0" |
16'- 9" |
| SJ-35 |
11-7/8" |
23'- 2" |
21'-1" |
19'-10" |
18'- 5" |
25'- 3" |
23'- 0" |
21'-8" |
19'- 9" |
| 14" |
26'- 4" |
23'-11" |
22'- 7" |
20'-11" |
28'-10" |
26'- 2" |
24'- 8" |
19'- 9" |
| 16" |
29'- 3" |
26'- 7" |
25'-1" |
23'- 3" |
32'- 0" |
29'-1" |
24'- 9" |
19'- 9" |
Notes:
- All spans shown in the tables above are appropriate without
web stiffeners at supports. Spans shown in shaded portion of the table can be increased
with the addition of web stiffeners at interior supports (see table below).
- Spans are based on glued/nailed 3/4" sheathing.
Adhesive shall comply with specification AFG-01 of the American Plywood Association.
- Reduce spans 10" for nailed sheathing only.
- Spans are based on clear distance between supports.
- Outermost spans in multiple span applications must be at
least 40% of the adjacent span.
| Web |
Stiffeners |
| SJ-15 |
1/2" x 2 5/16" minimum |
| SJ-25 |
5/8" x 2 5/16" minimum |
| SJ-35 |
1" x 2 5/16" minimum |
Stiffener material shall be plywood, or OSB rated sheathing
installed with face grain vertical, or construction grade or better solid-sawn (for
1" thickness only.)
| TABLE II |
|
| StrucJoist Floor Spans |
Live Load = 40 psf |
| Joists with Web Stiffeners attached at
interior supports |
Dead Load = 10 psf |
| |
LL Defl = L/480 |
| Joist Series |
Joist Depth |
ON - CENTER SPACING
|
| Multiple Span
|
| 12"o/c |
16"o/c |
19.2"o/c |
24"o/c |
| SJ-15 |
9'-1/2" |
|
|
|
|
| 11'-7/8" |
|
|
|
17'- 5" |
| SJ-25 |
9'-1/2" |
|
|
|
|
| 11'-7/8" |
|
|
|
18'- 8" |
| 14" |
|
|
22'-11" |
20'- 4" |
| 16" |
|
|
25'- 5" |
20'- 4" |
| SJ-35 |
11'-7/8" |
|
|
|
20'-1" |
| 14" |
|
|
|
22'-10" |
| 16" |
|
|
27'- 4" |
23'- 5" |
Note:
- This table is applicable to joists with web stiffeners at
interior supports or joists without web stiffeners when interior supports are a minimum of
5-1/4" wide.
| Please see the SJ-15 SJ-25 SJ-35
Installation Guide for additional information. |
|
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