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  Willamette StrucJoist SJ-32-42-55 StrucJoist SJ-32-42-55 - Page 15
| TABLE 6 - StrucJoist ALLOWABLE FLOOR SPANS
FOR FLANGE GRADE A (GRADE C @ 55C) |
LIVE LOAD = 40 PSF |
| Simple Span L/480 LL
Defl. Dead Load = 10 psf ( 12 psf @ 55C) |
| SERIES |
DEPTH |
12" oc |
16" oc |
19.2" oc |
24" oc |
| SJ-15A |
9-1/2" 11-7/8" |
17' 0" 20' 4" |
15' 7" 16' 8" |
14' 9" 17' 7" |
13' 10" 16' 6" |
| SJ-25A |
9-1/2" 11-7/8"
14"
16" |
17' 9" 21' 3"
24' 2"
26' 11" |
16' 3" 19' 5"
22' 1"
24' 6" |
15' 4" 18' 4"
20' 10"
23' 2" |
14' 4" 17' 1"
19' 6"
21' 0" |
| SJ-35C |
11-7/8" 14"
16'' |
22' 8" 25' 9"
28' 7" |
20' 8" 23' 6"
26' 1" |
19' 6" 22' 2"
24' 7" |
18' 2" 20' 8"
22' 11" |
| SJ-55C |
11-7/8" 14"
16" |
25' 7" 29' 1"
32' 3" |
23' 4" 26' 6"
29' 4" |
22' 0" 24' 11"
27' 8" |
20' 6" 23' 3"
25' 9" |
| Simple Span
L/480 LL Defl. Dead Load = 20 psf ( 22 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8' |
17' 0" 20' 4" |
15' 7" 16' 8" |
14' 9" 17' 7" |
13' 9" 15' 11" |
| SJ-25A |
9-1/2" 11-7/8"
14"
16" |
17' 9" 21'3"
24' 2"
26' 11" |
16' 3" 19' 5"
22' 1"
24' 6" |
15' 4" 18' 4"
20' 10"
21' 10" |
14' 4" 17' 1"
17' 5"
17' 5" |
| SJ-35C |
11-7/8" 14'
16" |
22' 8" 25' 9"
28' 7" |
20' 8" 23' 6"
26' 1" |
19' 6" 22' 2"
24' 7" |
18' 2" 20' 7"
20' 7" |
| SJ-55C |
11-7/8" 14"
16" |
25' 7" 29' 1"
32' 3" |
23' 4" 26' 6"
29' 4" |
22' 0" 24' 11"
27' 8" |
20' 6" 22' 5"
22' 5'' |
| Simple Span
L/360 LL Defl. Dead Load = 10 psf (12 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8" |
18' 10" 22' 6" |
17' 3" 20' 7" |
16' 4" 19' 6" |
15' 0" 17' 5" |
| SJ-25A |
9-1/2" 11-7/8"
14"
16" |
19' 8" 23' 6"
26' 9"
29' 9" |
18' 0" 21' 5"
24' 5"
27' 2" |
17' 0" 20' 3"
23' 1"
25' 5" |
15' 11" 18' 11"
21' 0"
21' 0" |
| SJ-35C |
11-7/8" 14''
16'' |
25' 1" 28' 6"
31' 7" |
22' 10" 26' 0"
28' 10" |
21' 7" 24' 6"
27' 3" |
20' 2" 22' 7"
24' 6" |
| SJ-55C |
11-7/8" 14"
16" |
28' 4" 32' 2"
35' 8" |
25' 10" 29' 4"
32' 6" |
24' 4" 27' 7"
30' 7" |
22' 9" 25' 9"
26' 9" |
| Simple Span
L/360 LL Defl. Dead Load = 20 psf (22 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8" |
18' 10" 22' 6" |
16' 10" 19' 6" |
15' 4" 17' 9" |
13' 9" 15' 11" |
| SJ-25A |
9-1/2" 11-7/8''
14''
16" |
19' 8" 23' 6"
26' 9"
29' 5" |
18' 0" 21' 2"
23' 6"
25' 5" |
16' 8" 19' 3"
21' 5"
21' 10" |
14' 11" 17' 3"
17' 5"
17' 5" |
| SJ-35C |
11-7/8'' 14"
16" |
25' 1" 28' 6"
31' 7" |
22' 9" 25' 3"
27' 5" |
20' 9" 23' 0"
25' 0" |
18' 7" 20' 7"
20' 7" |
| SJ-55C |
11-7/8" 14''
16'' |
28' 4" 32' 2"
35' 8" |
25' 10" 29' 4"
32' 6" |
24' 4" 27' 7"
28' 1" |
22' 5" 22' 5"
22' 5" |
| Multiple
Span L/480 LL Defl. Dead Load = 10 psf (12 psf @ 55C) |
| SERIES |
DEPTH |
12" oc |
16" oc |
19.2" oc |
24" oc |
| SJ-15A |
9-1/2" 11-7/8" |
18' 8" 22' 3" |
17' 0" 20' 4" |
16' 1" 19' 3" |
15' 0" 15' 5" |
| SJ-25A |
9-1/2" 11-7/8''
14"
16" |
19' 5" 23'2"
26'5"
29' 5" |
17' 9" 21' 2"
24' 2"
25' 3" |
16' 9" 20' 0"
21' 0"
21' 0" |
15' 8" 16' 9"
16' 9"
16' 9" |
| SJ-35C |
11-7/8" 14"
16" |
24' 9" 28'2"
31' 3" |
22' 7" 25' 8"
28' 6" |
21' 3" 24' 2"
24' 9" |
19' 9" 19' 9"
19' 9" |
| SJ-55C |
11-7/8" 14"
16" |
28' 0" 31' 10"
35' 3' |
25' 6" 28' 11"
32' 1' |
24' 0" 27' 3"
30' 2" |
22' 4" 25' 5"
25' 9" |
| Multiple
Span L/480 LL Defl. Dead Load = 10 psf (12 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8" |
18' 8" 22' 3" |
16' 10" 19' 3" |
15' 4" 16' 0" |
12' 9" 12' 9" |
| SJ-25A |
9-1/2" 11-7/8"
14"
16'' |
19' 5" 23' 2"
26' 5"
28' 1" |
17' 9" 21' 0"
21' 0"
21' 0" |
16' 8" 17' 5"
17' 5"
17' 5" |
13' 11" 13' 11"
13' 11"
13' 11" |
| SJ-35C |
11-7/8" 14"
16" |
24' 9" 28' 2"
31' 3" |
22' 7" 24' 9"
24' 9" |
20' 7" 20' 7"
20' 7" |
16' 5" 16' 5"
16' 5" |
| SJ-55C |
11-7/8" 14"
16" |
28' 0" 31' 10"
35' 3" |
25' 6" 28' 11"
32' 1" |
24' 0" 27' 0''
27' 0" |
21' 7" 21' 7''
21' 7" |
| Multiple
Span L/360 LL Defl. Dead Load = 10 psf (12 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8" |
20' 7" 24' 8" |
18' 5" 21' 4" |
16' 10" 19' 3" |
15' 0" 15' 5" |
| SJ-25A |
9-1/2'' 11-7/8"
14"
16" |
21' 6" 25' 8"
29' 3"
32' 3" |
19' 8" 23' 2"
25' 3"
25' 3" |
18' 3" 21' 0"
21' 0"
21' 0" |
16' 4" 16' 9"
16' 9"
16' 9" |
| SJ-35C |
11-7/8" 14"
16" |
27' 5" 31' 2"
34' 7" |
24' 11" 27' 8"
29' 9" |
22' 9" 24' 9"
24' 9" |
19' 9" 19' 9"
19' 9" |
| SJ-55C |
11-7/8" 14"
16'' |
31' 0" 35' 2"
39' 0" |
28' 2" 32' 0"
35' 6" |
26' 7" 30' 2"
32' 3" |
24' 9" 25' 9"
25' 9" |
| Multiple
Span L/360 LL Defl. Dead Load = 20 psf (22 psf @ 55C) |
| SJ-15A |
9-1/2" 11-7/8" |
19' 5" 22' 6" |
16' 10" 19' 3" |
15' 4" 16' 0" |
12' 9" 12' 9" |
| SJ-25A |
9-1/2" 11 7/8"
14"
16'' |
21' 1" 24' 5"
27' 1"
28' 1" |
18' 3" 21' 0"
21' 0"
21' 0" |
16' 8" 17' 5"
17' 5"
17' 5" |
13' 11" 13' 11"
13' 11"
13' 11" |
| SJ-35C |
11-7/8" 14"
16" |
26' 4" 29' 2"
31' 8" |
22' 9" 24' 9"
24' 9" |
20' 7" 20' 7"
20' 7" |
16' 5" 16' 5"
16' 5" |
| SJ-55C |
11-7/8" 14"
16" |
31' 0" 35' 2"
38' 7" |
27' 9" 30' 10"
32' 5" |
25' 4" 27' 0"
27' 0" |
21' 7" 21' 7"
21' 7" |
Spans are based on sheathing glued and
nailed to the framing as described in Section 7.8 of this report. Reduce spans 10 inches
for nailed sheathing only.
Spans are based on clear distance between
supports. Exterior spans in multiple span applications shall be at least 40% of adjacent
span.
Spans are based on 1-3/4 inch exterior
reactions without web stiffeners and 3-1/2 inch interior reactions without web stiffeners.
L/360 spans are limited to the
corresponding L/480 spans when used in conjunction with Figure 8.
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