Table 2. Maximum Stud or Joist Spacing for Support of Plywood Sheathing
Maximum
Strong Way
Weak Way
Concrete
(5-Ply Sanded,
(5-Ply Sanded,
Pressure
Face Grain Perpendicular to the Stud)
Face Grain Parallel to the Stud)
(psf)
1/2˝
5/8˝
3/4˝
1˝ (7 ply)
1/2˝
5/8˝
3/4˝
1˝ (7 ply)
75
20
24
26
31
13
18
23
30
100
18
22
24
29
12
17
22
28
125
17
20
23
28
11
15
20
27
150
16
19
22
27
11
15
19
25
175
15
18
21
26
10
14
18
24
200
15
17
20
25
10
13
17
24
300
13
15
17
22
8
12
15
21
400
12
14
16
20
8
11
14
19
500
11
13
15
19
7
10
13
18
600
10
12
14
17
6
9
12
17
700
10
11
13
16
6
9
11
16
800
9
10
12
15
5
8
11
15
900
9
10
11
14
4
8
9
15
1,000
8
9
10
13
4
7
9
14
1,100
7
9
10
12
4
6
8
12
1,200
7
8
10
11
--
6
7
11
1,300
6
8
9
11
--
5
7
11
1,400
6
7
9
10
--
5
6
10
1,500
5
7
9
9
--
5
6
9
1,600
5
6
8
9
--
4
5
9
1,700
5
6
8
8
--
4
5
8
1,800
4
6
8
8
--
4
5
8
1,900
4
5
8
7
--
4
4
7
2,000
4
5
7
7
--
--
4
7
2,200
4
5
6
6
--
--
4
6
2,400
--
4
5
6
--
--
4
6
2,600
--
4
5
5
--
--
--
5
2,800
--
4
4
5
--
--
--
5
3,000
--
--
4
5
--
--
--
5
NOTE: Use the strong-way columns for computing problems in this course.
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