|
Thickness |
Width |
Dimension Lumber
dressed,
S4S1
|
Nominal |
Dressed |
Nominal |
Dressed |
|
Dry |
Green |
|
Dry |
Green |
| inches |
inches |
mm |
inches |
mm |
inches |
inches |
mm |
inches |
mm |
|
|
|
|
n/a
2-1/16
2-9/16
3-1/16
3-9/16
|
|
|
2
3
4
5
6
8
10
12
14
16
18
20
|
|
1-1/2
2-1/2
3-1/2
4-1/2
5-1/2
7-1/4
9-1/4
11-1/4
13-1/4
15-1/4
17-1/4
19-1/4
|
|
38
64
89
114
140
184
235
286
337
387
438
489
|
|
n/a
2-9/16
3-9/16
4-5/8
5-5/8
7-1/2
9-1/2
11-1/2
13-1/2
15-1/2
17-1/2
19-1/2
|
|
n/a
65
90
117
143
190
241
292
343
394
444
495
|
|
Timbers
dressed, S4S1 |
5" & thicker |
1/2" off nominal |
1/2" off nominal |
5" & wider |
1/2" off nominal |
1/2" off nominal |
Boards
dressed,
S4S, dry |
Nominal |
Dressed |
Nominal |
Dressed |
| inches |
inches |
mm |
inches |
inches |
mm |
|
|
|
|
2
3
4
5
6
7
8
9
10
11
12
over 12
|
|
1-1/2
2-1/2
3-1/2
4-1/2
5-1/2
6-1/2
7-1/4
8-1/4
9-1/4
10-1/4
11-1/4
3/4" off
nominal
|
|
38
64
89
114
140
165
184
210
235
260
286
19 mm off
nominal
|
|
Finish
dressed,
dry |
Nominal |
Dressed |
Nominal |
Dressed |
| inches |
inches |
mm |
inches |
inches |
mm |
3/8
1/2
5/8
3/4
1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
4
|
|
5/16
7/16
9/16
5/8
3/4
1
1-1/4
1-3/8
1-1/2
2
2-1/2
3
3-1/2
|
|
8
11
14
16
19
25
32
35
38
51
64
76
89
|
|
2
3
4
5
6
7
8
9
10
11
12
14
16
|
|
1-1/2
2-1/2
3-1/2
4-1/2
5-1/2
6-1/2
7-1/4
8-1/4
9-1/4
10-1/4
11-1/4
13-1/4
15-1/4
|
|
38
64
89
114
140
165
184
210
235
260
286
337
387
|
|
Radius Edge
Decking
dressed, S4S,
dry |
Nominal |
Dressed |
Nominal |
Dressed |
| inches |
inches |
mm |
inches |
inches |
mm |
|
|
|
|
|
|
|
(1) Dimension Lumber 2" thick and less than 14" wide is required to be dry with a moisture content of 19% or less. Heavy Dimension Lumber (2x14 and wider, 2-1/2" thick by all widths, and 3x3 and larger) and Timbers are not required to be dry unless specified. Thicknesses apply to their corresponding widths as squares and wider, except a thickness of 1-9/16" applies to nominal 2" in widths of 14" and wider if dressed green. (In 2" Dimension, widths over 12" are not customary stock sizes, so 2x14 and wider sizes are usually produced only on special order.)
(2) Boards less than the minimum dressed thickness for 1" nominal but which are 5/8" or greater thickness dry may be regarded as American Standard Lumber, but such Boards shall be marked to show the size and condition of seasoning at the time of dressing. They shall also be distinguished from 1" Boards on invoices and certificates.
|
