| STANDARD SIZES OF SOUTHERN
PINE |
Based on 1994
SPIB Grading Rules |
| |
Thickness
(inches) |
Width
(inches) |
|
Nominal |
Dressed |
Nominal |
Dressed |
|
Dry |
Green |
|
Dry |
Green |
Dimension
Lumber and
Timbers,
dressed
|
2 |
1-1/2 |
|
2 |
1-1/2 |
|
2-1/2 |
2 |
2-1/16 |
3 |
2-1/2 |
2-9/16 |
3 |
2-1/2 |
2-9/16 |
4 |
3-1/2 |
3-9/16 |
3-1/2 |
3 |
3-1/16 |
5 |
4-1/2 |
4-5/8 |
4 |
3-1/2 |
3-9/16 |
6 |
5-1/2 |
5-5/8 |
|
8 |
7-1/4 |
7-1/2 |
10 |
9-1/4 |
9-1/2 |
12 |
11-1/4 |
11-1/2 |
14 |
13-1/4 |
13-1/2 |
16 |
15-1/4 |
15-1/2 |
18 |
17-1/4 |
17-1/2 |
20 |
19-1/4 |
19-1/2 |
Timbers
5" & thicker |
1/2"
off nominal |
1/2"
off nominal |
5"
& wider |
1/2"
off
nominal |
1/2"
off nominal |
Boards,
S4S
|
Nominal |
Dressed |
Nominal |
Dressed |
1 |
3/42 |
2 |
1-1/2 |
1-1/4 |
1 |
3 |
2-1/2 |
1-1/2 |
1-1/4 |
4 |
3-1/2 |
|
|
5 |
4-1/2 |
|
|
6 |
5-1/2 |
|
|
7 |
6-1/2 |
|
|
8 |
7-1/2 |
|
|
9 |
8-1/2 |
|
|
10 |
9-1/2 |
|
|
11 |
10-1/2 |
|
|
12 |
11-1/4 |
|
|
over
12 |
3/4" off |
|
|
|
nominal |
Finish,
dry |
Nominal |
Dressed |
Nominal |
Dressed |
3/8 |
5/16 |
2 |
1-1/2 |
1/2 |
7/16 |
3 |
2-1/2 |
5/8 |
9/16 |
4 |
3-1/2 |
3/4 |
5/8 |
5 |
4-1/2 |
1 |
3/4 |
6 |
5-1/2 |
1-1/4 |
1 |
7 |
6-1/2 |
1-1/2 |
1-1/4 |
8 |
7-1/4 |
1-3/4 |
1-3/8 |
9 |
8-1/4 |
2 |
1-1/2 |
10 |
9-1/4 |
2-1/2 |
2 |
11 |
10-1/4 |
3 |
2-1/2 |
12 |
11-1/4 |
3-1/2 |
3 |
14 |
13-1/4 |
4 |
3-1/2 |
16 |
15-1/4 |
Radius Edge
Decking |
Nominal |
Dressed |
Nominal |
Dressed |
1-1/4 |
1 |
4 |
3-1/2 |
5 |
4-1/2 |
6 |
5-1/2 |
(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 (2 x 14 and wider, 2-1/2" thick by all widths, and 3 x 3 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 to 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 2 x 14 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.
SOUTHERN PINE
REINSPECTION AVAILABILITY
In absence of special agreement between
buyer and seller, the SPIB Standard Grading Rules for Southern Pine Lumber provide that
the purchase, sale or shipment of lumber designated by grades described in these rules
must be construed as involving agreement to abide by all applicable provisions of the
rules, including submission to inspection of any lumber under complaint as to size, grade
or tally.
For complete reinspection information
contact:
Southern Pine Inspection Bureau
4709 Scenic Highway, Pensacola, FL 32504-9094
904/434-2611 l FAX 904/433-5594
Timber Products Inspection
P.O. Box 919, Conyers, GA 30207
770/922-8000 l Fax 770/922-1290 |