Minimum dressed sizes conforming to nominal sizes are as follows:
Product Classification Minimum Dressed Sizes
(Nominal Size) (See Note 2)
Unseasoned Dry
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Inches Inches Inches
DIMENSION LUMBER
2 x 4 1 9/16 x 3 9/16 1 1/2 x 3 1/2
2 x 6 1 9/16 x 5 5/8 1 1/2 x 5 1/2
2 x 8 1 9/16 x 7 1/2 1 1/2 x 7 1/4
2 x 10 1 9/16 x 9 1/2 1 1/2 x 9 1/4
2 x 12 1 9/16 x 11 1/2 1 1/2 x 11 1/4
(See Note 1)
BOARD LUMBER
1 x 4 25/32 x 3 9/16 3/4 x 3 1/2
1 x 6 25/32 x 5 5/8 3/4 x 5 1/2
1 x 8 25/32 x 7 1/2 3/4 x 7 1/4
1 x 10 25/32 x 9 1/12 3/4 x 9 1/4
1 x 12 25/32 x 11 1/2 3/4 x 11 1/4
Note 1. The dry thicknesses of nominal 3" and 4" lumber are 2 1/2" and 3 1/2"; unseasoned thicknesses are 2 9/16" and 3 9/16". Widths for these thicknesses are the same as shown above.
Note 2. Product Standard 20-70 defines dry lumber as being 19 percent or less in moisture content and unseasoned lumber as being over 19 percent moisture content. The size of lumber changes approximately 1 percent for each 4 percent change in moisture content. Lumber stabilizes at approximately 15 percent moisture content under normal use conditions.
EXAMPLE: Contents will cover 26 square feet when installed at a thickness equal to 6 1/2 inches with a resistance value of R-19. Net Weight 30 lb.
EXAMPLE: Covers 26 square feet and provides a value of R-19. Roll is 12 inches wide by 26 feet long.
EXAMPLE OF APPLICATION STATEMENT: Insulation covering 120 square meters of area has been installed in conformance with manufacturer's recommendations to provide a value of R-19.
The requirements for product identity and net quantity can be met either by display of the package or by information posted on the machine.
Author: Charles H. Barnes
Ala. Admin. Code r. 80-13-4-.04
Statutory Authority:Code of Ala. 1975, § 8-16-15.