DOC - FED PS20-70
AMERICAN SOFTWOOD LUMBER STANDARD
|Publication Date:||1 January 1970|
General-This Product Standard covers the principal trade classifications and sizes of softwood lumber for yard, structural, and shop use. It provides a common basis of understanding for the classification, measurement, grading, and grade marking of rough and dressed sizes of various items of lumber, including finish, boards, dimension, and timbers.
Supplementary-This Standard also includes the following:
( 1 ) the organization and functions of the American Lumber Standards Committee, its Board of Review, and the National Grading Rule Committee,
(2) the standard commercial names of the principal softwood species,
(3) the standard definitions of terms used in describing standard grades of lumber,
(4) the standard lumber industry abbreviations.
General-The responsibility of the entire softwood lumber industry for maintaining, in the public interest, nationally recognized size, grade, and inspection standards is recognized. The purpose of this Product Standard is to establish voluntary standards for the size, grade and inspection of softwood lumber.
This Product Standard is intended to establish a common basis for uniform industry. wide inspection and grade-marking practices for each piece of lumber which is produced and sold in accordance with the provisions hereof. The Standard also provides a standardized working basis for the coordination of the grades of the various species of softwood lumber and for the preparation of grading rules applicable to each species. These American Lumber Standards are not intended for use either as grading rules or as purchase specifications.