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DOC - FED PS20-70 - AMERICAN SOFTWOOD LUMBER STANDARD Organization: DOC
Date: 1970-01-01
Description: 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.
ALSC PS 20 - AMERICAN SOFTWOOD LUMBER STANDARD - TO PURCHASE CALL 1-800-854-7179 USA/CANADA OR 303-397-7956 WORLDWIDE Organization: ALSC
Date: 2010-06-01
Description: This Standard also provides a basis for the coordination of the grades of the various species of softwood lumber, the assignment of design values to lumber when called for, and the preparation of grading rules applicable to each species.
ASTM D1990 - STANDARD PRACTICE FOR ESTABLISHING ALLOWABLE PROPERTIES FOR VISUALLY-GRADED DIMENSION LUMBER FROM IN-GRADE TESTS OF FULL-SIZE SPECIMENS Organization: ASTM
Date: 2016-05-01
Description: This practice is focused on, but is not limited to, grades which used the concepts incorporated in Practice D245 and were developed and interpreted under American Softwood Lumber PS 20. A basic assumption of the procedures used in this practice is that the samples selected and tested are representative of the entire global population being evaluated.
ASTM D1165 - STANDARD NOMENCLATURE OF COMMERCIAL HARDWOODS AND SOFTWOODS Organization: ASTM
Date: 2013-08-01
Description: The designations in parentheses, (North) and (South), a convention used by the American Lumber Standard Committee (ALSC) accredited lumber rules writing agencies listed in NIST PS 20, identify a commercial name applied only when the included species are harvested from Canada as (North) or the United States as (South).
AWC WSDD - WOOD STRUCTURAL DESIGN DATA - INCORPORATES 1992 REVISIONS Organization: AWC
Date: 1986-01-01
Description: Tabular data relate to dressed sizes conforming to the American Softwood Lumber Standard, Voluntary Product Standard 20-70, U.S.

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