Voluntary Product Standard; DOC PS 20-99 ``American Softwood Lumber Standard''

摘要

The National Institute of Standards and Technology (NIST) announces voluntary product standard DOC PS 20-99 ``American Softwood Lumber Standard'' is to supersede DOC PS 20-94. The Standard establishes standard sizes and requirements for developing and coordinating the lumber grades of the various species of softwood lumber, the assignment of design values, and the preparation of grading rules applicable to each species. Its provisions include implementation of the Standard through an accreditation and certification program; establishment of principal trade classifications and lumber sizes for yard, structural, factory/shop use; classification, measurement, grading and grade-marking of lumber; definitions of terms and procedures to provide a basis for the use of uniform methods in the grading, inspection, measurement and description of softwood lumber; commercial names of the principal softwood species; definitions of terms used in describing standard grades of lumber; and commonly used industry abbreviations. The Standard also includes the organization and functions of the American Lumber Standard Committee, the Board of Review, and the National Grading Rule Committee.