The 2005 Edition of the National Design Specification for
Wood Construction is expected to be approved as an American
National Standard in December 2004 or early 2005,
with a designation ANSl/AF&PA NDS-2005. The 2005 NDS
was developed as a dual format specification incorporating
design provisions for both allowable stress design (ASD)
and load and resistance factor design (LRFD). AF&PA:s
Wood Design Standards Committee (WDSC) guided it
through the consensus process over the course of 2-1/2
years. The primary change in the 2005 NDS is the introduction
of LRFD methods to the Specification.
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