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• Design Values and Spans for Alaskan Species Lumber

Design values for Alaska Yellow Cedar, Alaska Hemlock and Alaska Spruce dimension lumber products.

• Design Values for U.S. and Canada Species Group Combinations

Design Values for U.S. and Canada Species Group Combinations

• Lumber Design Values and Framing Spans

Lumber design values and framing spans for Douglas Fir-Larch, Hem-Fir, Southern Pine and Spruce-Pine-Fir (SPF).

• NO LONGER AVAILABLE - WWPA Lumber Design Suite & DesignEasy - Design Tools

The WWPA Design Suite and DesignEasy programs are no longer available by WWPA. This includes Beams and Joists, Posts and Studs, Shear Connects and Shrinkage Estimator software programs. For assistance determining joist and rafter spans, please download the Span Table Book. Available for free with registration.

• Western Lumber Product Use Manual

Comprehensive technical manual on WWPA lumber products, featuring basic categories of lumber, grades, sizes and species groups, Base Values and adjustment factors for dimension lumber, along with design values for structural decking, MSR lumber, structural-glued products along with posts and timbers. Also includes end-use recommendations and specification guidelines, section properties, relative mechanical properties, appearance lumber grades and sizes and industrial products. 24 page.

• Western Lumber Span Tables

Span tables with common loading condition for floor and ceiling jousts and rafters. Calculated in Base Values with size and repetitive member adjustments built in. Available in digital format only. (PDF File)