The WWPA Lumber Design Suite is a full featured design tool that provides calculations for horizontal framing (beams and joists), vertical framing (posts and studs) and wood-to-wood shear connections.
The Design Suite offers calculations for the major sizes and grades of Western lumber products available in the market today. Lumber Design Suite has been updated to match the 2005 National Design Specification® for Wood Construction (NDS®). The new version also includes a stud wall deflection check, as required by the International Building Code. The Design Suite operates under Microsoft Excel®, using three separate worksheets and macros for the calculations.