IBC 2308 "Conventional Light-Frame Construction" provides a prescriptive specification for using wood framed portal frames with holdowns. However, in their Techinical bulletin TT-100E, APA did some testing and provided some engineering values that we may use for our engineered light-frame wood projects (e.g.- Polygon Homes). The bulletin allows various parameters and values to be interpolated. For your interest and use, I've customized APA's table with common scenarios we see in our projects (heights, Hem Fir, actual width). Their is a PDF or you made copy the Excel file and further tweek it for you project.
You can find it in the folder: G:\LIBRARY\AF&PA\APA
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