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The default values for the custom I-Joist database now come from the PRI 400 Performance Standard for I-Joists for APA EWS I-Joists (Limit States Design), November 2013, that is, APA Performance-Rated I-Joists. Previously they were from an older, unknown source,
You are encouraged to change these values to correspond to the manufacturers specifications for the I-joists you are designing, using Database Editor.