Associate Commitee on the National Building Code
Span Tables for Wood Joists, Rafters, Trusses and Beams - Ottawa National Research Council of Canada 1977 - p.56
624.177 A84S
Span Tables for Wood Joists, Rafters, Trusses and Beams - Ottawa National Research Council of Canada 1977 - p.56
624.177 A84S