Joist & Beam Sizing Tables & A Quick Rule of Thumb for Sizing Joists Find here: Framing span tables for common building structures using both dimension lumber and timber frame construction methods. We include common rules-of-thumb that can help you make a quick guess at whether or not your ...
(1) subfloor thickness should be less than 28.5 mm (typical subfloors used in Canada are OSB, while in Australia particle board is more common), (2) in multi-span floors the effective composite joist bending stiffness factor should be 1.2, and (3) the stiffness contribution of a concrete...