![]() ![]() ![]() There are two sections in the new span table: one for joists with cantilevers, and one for joists without cantilevers. ![]() This means that joists, such as southern pine 2x10s at 16 inches on-center, spanning 12 feet are allowed to cantilever up to an additional 3 feet (see illustration, below). Joist CantileversĪccording to the new span tables and IRC provisions, cantilevers can extend up to one-fourth the backspan of the joist. Among the provisions are updated span tables for decking, joists, and beams, which will help clarify the rules for cantilevers of joists and beams. Cantilever Code Update By Glenn MathewsonĪ new package of prescriptive deck code provisions-RB 264, which is partly based on the American Wood Council’s DCA 6-was approved at the final ICC code development hearing in early October and will be included in the 2015 International Residential Code (IRC). Let’s make balconies safe by building them right with the best materials and skill available. ![]()
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