Wood Roof Decking Spans

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

Wood roof decking spans.

Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Span calculator for wood joists and rafters also available for the android os. Deck beam span table deck joist span table deck joist rule of thumb deck porch construction structural fasteners deck porch post beam connectors. Plywood used for roof decking is typically called sheathing and carries a grade stamp indicating its load and span ratings and other performance factors.

All end joints occur in line on every other support figure 6. Also available for the android os. All pieces are supported on three supports. With less than 4 supports a special.

Tongue and groove decking provides the customer with an outstanding solution for roof and subfloor structure where exposed to the lower level. 4 tongue and groove roof decking. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. This tongue and groove decking combines appearance grade with unsurpassed quality of finish making them ideal for exposed ceiling applications.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. This arrangement is applicable to 4 or more supports 3 or more spans. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Structural decking also known as roof decking should not be confused with lumber intended for residential and non residential outdoor decks.

Steel post cap connectors plywood post to beam cleats other connectors deck porch railings code requirements safety deck framing tables codes specifications questions answers about allowable spans for deck floor or porch framing. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.