Patio Cover Patio Roof Beam Span Table

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

Patio cover patio roof beam span table.

The tables below give maximum spans for rafters and beams. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. Build your patio cover or deck designing with roof rafter span tables board can span 16 ft for a wall pergola patio roof maximum beam rafter spanspatio roof beam calculatorpatio coversplease plete. While your beam size ultimately depends on design factors such as whether you include a covered roof structure or open lattice strips a familiarity with conventional beam spans gives you an idea of how far apart you can space your posts.

The smallest beams for patio covers are typically 4 by 6. Includes size and spacing tables for load bearing and links to related articles. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Monoslope empty under average roof height h patio height hc 3 h 4 4 h 5 5 h 6 5 hc 2 3 d a a 2 4 hc 2 8 f c a 2 8 hc 3 2 g e b monoslope blocked under.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. The figures are based on quality materials.

Choose the appropriate span table.