Patio Cover Patio Roof Beam Span Table

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Patio cover patio roof beam span table.

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. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Includes size and spacing tables for load bearing and links to related articles. Choose the appropriate span table.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. For free standing canopies of any height up to 3 2m use the span table marked below with an asterisk. Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs.

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 figures are based on quality materials. 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 smallest beams for patio covers are typically 4 by 6.

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