Patio Cover Patio Roof Beam Span Table

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.

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. Includes size and spacing tables for load bearing and links to related articles. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

The figures are based on quality materials. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. The tables below give maximum spans for rafters and beams.

Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. 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. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

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