The figures are based on quality materials.
Patio cover patio roof beam span table.
For free standing canopies of any height up to 3 2m use the span table marked below with an asterisk.
Beam span table douglas fir elijahhome co garage door header size benjaminremodeling co roofing beam spans pitch roof span tables patio cover kits pre designed covers patio roof beam calculator.
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.
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.
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.
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.
Choose the appropriate span table.
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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.
Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs.