Patio Cover Patio Roof Beam Span Table

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

Patio cover patio roof beam span table.

Includes size and spacing tables for load bearing and links to related articles. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. The smallest beams for patio covers are typically 4 by 6. A 4 by 10 can usually span up to 12 feet between posts. The cover will consist of either a ledger board attached to the exterior wall pending structural review or beams on the new patio slab leading to a 15 span away from the house to 6x6 posts on galvanized anchor brackets at the other end of the slab.

Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs. The tables below give maximum spans for rafters and beams. 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. 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.

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