Metal 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.

Metal patio roof beam span table.

For the initial calculation f can be estimated at 1 000. The total load is 4 000 pounds. The smallest beams for patio covers are typically 4 by 6. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts.

A 4 by 10 can usually span up to 12 feet between posts. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. Span tables 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.

Attached flat roof 1ao page14. 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. Colorbeam light structural steel beams provide an ideal roof framing system for all outdoor home improvement projects such as patios carports verandahs and awnings. Patio roof beam calculator roof beam span calculator jackdecor co timber trusses beams patio covers and decks santa clarita christopher french beam span table douglas fir elijahhome co patio roof.

F stands for the beam s fiber strength in bending which depends on the species of wood. For heights outside these ranges contact stramit for further information. The overlapping sections of the beam provide extra rigidity allowing longer spans between supports. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

The figures are based on quality materials. Fill in the parts of the formula that are already known. R cb150 16 beam span table used w 3600 width of frame rafter span χ 6410 fascia beam span the cb150 16 beam achieves the 6000mm span for the fascia beam and can be used for the rafters. Average roof height between 3m and 6 5m 3m h 6 5m.

L stands for the span of the beam in feet. The tables below give maximum spans for rafters and beams. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.