Metal Patio Roof Beam Span Table

The total load is 4 000 pounds.

Metal patio roof beam span table.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Fill in the parts of the formula that are already known. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. 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. Attached flat roof 1ao page14. In the example the beam spans the 10 foot width of the roof. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

For the initial calculation f can be estimated at 1 000. For heights outside these ranges contact stramit for further information. 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. Span tables are based on patio height and average roof heights as specified in the empty under and blocked under selection tables.

Maximum patio height hc is 3 2m. Average roof height between 3m and 6 5m 3m h 6 5m. A 4 by 10 can usually span up to 12 feet between posts. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts.

The smallest beams for patio covers are typically 4 by 6. Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. 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. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts.

The figures are based on quality materials. The overlapping sections of the beam provide extra rigidity allowing longer spans between supports. The tables below give maximum spans for rafters and beams.