Patio Roof Spans

The smallest beams for patio covers are typically 4 by 6.

Patio roof spans.

In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. The tables below give maximum spans for rafters and beams. The total load is 4 000 pounds.

Also available for the android os. Span tables for canada building construction diy chatroom. In the example the beam spans the 10 foot width of the roof. Span calculator for wood joists and rafters also available for the android os.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. To determine the design load of your roof consult your local building code. Patio height hc must always be less than roof height h. Patio roof beam calculator.

The number of supports beams or purlins affects the allowable span length. 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. Please plete the items below and read general notes.

L stands for the span of the beam in feet. A 4 by 10 can usually span up to 12 feet between posts. Single ply beam solution professional deck builder. Maximum rafter spans for a patio roof.

You can determine the allowable spans of different rafter sizes and spacing from the span calculator by the american wood council. Patio cover plans build your or deck. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Maximum roof slope is 5 for monoslope and 22 5 for pitched roof.

Patio roof maximum beam rafter spans home. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Patio width is no less than 2 1m and length is no less than 3 5m. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.