Patio Roof Spans

Patio cover plans build your or deck.

Patio roof spans.

Span tables for canada building construction diy chatroom. That depends on the design load of your roof and the span of your rafters. Please plete the items below and read general notes. To determine the design load of your roof consult your local building code.

Patio height hc must always be less than roof height h. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. Maximum rafter spans for a patio roof. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.

A 4 by 10 can usually span up to 12 feet between posts. L stands for the span of the beam in feet. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. Patio width is no less than 2 1m and length is no less than 3 5m.

The tables below give maximum spans for rafters and beams. 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. F stands for the beam s fiber strength in bending which depends on the species of wood.

The smallest beams for patio covers are typically 4 by 6. These are specific to the area where you live. The total load is 4 000 pounds. In the example the beam spans the 10 foot width of the roof.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Patio roof beam calculator. The number of supports beams or purlins affects the allowable span length.

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. Single ply beam solution professional deck builder. You can determine the allowable spans of different rafter sizes and spacing from the span calculator by the american wood council. Patio roof maximum beam rafter spans home.