Shed Roof Beam Span Calculator

Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Shed roof beam span calculator.

Enter this measurement into the calculator and select a roof pitch and the length of the rafter will automatically returned along with the rise. In other words if there is a 1 1 2 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 1 2 96 1 1 2 94 1 2. If there is are any questions about anything else then you should contact your supplier or an engineer. Span calculator for wood joists and rafters also available for the android os.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Use our online rafter length calculator to quickly compute the length of the shed roof rafter by entering the measurements of overhead length of roof span pitch or angle. Most interior beams need to include the roof load.

Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. Ridge beams and boards modern raising ceiling joists jlc technical steico construction roof rafter collar tie calculations structural ridge beamtimber steel framing manual single span ridge beamglulam ridge beam span table elcho. Rafter is a sloping beam usually wood that supports a pitched roof. This calculator helps you make the rafters of the suitable sizes required for your roofing.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. It has been my experience to never use a beam smaller than a two ply 2 x 8.