2x4 Rafters Shed Roof Rafter Span Calculator

This calculator helps you make the rafters of the suitable sizes required for your roofing.

2x4 rafters shed roof rafter span calculator.

Span calculator for wood joists and rafters also available for the android os. 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. Input the rafter span on the flat eave overhang and pitch of the roof. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.

An syp rafter can span 8. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. Includes result for hip valley factor slope factor and the roof slope in degrees. As mentioned above a 2 4 spf shed roof rafter can span 11.

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. This calculator is to be used as an estimating tool only. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. That alone is over kill.

For standard shed roof rafter spacing see rafter span chart. 2x4 span 8 feet with a 20 lbs psf live 10 dead load. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. Also available for the android os.

If you live in an area that requires a shed roof rafter to support a heavy load then an spf rafter can only span 7. Instead of over building why not make the shed bigger with that size lumber. 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. Calculating a shed roof with easy rafters.

Rafter is a sloping beam usually wood that supports a pitched roof. An syp rafter can span 11. Easy rafters is designed to calculate shed roofs that are framed to a ledger board nailed against a vertical wall not freestanding shed roofs supported by walls at both ends. Why not just use 1 2 ply so the h clips and other roffing products work with the roof like drip cap and so on.

For instance 2 grade 2x4s at 16 on center will span just over 9. Shed roof a shed roof slopes in one direction only. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.