2x4 Rafters Shed Roof Rafter Span Calculator

Shed roof a shed roof slopes in one direction only.

2x4 rafters shed roof rafter span calculator. Half building width minus 1 2 ridge thickness. For standard shed roof rafter spacing see rafter span chart. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. 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.

See rafter run to outer wall calculator below. 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. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. Rafter length using pitch v r 2 sqrt 1 p 2 where v overhang r roof span p pitch 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.

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. 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. 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. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.

Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through. As mentioned above a 2 4 spf shed roof rafter can span 11. Both of these are for light roof loads. Span calculator for wood joists and rafters also available for the android os.

A manual with rafter length tables. Also available for the android os. For instance 2 grade 2x4s at 16 on center will span just over 9. If you d rather not purchase.

Calculating a shed roof with easy rafters. The roof rafters provide integral structural support to the roof. Roofing calculators are commonly used by professionals. An syp rafter can span 8.

An syp rafter can span 11. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.