2x4 Rafters Shed Roof Rafter Span Calculator

See rafter run to outer wall calculator below.

2x4 rafters shed roof rafter span calculator. Shed roof a shed roof slopes in one direction only. Includes result for hip valley factor slope factor and the roof slope in degrees. An syp rafter can span 11. The roof rafters provide integral structural support to the roof.

There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. Calculating a shed roof with easy rafters. For instance 2 grade 2x4s at 16 on center will span just over 9. Both of these are for light roof loads.

Allow for ridge thickness when determining rafter run to outer wall. Roofing calculators are commonly used by professionals. 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 add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.

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. 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. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. If you d rather not purchase.

Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. As mentioned above a 2 4 spf shed roof rafter can span 11. 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. 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.

Also available for the android os. An syp rafter can span 8. Half building width minus 1 2 ridge thickness. 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.

Span calculator for wood joists and rafters also available for the android os. A manual with rafter length tables.