20 Foot Shed Roof Truss Design Calculator

A useful shed roof rafter calculator to calculate the rafter length for the given dimensions of the roof of the building or a structure.

20 foot shed roof truss design calculator. This free roof pitch calculator will take your roof width see the picture and rise the height of the roof and will calculate the roof pitch both as numeric value. Our roof truss calculator can be used to aid you in the purchase of your trusses by determining the quantity of trusses and lineal feet required. 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. In other words if there is a 1 12 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 12 96 1 12 94 12.

If your roof pitch is greater than 3 your roof is considered pitchedread more about roof pitch at wikipedia. The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12. Enter this measurement into the calculator and select a roof pitch and the length of the rafter will automatically returned along with the rise. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area.

Just keep in mind that if the length of the board size is more than 20 feet then you need to use a more expensive type of lvl board. Rafter is the beam supporting the building. Its important that you are using the right design for the right height. Find its length with our online rafter length calculator.

Gambrel roof a gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.