This free online truss calculator is a truss design tool that generates the axial forces, reactions of completely customisable 2d truss structures or rafters. it has a wide range of applications including being used as a wood truss calculator, roof truss calculator, roof rafter calculator, scissor truss calculator or roof framing.. 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. rise and run means that a 6/12 pitch roof has 6" of rise (vertical) for each foot of run (horizontal).. Roof trusses are prefabricated, triangulated wooden structures used to support the roof. the alternative is to build up the roof's frame with 2x8s and 2x10s. trusses are required by all building codes to be engineered by a structural engineer and have an engineer�s stamp on the truss�s drawings..
If you�re thinking about replacing your roof with a new one, you will need a roof truss calculator. this online truss calculator will determine the all-in cost of your truss based on key inputs related to the pitch, width and overhang of your roof.. Truss calculator our truss estimator tool allows you to determine the amount, weight and estimated price of the trusses required for standard barn dimensions. enter the dimension of the barn (and lean to) that you would like to build, and hit the calculate button to get an immediate estimate.. Aroostook trusses - a family owned business established in 1996..