Residential Roof Truss Span Calculator

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.

Residential roof truss span 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. Use this handy tool to calculate the rake length of your roof. It will use the current cost of wooden rafters based on the average price found at home improvement stores. Also available for the android os.

Span calculator for wood joists and rafters also available for the android os. 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. 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. Is a family owned and operated designer and manufacturer of wooden roof trusses in north central idaho.

Over 51 sizes styles in stock. Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. When making a selection below to narrow your results down each selection made will reload the page to display the desired results. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Alpine truss designs are engineered to meet specific span configuration and load conditions.

Shop roof trusses spacer floor truss. Click to add item 26 spreadweb residential roof truss 6 12 pitch 87 to the compare list. Custom trusses up to 100 span.