Residential Roof Truss Span Calculator

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.

Residential roof truss span calculator.

When making a selection below to narrow your results down each selection made will reload the page to display the desired results. 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. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Custom trusses up to 100 span.

Over 51 sizes styles in stock. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. Also available for the android os.

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. Widely known for producing a quality product for over 20 years barlow truss provide any type of wooden roof truss you need. Click to add item 26 spreadweb residential roof truss 6 12 pitch 87 to the compare list. Span calculator for wood joists and rafters also available for the android os.

8 10 foot 1 10 foot 1. Is a family owned and operated designer and manufacturer of wooden roof trusses in north central idaho. 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 the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

Use this handy tool to calculate the rake length of your roof. 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. It will use the current cost of wooden rafters based on the average price found at home improvement stores.