Allowable Attic Space In 40 Foot Span Truss

Some spans have a lower rate per foot than others.

Allowable attic space in 40 foot span truss.

The span in short is the length of the bottom of the truss. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Trusses are professionally designed with state of the art computer programs. Over 51 sizes styles in stock.

Truss capacity is. Alpine truss designs are engineered to meet specific span configuration and load conditions. Up to 40 open framing for plumbing. 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.

Use this handy tool to calculate the rake length of your roof. Custom trusses up to 100 span. The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment. Each truss bears the truss plate institute tpi stamp for quality assurance.

The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Shop roof trusses spacer floor truss.