Free Span Roof Trusses

The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment.

Free span roof trusses.

Residential trusses save time and materials compared to conventional hand framing. Alpine truss designs are engineered to meet specific span configuration and load conditions. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge.

The same thing is true for the bridge of the truss. 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. For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically. The rise will be the elevation change over the 12 inches.

Each truss bears the truss plate institute tpi stamp for quality assurance. Dec 15 2013 free truss plans. As well running an attic air duct system can be very difficult if the roof trusses were not designed for that application. 24 28 30 32 34 36 38 40 42 44 48 50 60 truss.

Trusses are professionally designed with state of the art computer programs. Truss capacity is. Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run. The run or the base number is 12 inches.