Lp I Joist Roof Rafters

Lp solidstart i joists are straighter and more uniform in strength stiffness and size than traditional lumber providing a strong sturdy floor.

Lp i joist roof rafters.

Joists and collar ties. The rafters carry the applied loads to the exterior walls. Rafters act more like the top chord of a roof truss than as a roof joist. Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof.

Lp solidstart i joists are more versatile than open web floor trusses and more uniform and dimensionally stable than lumber. We offer longer lengths so that ceilings and floors can be designed with fewer pieces saving time on installation. In a typical roof framed with dimension lumber the rafters rest on the exterior wall top plate at the lower end and bear against a ridge board at the top. The function of each component is.

Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other. The ridge board is non load bearing and merely provides the point of connection for the opposing rafters and is only a nominal 1 thick. The rafters carry the applied loads to the exterior walls. Build sturdy stable floors with wider flanges.