Lp I Joist Roof Rafters

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.

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. The rafters carry the applied loads to the exterior walls. Lp solidstart i joists are more versatile than open web floor trusses and more uniform and dimensionally stable than lumber. Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof.

Joists and collar ties. The rafters carry the applied loads to the exterior walls. 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. Build sturdy stable floors with wider flanges.

The function of each component is. In a rafter roof all of these components are required to provide a stable roof. Rafters act more like the top chord of a roof truss than as a roof joist. 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.