The function of each component is.
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.
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.
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.
We offer longer lengths so that ceilings and floors can be designed with fewer pieces saving time on installation.
The function of each component is.
Joists and collar ties.
They can be trimmed on site and long lengths allow ceilings and floors to be designed with fewer pieces saving installation time.
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.
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 rafters carry the applied loads to the exterior walls.
The rafters carry the applied loads to the exterior walls.