The function of each component is.
Lp i joist roof rafters.
We offer longer lengths so that ceilings and floors can be designed with fewer pieces saving time on installation.
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 straighter and more uniform in strength stiffness and size than traditional lumber providing a strong sturdy floor.
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.
Lp solidstart i joists are more versatile than open web floor trusses and more uniform and dimensionally stable than lumber.
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.
They can be trimmed on site and long lengths allow ceilings and floors to be designed with fewer pieces saving installation time.
The function of each component is.
Joists and collar ties.
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.