What is the purpose of top plate in framing?
A single top plate can decrease lumber use and boost energy efficiency, but less lumber also decreases the bearing capacity of the top of the wall. … The tolerance requirements ensure adequate bearing capacity by directing the loads from the framing above the top plate directly into the studs below.
A Top Plate is the continuous timber beam on top of the walls that supports the roof structure by carrying the vertical forces from the rafters to the wall studs.
Ribbon Plate goes above top plate.
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