Understanding Purlins: A Guide to Horizontal Structural Members in Roof Framing
Purlins are horizontal structural members used in framing to support the rafters and provide additional strength to the roof structure. They are typically made of wood or metal, and are placed at regular intervals along the length of the roof. Purlins help to distribute the weight of the roof evenly and provide a nailing surface for the shingles or other roofing material.
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