Definitions for "Purlin"
In root construction, a horizontal member supported on the principals and supporting the common rafters.
a continuous horizontal timber running parallel to the ridge, sometimes referred to as side timbers.
Horizontal member placed between two main load carrying structural members. They can be used as spacers carrying decking or roofing materials and providing some lateral support for the main members. BODY { SCROLLBAR-FACE-COLOR: #cc0000; SCROLLBAR-3DLIGHT-COLOR: #ffffff; SCROLLBAR-ARROW-COLOR: #dbdbca; SCROLLBAR-DARKSHADOW-COLOR: #ffffff; SCROLLBAR-BASE-COLOR: #dbdbca