A horizontal structural member spanning between beams or trusses to support a roof deck. In slope glazing, purlins are the horizontal framing members.
Found on
http://www.encyclo.co.uk/local/20933
Horizontal heavy section timber, steel or glulam that run at right angles to the underside of the roof rafters. They carry the load of the roof to the gable ends of a house and also generally supported on internal panels which transfer the loads to the foundations
Found on
https://www.encyclo.co.uk/local/20696
No exact match found.
