ROOF DECKING MEMBRANE WELDING SYSTEM AND METHOD

摘要

A roof decking membrane welding system and method comprises first arid second roof decking membranes having edge portions thereof welded to each other so as to define a seamed connection therebetween. The edge portion of a first one of the membranes is disposed beneath a seam plate and folded over the top of the seam plate so as to be secured upon itself either at a location adjacent to the seamed con- nection with the second membrane or between the first mem- brane and the edge portion of the second membrane. In either case, the folded edge portion of the first membrane forms a closed loop portion which presents multiple regions for load-sharing in resisting uplifting wind load forces. Al- ternatively, the edge portion of the first membrane is fold- ed over itself but disposed beneath the seam plate so as to present dual plies of the first membrane for engagement with the seam plate so as to again provide load-sharing charact- eristics under uplifting wind load forces.