The National Roofing Contractors Association has updated Roof Wind Designer, an online wind-load calculator intended to provide roofing professionals with an easy way to determine roof systems' design wind loads for many commonly encountered building types subject to code compliance.
The updated tool can be used to determine design wind loads applicable to perimeter edge-metal flashing system design, which helps regarding compliance with ANSI/SPRI ES-1 requirements. The application is limited to building heights less than 60 feet, and is applicable to roof systems with slopes up to 12:12, and hip roofs with slopes up to 6:12.
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