Transcription of Siplast Roof Insulation Systems
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Diaphragm Design Roofing elements have been designed to perform as structural diaphragms for many years in earthquake-prone regions including, Zones 3 & 4 (see Figure 1). The use of the principles of diaphragm design is more recently gaining widespread acceptance in areas subject to high wind load (see Figure 2). These hurricane, tornado, and windstorm-prone areas of the United States are using roof diaphragm design as a cost effective and sound engineering alternative to diagonal bracing, drag struts, and other methods of accommodating such forces. The roof diaphragm is an assembly of joists and panels. The panels are attached to the joists and cause the roof construction to act like the web of an I-beam when subjected to lateral forces.
Roofing elements have been designed to perform as structural diaphragms for many years in earthquake-prone regions including, Zones 3 & 4 (see Figure 1).The use of the principles of diaphragm design is more recently gaining
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