What Is Seismic Design for Retractable Awnings?
Retractable awnings (the 13.5.25's — the Fp's; the 0.3's) are designed for (the Fp's — the 0.3SDSIpWp's; the 2.5's) via (the 13.5.25's — the 13.3.1's; the Ip's) and (the 2.5's — the 13.3.1's; the cap's). The design: the 13.5.25's (the Fp's — the 0.3's; the 13.3.1's), the Fp's (the 0.3's — the 2.5's; the 13.3.1's), the 2.5's (the 13.3.1's — the cap's; the 0.3's), and the 1.0's (the Ip's — the 13.1's; the 1.5's). The awning's — the 13.5.25 anchored.
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The 13.5.25's scope
The 13.5.25 (the Fp's — the 0.3's; the 13.3.1's), the Fp (the 0.3SDSIpWp's — the 13.5.25's; the 2.5's), the 2.5 (the 13.3.1's — the 13.5.25's; the cap's), the 0.3 (the 13.5.25's — the 13.3.1's; the floor's), and the 13.3.1 (the 2.5's — the 0.3's; the 13.5.25's).
The Ip's values
The 1.0 (the 1.5's — the 13.1's; the normal's), the 1.5 (the 1.0's — the 13.1's; the egress's), the 13.1 (the 1.0's — the 1.5's; the 13.5.25's), the 2.5 (the 0.3's — the 13.3.1's; the 13.5.25's), and the 13.5.25 (the 1.0's — the 1.5's; the Fp's).
Retraction and wind
The 2.5 (the 13.5.25's — the 13.3.1's; the cap's), the 0.3 (the 13.5.25's — the 13.3.1's; the floor's), the 20-foot (the 13.5.25's — the projection's; the 2.5's), the 13.5.25 (the 20's — the 2.5's; the 0.3's), and the 1.0 (the 13.1's — the 13.5.25's; the Ip's). The awning's — the 13.5.25's 2.5x; the 20's — the projection.
The bottom line
Design retractable awnings per ASCE 7 13.5.25 (Fp = 0.3·SDS·Ip·Wp, 2.5x cap; Ip 1.0/1.5) — 20-ft projections need engineered arms with wind sensors; retraction in high wind is the operating rule.
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