What Is Seismic Anchoring for MEP Systems?
MEP seismic anchorage (the ASCE 7 Chapter 13 — the equipment's; the distribution's) restrains (the Fp — the forces; the Ip — the importance) the rooftop units, the piping, the ducts, and the panels. The anchorage: the equipment's (the curb's — the bolted; the isolators' — the snubbed), the distribution's (the braced — the SMACNA's), and the certification (the shake-table's — the OSHPD's). The earthquake's — the systems' secured.
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Equipment anchorage
The curbs (the seismically rated — the bolted; the 4x — the corners'), the isolators (the snubbed — the restrained; the seismic's — the rated), the housekeeping (the pads' — the doweled; the 4-inch), and the importance (the Ip 1.5 — the essential; the hospitals').
Distribution bracing
The piping (the transverse/longitudinal — the NFPA 13's; the MSS SP-127's), the ducts (the SMACNA — the trapeze's; the cable's), the conduit (the 2.5-inch+ — the braced; the trapezes'), and the cable tray (the braced — the run's).
Certification and coordination
The shake-table (the ICC-ES AC156 — the tested; the SDS's — the qualified), the OSHPD (the OSP — the preapproved; the hospitals'), the BIM (the coordinated — the clashes'; the hangers'), and the inspection (the special — the anchorage's). The anchorage is the operational's — the systems' running after.
The bottom line
Anchor MEP equipment (seismic curbs, snubbed isolators, doweled housekeeping pads) and brace distribution (NFPA 13/SMACNA/MSS SP-127) per ASCE 7 Ch. 13 — use ICC-ES AC156 shake-table certifications and OSHPD preapprovals.
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