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• Ceiling areas over 1,000 SF must have horizontal restraint wire or rigid bracing • Ceiling areas over 2,500 SF must have seismic separation joints or full height partitions • Ceilings without rigid bracing must have 2" oversized trim rings for sprinklers and other penetrations
Installation of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Subject to Earthquake Ground Motions1 This standard is issued under the fixed designation E 580/E 580M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
14 lis 2022 · Horizontal bracing. Bracing at each floor (in horizontal planes) provides load paths for the transference of horizontal forces to the planes of vertical bracing. Horizontal bracing is needed at each floor level, however, the floor system itself may provide sufficient resistance. Roofs may also require bracing. Types of bracing
Designing with confidence using Armstrong Ceiling Systems. Armstrong PeakFormTM, Blue TongueTM and U-Profile Ceiling Systems, including Axiom Pelmets, when installed in conformance with this guide can withstand the forces associated with significant seismic activity or other severe events.
9 cze 2022 · When considering seismic bracing solutions, here are some of the key things to consider: Differential movement between the ceiling and the building structure. The weight of the ceiling, and therefore magnitude of seismic loads. Design of the system to withstand horizontal seismic loads.
Armstrong Ceilings has examined sloped ceilings utilizing ceiling panels for Seismic Design Categories C, D, E, F. We have conducted full-scale seismic shake table testing on multiple sloped ceiling designs at the Structural Engineering
Horizontal restraint (splay wires or rigid bracing) within 2 in. of intersection and splayed 90° apart at 45° angles for ceiling areas > 1,000 sq. ft. Not required Required
