thread184-362221: Seismic Zone Anchoring Good afternoon. This thread was closed but thought I'd chime in on the discussion as my company recently encountered this "new" issue. I posed the same question to the NFSA Engineer of the Day (EOD) and they concur, that ALL piping - either seismic bracing or just hanging 1" armovers - that are suspended from a concrete anchor within a seismic zone, that the anchor shall be in compliance with ACI 355.2. Upon further investigation, not only are Hilti's HDI and HDI-P not in compliance, but neither are their widely used in the PNW: Hilti HCI-WF Pre-Case Concrete insert, a.k.a. "banger". This was disconcerting to me as it's never been flagged by any AHJ until we worked on a USACOE project. Anyone know off the top of their head a pre-cast concrete insert that IS in compliance with this NFPA code?
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