Concrete Q & A: Anchorage of Sprinkler Piping
Don Meinheit and John Silva
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I’m a construction contract administrator on a multi-story concrete building project. The structural drawings for the project state that the building is in Seismic Design Category C per ASCE/SEI 7-10.1 The subcontractor for the sprinkler system has submitted shop drawings showing that drop-in anchors are to be used for supporting sprinkler piping. The anchor manufacturer’s test reports include only data from tests in uncracked concrete, however, so I have rejected the submittal because the indicated anchors aren’t allowed in seismic applications. The subcontractor has been fighting back, claiming that NFPA 13, “Standard for the Installation of Sprinkler Systems,”2 allows the drop-in anchors for hanging sprinkler pipes, regardless of seismic category. Am I correct?