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I have a smoke detector in a small bathroom of a building. Later, the client decided to put a false ceiling. In our drawing, it is only mentioned smoke detector. But I do need to add above ceiling smoke detector?

Question asked by shamilbb12 on Jan 2, 2019

The depth of the false ceiling (measured from the actual ceiling) is 900mm. Also, please mention the code number in NFPA 72 for the above issue?