Fire Protection · F-MYMXC

Smoke Detector Mounting Requirements at Sloped and Flat Ceilings

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Smoke detectors must be mounted maintaining specific horizontal and vertical clearances from architectural features such as sloped ceilings, walls, air registers, and ceiling fans. On shed or sloped ceilings, the top of the detector is permitted within a designated acceptable zone between four inches and thirty-six inches horizontally from the peak, while areas directly in the uppermost peak are excluded. Additional location restrictions require a minimum horizontal distance of ten feet from fixed cooking appliances, thirty-six inches from doors containing a shower or tub, thirty-six inches from air registers, and thirty-six inches from ceiling fans.

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