System Sensor - Smoke Detector Spacing on Level Ceilings with Beams and Joists

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Contents

White Paper September 1 2006 Smoke Detector Spacing on Level Ceilings with Beams and Joists Q Smoke Detector Spacing on Level Ceilings with Beams and Joists following NFPA 72 2002 requirements could result in higher installation costs Ceilings with beams and joists affect detector spacing Executive Overview NFPA 72 The National Fire Alarm Code recommends using 900 square feet 30 feet on center as a guideline for spacing spot type smoke detectors on smooth ceilings While this is only a recommendation virtually all manufacturers of smoke detectors follow this guideline There has always been a question of how detector spacing needs to change when the ceiling is not smooth but is interrupted by beams or joists The language in the 2002 edition ...