| 1. | System Sensor Smoke Alarm Smoke Detector Spacing on Level Ceilings with Beams and Joists User Guide 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 smoo |
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