Smoke alarms or smoke detectors mounted on a peaked ceiling must be located within how many inches horizontally of the peak?

Smoke alarms or smoke detectors that are mounted on a peaked ceiling should be installed within 36 inches horizontally of the peak. This is important because smoke rises and collects at the highest point in a room, and positioning the detector within this measurement ensures it can effectively sense smoke as it accumulates near the peak.

Placing the detector too close to the peak, beyond 36 inches, may limit its ability to detect smoke in a timely manner, as smoke may not reach the sensor effectively. This regulation helps in maximizing the efficiency and reliability of the smoke detection system, contributing to safety during a fire event. The specified distance aligns with industry standards and guidelines, ensuring comprehensive coverage in areas where smoke might first be detected.