Ceiling Mounted Fire Alarm Strobes

A plan view of a ceiling mounted fire alarm notification device s coverage area shows that the coverage projects outward along the strobe s mounting surface at an equal distance on all sides creating the square coverage areas listed in nfpa 72.

Ceiling mounted fire alarm strobes.

Ceiling mounted fire strobes should not be more than 30 feet above the floor. Refer to the annex of nfpa 72 for exceptions to these guidelines a 18 5 4 3. Corridor spacing of visible signals can be applied if the corridor width is no more than 20 feet wide. In 1974 a product was introduced that literally revolutionized the industry.

The code also allows ceiling mounted strobes to be used for compliance and has a separate table providing the relationship of room size and ceiling height to determine the effective intensity of the strobes in that application. This calculator uses data provided by the user to perform the calculations described in nfpa 72 2002 2007 2010 and 2013 edition which permits the use of a performance based alternative in lieu of tables for spacing ceiling mounted audible visible devices. Wall mounted fire strobes must be placed 80 to 96 inches above the floor and at least six inches from the ceiling in all non sleeping areas. 1609 park 370 place saint louis mo 63042.

See 18 5 4 1 and 18 5 4 2 and for ceiling mounted strobes no more than 30 ft. If the ceilings are higher than 30 feet the strobes must be mounted on the wall. The fire alarm strobes offer a comprehensive feature set including an industry first of 8 candela settings on one appliance low current draw no tools needed for setting changes 12 24 vdc operation universal mounting base and multiple mounting options for both new and retrofit construction. Where low ceiling heights do not permit mounting at a minimum of 80 inches visible appliances shall be mounted within 6 inches of the ceiling.

Remember in non sleeping areas the nfpa requires that wall mount visible notification appliances be installed 80 to 96 above the floor 6 minimum below the ceiling and for ceiling mounted strobes no more than 30 above the floor. Our team had long recognized a need for better smoke detection. Gentex was originally founded as a manufacturer of high quality fire protection products. The world s first dual cell photoelectric smoke alarm.

These calculations are described in nfpa 72 and are to be provided to the authority.