CF-03-057- Solid Joist Construction Joists are solid projections, whether structural or not, extending downward from the ceiling that are more than 4 in. in depth and are spaced on centers of 36 in. or less The commonly encountered 2 in. by 10 in. rafter installed on...
CF-03-056- Spot Type Location Solid joist construction Heat detector mounted at the bottom of the joists NFPA 17.6.3.2.2 Beam construction where beams are less than 12” in depth and less than 8’ on center, detectors shall be permitted to be installed on the bottom of...
CF-03-055- Line-type Detector Spacing Line-type heat detectors shall be located on the ceiling or on the sidewalls not more than 20 in. from the ceiling The manufacturer’s installation instructions shall be...
CF-03-054- Smooth Ceiling Spacing The distance between heat detectors shall not exceed their listed spacing (typically 50 feet) All points on the ceiling shall have a detector within a distance equal to or less than 0.7 times the listed spacing (35...
CF-03-053- Heat Detector Mounting On the ceiling not less than 4 in. from a sidewall to the near edge On a sidewall, between 4 in. and 12 in. down from the ceiling to the top of the...
