DW1401831 Rev.K1
Sep 18, 2015
12
8.2.5
Sloping ceiling (peaked and shed)
In the rooms with peaked ceilings, the first row of detectors must be located within 1 m (3 ft.)(measured horizontally) of
the ceiling peak, but not closer than 10 cm (4 in.) vertically to the peak. Additional detectors, if required, must be
located based on the horizontal projection of the ceiling and the type of ceiling construction. In the rooms with shed
ceilings having a slope greater than 1 m in 8 m (1 ft. in 8 ft.), the first row of detectors must be located within 1 m (3 ft.)
of the high end of the ceiling. Additional detectors, if required, must be located based on the horizontal projection of the
ceiling and the type of ceiling construction. For a ceiling slope of less than 30 degrees, all detectors must be spaced
using the height at the peak. For a ceiling slope of 30 degrees or greater, all detectors must be spaced using the
average slope height or the height of the peak.
Figure 11: Heat detector spacing
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Sloped ceiling (peaked type)
Figure 12: Heat detector spacing
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Sloped ceiling (shed type)
