DW1401831 Rev.K1
Sep 18, 2015
11
S = 15 m (50 ft.) 2/3 S = 10 m (33 ft.) 1/2 S = 8 m (25 ft.) 1/3 S = 5 m (17 ft.)
Figure 10: Heat detector spacing
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beam construction (plan view)
Notes:
•
Detectors can be installed on the bottom of beams when the beams are less than 30 cm (12 in.) deep and
beam spacing is less than 2.4 m (8 ft.).
•
Beams less than 20 cm (8 in.) deep are considered flat ceilings. Heat detectors must be installted on the
bottom of the beams.
•
Spacing of beams deeper than 20 cm (8 in.) must be reduced by 1/3 of the listed spacing.
