July 2016
-19-
K-76-1000
Beams and Solid Joists
For smoke detector spacing, solid joists are considered equivalent to beams.
For ceilings with a beam or solid joist depth less than 10 percent of the ceiling height (0.1 H), mount the
detectors on the bottom of beams.
For ceilings with a beam or solid joist depth equal to or greater than 10 percent of the ceiling height
(0.1 H) and a beam spacing equal to or greater than 40 percent of the ceiling height (0.4 H), locate the
detectors on the ceiling in each beam pocket.
For ceilings with a beam depth equal to or greater than 10 percent of the ceiling height (0.1 H) and a beam
spacing less than 40 percent of the ceiling height (0.4 H), locate the detectors either on the bottom of the
beams or on the ceiling at smooth ceiling spacing in the direction parallel to the beams and at one-half
smooth ceiling spacing in the direction perpendicular to the beams.
Figure 11. Smoke Detector Spacing for Beam Construction
H = Ceiling Heights
1
< 1.0 H
2.
≥
. 0.1 H and
≥
. 0.4 H
3.
≤
0.1 H and
≥
. 0.4 H
4. Side view
5. Ceiling Section
6. Heat detector
7. Solid beam
≥
0.4 H
≤
0.4 H
5
5
5
1
6
6
6
6
2
3
7
7
7
4
4
4
Содержание DS Series
Страница 1: ...K 73 200 Rev AB July 2015 DS Series Addressable Detector Application Guide K 76 1000 ...
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Страница 3: ...July 2016 1 K 76 1000 FOREWORD ...
Страница 6: ...K 76 1000 4 July 2016 NOTES ...
Страница 7: ...July 2016 5 K 76 1000 OVERVIEW ...
Страница 10: ...K 76 1000 8 July 2016 NOTES ...
Страница 11: ...July 2016 9 K 76 1000 HEAT DETECTOR SPACING ...
Страница 19: ...July 2016 17 K 76 1000 SMOKE DETECTOR SPACING ...
Страница 26: ...K 76 1000 24 July 2016 NOTES ...
Страница 27: ...July 2016 25 K 76 1000 HEAT DETECTOR APPLICATIONS ...
Страница 29: ...July 2016 27 K 76 1000 SMOKE DETECTOR APPLICATIONS ...
Страница 31: ...July 2016 29 K 76 1000 AIR DUCT SMOKE DETECTOR APPLICATIONS ...
Страница 35: ...July 2016 33 K 76 1000 TESTING AND MAINTENANCE ...
Страница 40: ...K 76 1000 38 July 2016 NOTES ...
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