Smoke detectors in beam pockets
Smoke detectors in beam pockets
(OP)
What is meant by beam pocket as stated in NFPA 2002 5.7.3.2.4?
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Smoke detectors in beam pockets
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RE: Smoke detectors in beam pockets
depends on width and depth of beams and hieght of ceiling
RE: Smoke detectors in beam pockets
17.7.3.2.4.2 For level ceilings, the following shall apply:
(1)
For ceilings with beam depths of less than 10 percent of the ceiling height (0.1 H), smooth ceiling spacing shall be permitted. Spot-type smoke detectors shall be permitted to be located on ceilings or on the bottom of beams.
(2)
For ceilings with beam depths equal to or greater than 10 percent of the ceiling height (0.1 H), the following shall apply:
(a)
Where beam spacing is equal to or greater than 40 percent of the ceiling height (0.4 H), spot-type detectors shall be located on the ceiling in each beam pocket.
(b)
Where beam spacing is less than 40 percent of the ceiling height (0.4 H), the following shall be permitted for spot detectors:
i.
Smooth ceiling spacing in the direction parallel to the beams and at one-half smooth ceiling spacing in the direction perpendicular to the beams
ii.
Location of detectors either on the ceiling or on the bottom of the beams
(3)*
For beam pockets formed by intersecting beams, including waffle or pan-type ceilings, the following shall apply:
(a)
For beam depths less than 10 percent of the ceiling height (0.1 H), spacing shall be in accordance with 17.7.3.2.4.2(1).
(b)
For beam depths greater than or equal to 10 percent of the ceiling height (0.1 H), spacing shall be in accordance with 17.7.3.2.4.2(2).
RE: Smoke detectors in beam pockets
Moreoveer, where i can found a free download of NFPA 72 2010?
RE: Smoke detectors in beam pockets
And it is a little hard to scroll
http:
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RE: Smoke detectors in beam pockets
Real world knowledge doesn't fall out of the sky on a parachute, but rather is gained in small increments during moments of panic or curiosity.