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 Reference
10. FIRE ALARM AND DETECTION SYSTEMS
-
Is a system required? If so, what type?
(3),
Sec. 7
- Manual
(2),
Occupancy Chapters
- Heat detection
(4),
Sec. 1.4.5
(3),
Sec. 7.3.3
- Smoke detection
(1),
Sec. 4.1.1 thru
4.1.4; 4.2.1;
4.7.1(c); 4.8.1;
and 7.3.1.1
- Duct smoke detection
NFPA
90A-1993 and
90B-1993,
(1),
Sec. 2.12.4
-
System must be Class A supervised unless
(4),
Sec. 1.7.1 and
adding to an existing Class B system.
Sec.
1.7.1.1; 1.7.2; 1.13
-
Show Class A return loop in separate conduit
(4),
Sec. 1.7.1
then outgoing loop.
-
Avoid piggybacking control panels.
(4), Sec. 1.3
-
Provide manual stations at each required exit (2), Sec. 7-6.2.3
and intermediate locations where required.
and Sec. 7-6.2.4
-
Locate manual stations four feet above floor. (4), Sec. 1.2
-
Open area spacing for all detectors is
(4), Sec. 1.4.2
maximum of 25' apart or 12 1/2' from walls.
Exceptions:
- If cross-zoned above ceiling or underfloor,
maximum spacing is 15' apart or 7 1/2' from
walls.
- If more stringent requirements are found for
irregular ceilings (NFPA 72-1993) or
manufacturer's listing, these must be
followed.
-
Smoke detectors shall be at least three feet (4), Sec. 1.4.6.2
from supply or return air registers.
-
Control panel (with integral annunciation)
(4), Sec. 1.5.1
shall be located in an accessible place
inside the main building entrance.
-
Provide adequate zoning (each floor, each
wing, concealed areas, separate systems, etc.).
-
If concealed detectors or detectors in
(4), Sec. 1.4.4
lockable rooms are not separately zoned,
provide remote indicator lights in accessible
areas such as corridors.
-
Provide a cross-sectional detail of under-
(4), Sec. 1.4.7.1
floor detectors or plans. Detectors must be
located at top of space. Preferable support
arrangement is on a separate bracket inde-
pendent of the sub-floor support system and
located away from cracks between floor tiles.
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