10. FIRE ALARM AND DETECTION SYSTEMS
Is a system required? If so, what type?
- Heat detection
- Smoke detection
Sec. 4.1.1 thru
- Duct smoke detection
System must be Class A supervised unless
Sec. 1.7.1 and
adding to an existing Class B system.
184.108.40.206; 1.7.2; 1.13
Show Class A return loop in separate conduit
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.
- If cross-zoned above ceiling or underfloor,
maximum spacing is 15' apart or 7 1/2' from
- If more stringent requirements are found for
irregular ceilings (NFPA 72-1993) or
manufacturer's listing, these must be
Smoke detectors shall be at least three feet (4), Sec. 220.127.116.11
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. 18.104.22.168
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.