4 - ANSWER -Consider a room which is 40' square. How many 15cd
wall mounted strobes are required to adequately cover this space?
Annually - ANSWER -What is the testing frequency of a strobe?
15 - ANSWER -In a corridor application, visible appliances shall be
rated not less than ________ cd?
4 hours - ANSWER -Consider a household fire alarm system where
the primary power is provided by a circuit that can be switched off by
means other than a circuit breaker. The battery must be recharged
in____________
The control unit shall identify the affected detector when the
compensation limit has been reached. - ANSWER -Where automatic
drift compensation of detectors is provided:
3 - ANSWER -A fire alarm system requires the use of smoke detectors
in a corridor. The corridor is 10' wide and 120' long. The ceiling of the
corridor is smooth and flat and 10' high. What is the minimum number
of smoke detectors in the corridor.
One half smooth ceiling
, NFPA 72 17.7.3.2.4.2(2)bi pg 98 - ANSWER -The fire alarm system
design for a room called for smoke detector spacing based on a
smooth flat ceiling. Upon inspecting the room, it is determined that
the ceiling has beams. The beam spacing is less than 40% of the
ceiling height. NFPA72 permits smooth ceiling spacing in the
direction parallel to the beams and __________ spacing in the
direction perpendicular to the beams.
3 - ANSWER -The working drawings for a fire alarm system show that
2 duct detectors are required. The building is a single story with 4
HVAC units (1-5,000 cfm, 1-4000 cfm, 1-3000 cfm, 1-2000 cfm) How
many duct detectors are required?
15
NFPA72 18.4.3.1 pg107 - ANSWER -The fire alarm system for a
building requires the use of audible notification appliances for public
mode notification. To ensure public mode signals are clearly heard,
they shall have a sound level of at least _______ db above the average
ambient sound level?
Location of utilities - ANSWER -Site plans typically include:
Level - ANSWER -A ceiling surface has a slope of 1 in 9. This is
considered a ____________ ceiling.
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