Building Life Safety Systems Flashcards
7 cards from real CFPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Building Life Safety Systems flashcards as text
What minimum smoke compartment size is permitted in a new healthcare occupancy under NFPA 101?
Answer: 22,500 sq ft
NFPA 101 limits smoke compartments in new healthcare occupancies to a maximum floor area of 22,500 square feet.
A stairwell pressurization system must maintain a minimum pressure differential of how many inches of water column (iwc) across a closed stairwell door during a fire?
Answer: 0.05 iwc
NFPA 92 requires stairwell pressurization systems to maintain a minimum pressure differential of 0.05 inches of water column across closed stairwell doors.
Which exit sign characteristic ensures visibility in smoke-filled conditions by using a self-luminous source that does not require electrical power?
Answer: Photoluminescent exit sign
Photoluminescent exit signs absorb and store ambient light energy, then emit it in darkness, providing visibility without electrical power.
Under IBC, what is the maximum distance between handrails on stairs serving an occupant load greater than 50 persons?
Answer: 48 inches
IBC limits stair width between handrails to a maximum of 48 inches for stairs serving occupant loads greater than 50, ensuring occupants can reach a handrail from any point.
What is the function of a smoke damper installed in a duct penetrating a smoke barrier?
Answer: To close automatically upon activation to prevent smoke passage through the barrier
Smoke dampers close automatically when a smoke detector or fire alarm activates to prevent smoke from migrating through ductwork penetrating a smoke barrier.
Which performance-based life safety analysis method uses time-based calculations to ensure occupants can safely evacuate before untenable conditions are reached?
Answer: Required Safe Egress Time (RSET) vs Available Safe Egress Time (ASET)
The RSET vs. ASET method compares the time needed for occupants to evacuate against the time before conditions become untenable, confirming life safety adequacy.
In a high-rise building, which system is required to provide two-way communication between the fire command center and elevator lobbies, stairwells, and areas of refuge?
Answer: Fire department communication (Class A) telephone system
High-rise buildings require a Class A fire department communication telephone system to enable two-way communication between the fire command center and key locations throughout the building.