Building Codes and Fire Safety Flashcards
6 cards from real Building Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Building Codes and Fire Safety flashcards as text
What is the purpose of a fire damper in HVAC ductwork?
Answer: To automatically close and block flame and heat transfer when a duct penetrates a fire-rated assembly
Fire dampers close automatically via a fusible link when duct temperature exceeds approximately 165°F, maintaining the fire-resistance integrity of rated walls and floors.
What is the minimum width of a means of egress corridor in a business occupancy per the IBC?
Answer: 44 inches
IBC requires a minimum corridor width of 44 inches in most occupancies to allow two people to pass and accommodate evacuation flow, with wider requirements for high-occupancy uses.
What fire protection system detects smoke and activates audible/visual alarms to warn occupants?
Answer: Fire alarm system per NFPA 72
NFPA 72 governs fire alarm systems that detect fire signatures (smoke, heat, flame) and notify occupants and the fire department through audible and visible notification appliances.
What building feature is required to prevent fire spread between floors in a high-rise building?
Answer: Floor-to-floor fire-rated compartmentalization and vertical shaft enclosures
Rated floor assemblies and enclosed vertical shafts (elevator, stair, mechanical) prevent fire and smoke from traveling vertically between floors of high-rise buildings.
What is the purpose of an exit sign with emergency backup power in a commercial building?
Answer: To remain illuminated during power failures and guide occupants to exits
Emergency-lit exit signs must operate for at least 90 minutes on battery backup so occupants can find exits even when the building loses normal electrical power.
What is the IBC definition of a high-rise building?
Answer: A building with an occupied floor more than 75 feet above the lowest level of fire department vehicle access
IBC defines high-rise buildings based on the 75-foot threshold because this is the practical limit for aerial fire apparatus to reach occupied floors for rescue operations.