Building Codes & Regulations Flashcards

Which IBC construction type permits the tallest wood-frame buildings when sprinklered?

Answer: Type IV-A (Mass Timber)

The 2021 IBC introduced Type IV-A (Mass Timber), allowing the tallest tall wood buildings—up to 18 stories—when fully sprinklered.

The concept of 'area of rescue assistance' in egress design is primarily intended for:

Answer: Occupants with mobility impairments who cannot use stairs

Areas of rescue assistance provide a safe location within or adjacent to exit enclosures where persons unable to use stairs can await evacuation assistance.

When calculating occupant load for a restaurant dining area, the IBC requires using a factor of:

Answer: 15 sq ft per person

The IBC uses an occupant load factor of 15 sq ft per person for restaurant dining areas with tables and chairs.

A zoning variance differs from a zoning special exception (conditional use permit) in that a variance:

Answer: Provides relief from dimensional standards due to hardship

A variance provides relief from specific dimensional or physical standards (setbacks, height, lot coverage) based on demonstrated hardship, while a special exception permits a use allowed conditionally.

NFPA 13 governs the design and installation of:

Answer: Automatic sprinkler systems

NFPA 13 is the Standard for the Installation of Sprinkler Systems and governs automatic fire sprinkler system design.

Under the IBC, which occupancy group typically requires the highest number of plumbing fixtures per occupant?

Answer: Group I-2 (Hospitals)

Group I-2 (Hospitals and nursing homes) typically requires the most plumbing fixtures due to sanitation, patient care needs, and medical staff ratios.

The 'envelope approach' in ASHRAE 90.1 compliance refers to:

Answer: Prescriptive requirements for roofs, walls, floors, and fenestration

The building envelope prescriptive path in ASHRAE 90.1 sets minimum requirements for the thermal performance of roofs, walls, floors, doors, and windows.