Building Codes Flashcards

Which code serves as the model building code for most provinces and territories in Canada?

Answer: The National Building Code of Canada (NBC)

The National Building Code of Canada (NBC), published by the National Research Council of Canada, serves as the model code that provinces and territories adopt, sometimes with local amendments, as their building regulations.

According to the NBC, what is the minimum ceiling height for habitable rooms in a residential dwelling?

Answer: 2.3 m (7 ft 7 in.)

The NBC specifies a minimum ceiling height of 2.3 m (approximately 7 feet 7 inches) for habitable rooms in residential dwellings, ensuring adequate living space and air volume.

What is the maximum riser height permitted for residential stairs under the NBC?

Answer: 200 mm (7-7/8 in.)

The NBC limits residential stair risers to a maximum of 200 mm (approximately 7-7/8 inches) for safety and consistent stepping rhythm. Risers must also be uniform throughout the flight.

Under the NBC, what is the minimum width of an egress door in a dwelling unit?

Answer: 810 mm (32 in.)

The NBC requires egress doors in dwelling units to have a minimum clear opening width of 810 mm (32 inches), ensuring occupants can exit safely during an emergency.

What does Part 9 of the National Building Code of Canada primarily cover?

Answer: Housing and small buildings (3 storeys or less, 600 m² or less)

Part 9 of the NBC contains prescriptive requirements for housing and small buildings that are 3 storeys or less in building height and 600 m² or less in building area per floor. This is the section most relevant to residential carpentry.

According to the NBC, what is the minimum guard (guardrail) height required for residential balconies?

Answer: 900 mm (35 in.)

The NBC requires guards on residential balconies to be a minimum of 900 mm (approximately 35 inches) high. For locations where the difference in elevation exceeds certain thresholds, higher guards may be required.