CBD Safety & Building Code Compliance 2

Question 1

According to the IRC, what is the minimum ceiling height required in a bathroom?

Accepted Answer

6 feet 8 inches

Answer

The IRC requires a minimum ceiling height of 6 feet 8 inches (2032 mm) in bathrooms, measured at the shower/tub area.

Question 2

Which type of circuit is required by NEC for receptacles installed within 6 feet of a bathroom sink?

Accepted Answer

GFCI-protected circuit

Answer

The NEC requires all receptacles within 6 feet of a bathroom sink to be GFCI-protected to prevent electrocution near water.

Question 3

What is the minimum width of a clear floor space required in front of a toilet per ADA accessibility guidelines?

Accepted Answer

30 inches

Answer

ADA guidelines require a minimum 30-inch wide clear floor space in front of a toilet to accommodate wheelchair transfers.

Question 4

Per IRC code, grab bars must be able to support a minimum static load of how many pounds?

Accepted Answer

300 lbs

Answer

IRC and ADA standards require grab bars to withstand a minimum static load of 250 lbs applied in any direction.

Question 5

Which water temperature is considered the maximum safe setting for a residential bathroom scald prevention?

Accepted Answer

120°F

Answer

120°F is the maximum recommended hot water temperature to prevent scalding, and many codes now require pressure-balancing or thermostatic valves.

(CBD) Certified Bathroom Designer Practice Test