CBD Plumbing & Fixture Integration 2

Question 1

What is the minimum recommended distance between the centerline of a toilet and an adjacent wall or obstruction per most US codes?

Accepted Answer

15 inches

Answer

Most US building codes require a minimum of 15 inches from the toilet centerline to any side wall or obstruction.

Question 2

A pressure-balance valve in a shower is required by US plumbing codes primarily to:

Accepted Answer

Prevent scalding when toilets flush

Answer

Pressure-balance valves maintain a set ratio of hot to cold water to prevent scalding when pressure fluctuates due to toilet flushing or other draws.

Question 3

Which drain configuration is most appropriate for a freestanding soaking tub installed away from the wall?

Accepted Answer

Floor-mounted drain with flexible drain connector

Answer

A floor-mounted drain with a flexible drain connector accommodates the freestanding tub's position away from wall plumbing.

Question 4

When specifying a vessel sink, the designer must ensure the rough-in drain height is set at:

Accepted Answer

A height that accounts for the vessel's depth above the counter

Answer

Vessel sinks sit on top of the countertop, so drain rough-in must account for the added height of the vessel bowl above the deck surface.

Question 5

The ADA-compliant reach range for faucet controls at an accessible lavatory is:

Accepted Answer

Between 15 and 48 inches AFF for side reach

Answer

ADA guidelines allow a maximum high side reach of 48 inches and minimum low reach of 15 inches above finished floor.

(CBD) Certified Bathroom Designer Practice Test