CBD Plumbing & Fixture Integration 3

Question 1

A thermostatic shower valve differs from a pressure-balance valve in that it also:

Accepted Answer

Maintains a preset temperature even when flow rate changes

Answer

Thermostatic valves maintain the user's preset temperature by automatically adjusting the hot/cold mix ratio regardless of supply pressure or temperature fluctuations.

Question 2

Which toilet rough-in dimension is most common in US residential construction?

Accepted Answer

12 inches

Answer

The 12-inch rough-in (from finished wall to center of drain) is the most common standard in US residential bathrooms.

Question 3

For a wall-hung toilet, the in-wall carrier system must be designed to support a minimum static load of:

Accepted Answer

400 lbs

Answer

Most in-wall carrier systems for wall-hung toilets are rated to support a minimum of 400 lbs static load to meet safety standards.

Question 4

A body spray system in a custom shower requires multiple valve outlets. The designer should specify a:

Accepted Answer

Manifold system connected to a master thermostatic valve

Answer

A manifold system connected to a master thermostatic valve allows individual volume control for each body spray while maintaining consistent temperature.

Question 5

When installing a rain shower head in the ceiling, the supply line rough-in is typically located:

Accepted Answer

Inside the ceiling cavity, with a drop ell brought to finished ceiling level

Answer

Ceiling-mounted rain heads require supply piping run through the ceiling cavity with a drop ell positioned to finish flush with the ceiling surface.

(CBD) Certified Bathroom Designer Practice Test

(CBD) Certified Bathroom Designer Practice Test

CBD Plumbing & Fixture Integration 3