CBD CBD Accessibility & Universal Design 2

Question 1

What is the recommended knee clearance height under a wall-hung vanity to allow forward wheelchair approach per ADA standards?

Accepted Answer

27 inches high, 19 inches deep

Answer

ADA requires a minimum knee clearance of 27 inches high and 19 inches deep under accessible lavatory counters for wheelchair users.

Question 2

For an aging-in-place bathroom, which shower seat type is most recommended for its flexibility and space efficiency when not in use?

Accepted Answer

Fold-down wall-mounted shower seat

Answer

A fold-down wall-mounted seat provides a sturdy, ADA-compliant seating option that folds flat against the wall when not needed, preserving floor space.

Question 3

Which flooring characteristic is most critical when selecting bathroom tile for an accessible or aging-in-place design?

Accepted Answer

A minimum COF (coefficient of friction) of 0.60 wet for slip resistance

Answer

A wet COF of at least 0.60 is recommended by the Americans with Disabilities Act Accessibility Guidelines (ADAAG) to reduce slip-and-fall risk.

Question 4

In an accessible bathroom, what is the maximum height for a wall-hung lavatory basin (measured to the rim) per ADA standards?

Accepted Answer

34 inches

Answer

ADA requires the lavatory rim to be mounted no higher than 34 inches above the finished floor to be reachable from a seated position.

Question 5

What is the purpose of blocking (backing) installed in bathroom walls during construction or renovation?

Accepted Answer

To provide solid anchor points for future or current installation of grab bars and accessories

Answer

Wall blocking provides a solid wood or metal substrate behind the finish wall surface so grab bars can be securely fastened at any location.

(CBD) Certified Bathroom Designer Practice Test

(CBD) Certified Bathroom Designer Practice Test

CBD CBD Accessibility & Universal Design 2