CBD Safety & Building Code Compliance 3

Question 1

In a bathroom shower enclosure, tempered or safety glazing is required for glass panels that are within how many inches of the floor?

Accepted Answer

60 inches

Answer

Safety glazing is required for glass within 60 inches of the standing surface in shower and bathtub enclosures per building codes.

Question 2

What is the minimum required R-value for insulation in exterior bathroom walls in Climate Zone 5 per IECC?

Accepted Answer

R-21

Answer

Climate Zone 5 requires a minimum of R-21 insulation in wood-frame exterior walls per the IECC energy code.

Question 3

Per ADA standards, what is the required mounting height range for bathroom accessories like soap dispensers and towel bars?

Accepted Answer

15 to 48 inches AFF

Answer

ADA requires operable parts and accessories to be mounted between 15 and 48 inches above finished floor (AFF) for reach compliance.

Question 4

Which ASTM standard governs slip resistance testing for bathroom floor tiles?

Accepted Answer

ASTM F2508

Answer

ASTM F2508 is the current standard for measuring slip resistance using the Variable Angle Tribometer (VAT) method for flooring.

Question 5

What is the minimum number of electrical circuits required to serve a bathroom per the NEC?

Accepted Answer

One dedicated 20-amp circuit

Answer

The NEC requires at least one 20-amp circuit dedicated to bathroom receptacle outlets, though lighting may be on a separate circuit.

(CBD) Certified Bathroom Designer Practice Test