Question

To minimize the effects of fire, smoke, and heat, undercuts on doors required to be fire rated must be

A. no larger than 3/4 inch

B. 1/2 inch

C. at least 1/8 inch

Answer 1

To minimize the effects of fire, smoke, and heat, undercuts on fire rated doors must be no larger than 3/4 inch.

Step-by-step explanation:

To minimize the effects of fire, smoke, and heat, undercuts on fire rated doors must be no larger than 3/4 inch. Undercuts are gaps between the bottom of the door and the floor, allowing airflow and the spread of fire, smoke, and heat. By limiting the size of undercuts, the spread of these elements can be restricted, helping to improve fire safety.