Question

Which of the following definition below describes a wall opening?

A.
An opening at least 30 inches high and 18 inches wide in any wall or partition.
B.
An opening measuring 12 inches or more in walking or working surface.
C.
Any ladder that can be readily moved or carried.
D.
Any temporarily elevated platform and its supporting structure.

Answer 1

A. An opening at least 30 inches high and 18 inches wide in any wall or partition. 

Answer 2

The answer is A: An opening at least 30 inches high and 18 inches wide in any wall or partition.

An opening in a wall or a partition is defined as an opening 30 inches or more high and 18 inches wide through which persons may fall. A wall opening includes a chute opening or a yard-arm doorway. Wall openings are easy to make since they do not have to go to elevation to manage its size.