True or False: An enclosed accessible space under stairs should be protected on the enclosed side with a half-inch gypsum board.

The statement is true. An enclosed accessible space under stairs must be protected with a half-inch gypsum board on the enclosed side. This requirement is tied to safety and fire protection standards. Gypsum board acts as a barrier that can help slow the spread of fire and provides additional safety measures in an enclosed space that could potentially be used for storage or other purposes.

In residential and commercial building codes, fire-rated assemblies often apply to areas where there is an increased risk of fire exposure. Enclosing these spaces properly helps ensure that any fire that might start does not rapidly spread, thereby providing valuable time for occupants to evacuate and for emergency services to respond. When assessing such spaces, the focus is on ensuring that the safety features are in place, which is why the use of half-inch gypsum board is a standard requirement.

Options that suggest conditions, such as size of the space or presence of insulation, do not apply universally; therefore, the requirement stands firm regardless of those factors.