Construction Supervisor License Practice Exam

What is the maximum size opening permitted in a fire wall?

1. 156 square feet

2. 144 square feet

3. 184 square feet

4. 25 % of the wall area

The correct answer is: 156 square feet

The maximum size opening permitted in a fire wall is based on building codes that are designed to restrict the spread of fire between different areas of a building or between adjacent structures. When evaluating fire walls, it is crucial to have an understanding of the guidelines that outline how openings, such as doors and windows, can be incorporated without compromising the integrity and intended function of the fire wall. The correct choice of 156 square feet is supported by provisions in the International Building Code (IBC) and similar regulations, which provide specifics on the allowable area of openings based on the rating of the wall. Fire walls generally have strict limitations on openings to maintain their fire-resistance rating and effectiveness in preventing fire spread. The specified maximum size of 156 square feet helps ensure that, while functionality is maintained, fire safety is not compromised. When considering other options, the figures of 144 square feet and 184 square feet do not align with typical code requirements, which may indicate that they either undershoot or exceed the accepted limit for openings in fire walls. The 25% of wall area could be misleading as restrictions are more specific and relate to predetermined sizes rather than a percentage which would result in variability based on the total wall area. The emphasis remains on adhering to the established