The height of parapet walls shall not exceed how many times their thickness?

• A. 1.5 times
• B. 2 times
• C. 3 times
• D. 4 times

Answer: (C)

The maximum height of parapet walls relative to their thickness is an important safety and structural consideration in construction. The code stipulates that parapet walls should not exceed three times their thickness to ensure stability and reduce the risk of collapse under various environmental pressures such as wind or seismic activity.

If the parapet wall is too tall relative to its thickness, it may not have the structural integrity to withstand lateral forces. By limiting the height to three times its thickness, it helps to maintain a safety factor and ensures that the wall is proportionate and stable. This guideline is particularly crucial in areas prone to high winds or earthquakes, which may exert significant stress on building structures.

A height-to-thickness ratio beyond this standard could lead to structural failures, posing dangers to the building and its occupants, as well as potential liabilities for those involved in the construction. Hence, the choice of three times the thickness serves as a prudent measure to maintain the integrity of the building's design.