The minimum height of a parapet above the roof surface and wall intersection must be how many inches?

The requirement for the minimum height of a parapet above the roof surface and wall intersection is crucial for ensuring safety, especially in commercial buildings. The correct answer of 30 inches is established to provide adequate protection against potential falls, as well as to offer structural integrity to the building's design. A parapet that is at least 30 inches in height can effectively serve its purpose in preventing accidents while also helping to shield the building from environmental elements.

In building codes and regulations, this height ensures that the parapet is sufficient for its intended function, which may include acting as a visual barrier, wind deflection, and a means of preventing equipment or debris from falling off the roof. A parapet height lower than this specified measurement may not meet safety standards and could compromise the structural design of the building. The selected height is supported by numerous safety guidelines that focus on both occupant safety and building longevity.