What is the minimum height that a parapet must extend when a roof slopes toward it at a slope greater than 2:12?

The minimum height that a parapet must extend when a roof slopes toward it at a slope greater than 2:12 is 30 inches. This requirement is established to enhance safety by providing adequate protection against falls and to prevent objects from rolling off the roof. A 30-inch parapet height is generally considered sufficient to ensure that individuals working or walking near the edge of the roof are protected from potential hazards.

In the context of building codes and safety regulations, adhering to this minimum height is crucial in maintaining not only safety standards but also compliance with local building regulations. A parapet of this height allows for effective deterrence against accidents, especially relevant in commercial buildings where roof access may occur. While higher parapet heights may offer additional safety, the 30-inch requirement reflects a balance between safety and practicality in typical scenarios.