Penthouses must not exceed how many feet in height above the roof deck for buildings of other than Type I construction?

Penthouses in buildings categorized as other than Type I construction are regulated for height above the roof deck to ensure safety and compliance with building codes. In this context, the maximum allowable height for penthouses is set at 18 feet. This regulation is important as it helps to maintain the structural integrity of the building and minimize potential impacts such as wind loads and aesthetics within the urban environment.

The height limitation ensures that the additional structure does not exacerbate the building's vulnerability to elements and remains in harmony with the surrounding architecture, providing both functionality and visual coherence. Moreover, adhering to this maximum height contributes to fire safety and accessibility considerations, particularly in non-Type I constructions, which may have different fire resistance characteristics than Type I structures. Thus, the correct answer reflects industry standards aimed at ensuring safety and regulatory compliance for penthouses in these types of buildings.