If a roof is used for a purpose other than weather protection, the vent extensions should extend above the roof by at least ____ feet.

When a roof serves purposes beyond mere weather protection, such as a rooftop garden, terrace, or other uses, the vent extensions require additional height for proper ventilation and to prevent issues arising from condensation or other factors that may affect air quality or occupancy. The correct height for these vent extensions is at least 7 feet above the roof level. This height ensures that any potential obstructions, such as equipment or people on the roof, do not interfere with the function of the vents. It also helps in minimizing the chances of moisture buildup or negative impacts from the surrounding environment. Adequate ventilation is critical in maintaining the structural integrity of the building and ensuring the safety and comfort of its occupants.