Final answer:
The diameter of the vertical storm drain for a roof with a maximum area of 29,000 square feet depends on factors like rainfall intensity and drainage method. However, generally for a roof of this size, a 12-inch diameter is typically suitable in standard conditions.
Step-by-step explanation:
The determination of the vertical storm drain and leader diameter is dependent on various factors such as the maximum projected roof area, the rainfall intensity, and the drainage method. There generally exists a calculation or chart that allows one to select the appropriate diameter based on these considerations. However, without specific contextual information such as intensity of the rainfall expected and the type of drainage method employed, it's challenging to definitively answer. Nonetheless, for a roof with a maximum area of 29,000 square feet, the drain diameter can typically range between 8 to 12 inches, depending on the aforementioned factors and local building regulations. This renders b) 12 inches as the most probable answer in standard conditions.
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