When a subsurface area is larger than 100 square feet, how is the drainpipe size determined?

Name: When a subsurface area is larger than 100 square feet, how is the drainpipe size determined?
Brand: Quizplus
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Quizplus · Accepted Answer

The size of the drainpipe for a subsurface area larger than 100 square feet is determined similarly to calculations for roof drains, which typically involve considering the area's square footage and the maximum expected rate of rainfall, rather than simply adjusting the pipe size based on the area's size alone.

When a Subsurface Area Is Larger Than 100 Square Feet