Pervious concrete is placed over a gravel sub base of ____ inches or more that provides a storage reservoir for rainwater, allowing it to percolate into the ground.

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Pervious concrete is typically placed over a gravel sub base of 12 inches or more, which acts as a storage reservoir for rainwater, facilitating its percolation into the ground. This design is crucial for managing stormwater and reducing runoff.

Pervious Concrete Is Placed Over a Gravel Sub Base of ____