While designing paving systems, you must consider location. It rains DIFFERENTLY in California than Alabama. Each system can have a number of different soils, each draining and retaining water DIFFERENTLY. Lets take a deeper look into how rain events, annual precipitation and soil type effect permeable paving systems.
- Type I – Parts of CA, AK and HI with wet winters and dry summers.
- Type IA (least intense) – Pacific NW maritime region with wet winters and dry summers.
- Type II (most intense short duration rainfall) – Most of the U.S. not directly affected by ocean climates.
- Type III – Gulf of Mexico & Atlantic coast where tropical storms bring large 24-hour rainfall amounts