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1880 Recommended Grading Slopes - Surface Water Control and Landscaping - Image Text: Driveway > 1 > 48 > minimum slope (non-permeable surface) > 12 > minimum slope (permeable surface) |
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1880 Recommended Grading Slopes - Surface Water Control and Landscaping - Image Text: Driveway > 1 > 48 > minimum slope (non-permeable surface) > 12 > minimum slope (permeable surface) |
Image courtesy of Carson Dunlop. To purchase images, go to CarsonDunlop