One Inch Per Foot Slope

The best way to explain a 1 inch per foot slope would be to examine the picture above. The brown polygon or four sided object is 12 inches wide. At one end we have 6 inches and on the other end we have 7 inches.

For every 12 inches of horizontal distance (right to left), it will drop 1 inch in vertical distance (up and down).

Example: If I had a 10 foot sidewalk with a 1:12 slope, it would drop 10 inches in 10 feet. If I had a 15 foot driveway, it would slope 15 inches to maintain the same slope.

Slopes like these provide good drainage during rainstorms and prevent water from ponding up and becoming a problem.

Back To Sloping Public Walkways