Walkways should be designed so that they are sloped enough to keep water from puddling, but not so steep to be difficult for some populations to use. >1% is preferred in grassy areas to minimize any standing water Designing walkways
> 25% slope Subject to erosion and much more difficult to build on. 10% slope Challenging to build on or use for outdoor activities. Structures like retaining walls, rip rap, or terracing are examples of retaining structures. Steeper slopes are more expensive to build on and will require more grading or retaining structures to keep the slopes stable.
Gentle slopes are easier to build on and more useful for recreation. The slope of a site can have a significant impact on its use. Where is slope percentage used? The slope of a site Angles are measured in degrees and are more commonly used in construction horizontal (in plan) rather than vertically.
