What is the maximum slope on a finish grade?

The maximum slope on a finish grade is typically considered to be 50%. This means that for every 1 unit of vertical rise, there can be a horizontal run of 2 units. This steepness is often encountered in specific types of construction or landscaping, particularly where space is limited or drastic elevation changes are necessary.

A slope of 50% can accommodate the stability of soil and vegetation, which is crucial to prevent erosion and ensure proper drainage. It’s important to recognize that while steeper slopes can be challenging, they are sometimes necessary based on the grading requirements of a particular site.

The other options represent slopes that are less severe and, in some contexts, may be more commonly used; however, they do not reflect the maximum potential grade that can be achieved in certain construction scenarios. The choice of a maximum slope depends on various factors, including soil type, rainfall, and environmental considerations, but 50% is often cited as the upper threshold in many guidelines and best practices for finish grading.