What is the maximum slope ratio for a mowed slope?

The correct answer is based on the typical guidelines for landscape management, specifically for mowed slopes. A slope ratio of 3:1 indicates that for every 3 units of horizontal distance, there is a 1 unit of vertical rise. This slope ratio is generally considered safe and manageable for mowing equipment and minimizes the risk of erosion and runoff, making it practical for maintenance purposes in landscaped areas.

Choosing a steeper slope, such as a 2:1 ratio or a 1:1 ratio, may pose challenges for mowing and increase the likelihood of erosion. Such slopes can be difficult to maintain and require more intensive management practices. A slope of 4:1 is more gradual and, while beneficial for certain types of vegetation, does not conform to the maximum slope typically maintained for mowed areas, where 3:1 strikes the necessary balance between maintainability and sustainability.

Thus, the 3:1 slope ratio is recognized as the maximum for mowed areas, ensuring effective maintenance without compromising safety or landscape integrity.