For earth that is 20 feet or more in height, what is the minimum crest width required?

The minimum crest width required for earth that is 20 feet or more in height is 5 feet. This is established in construction and engineering standards to ensure structural integrity and stability. A proper crest width is vital for various reasons, such as providing adequate support for the top of the embankment, reducing the risk of erosion, and allowing for safe access, which is essential for maintenance and inspections.

A wider crest can support better drainage which prevents water accumulation and reduces the risk of slope failure, making 5 feet the minimum requirement for earthworks of this height. The dimensions are set following best engineering practices to ensure the safety and longevity of the structure.