What is the maximum slope angle for Type A soil?

Type A soil is classified as cohesive soil, which has a high degree of stability and can support steeper excavation slopes than other soil types. The maximum slope angle for Type A soil is typically determined to be 53 degrees. This slope angle is based on the engineering principles and guidelines established for safe excavation practices.

Type A soil includes materials like clay and has resistance to lateral forces, allowing for this steeper angle in comparison to Type B and Type C soils, which have lower stability and require shallower slopes to prevent collapse during excavation. Therefore, when excavating in Type A soil, adherence to the 53-degree maximum slope angle is crucial to ensure worker safety and prevent soil failure.