What is the minimum requirement for the angle of slope for Type B soil?

For Type B soil, the minimum requirement for the angle of slope is indeed 45 degrees. This is based on safety regulations that dictate how excavations must be managed to prevent collapses or cave-ins. Type B soil is characterized as having a medium level of cohesion and is capable of maintaining some slope, but not as steep as Type A soils, which are more stable.

Excavations in Type B soil can typically be sloped at a 1:1 ratio (one unit of horizontal distance for every unit of vertical height), which translates to a 45-degree angle. Adhering to this slope angle significantly reduces the risk of soil failure, thus protecting workers and equipment.

Understanding the properties of different soil types and the corresponding excavation angles is crucial for safety and compliance with regulations. Type A soil allows for steeper angles, while Type C soil, which has lower cohesion, would require a less steep angle. This knowledge helps ensure proper excavation practices are followed to maintain safety on construction sites.