If a trench is dug in compact sand, what is the required slope?

When excavating in compact sand, the appropriate slope helps ensure stability and safety for workers and surrounding structures. In this case, a slope of 1 1/2:1 is recommended for compact sand. This means that for every 1.5 units of horizontal distance, there should be 1 unit of vertical drop, which provides a gentle incline allowing the sand to remain stable while preventing collapses within the trench.

The selection of a 1 1/2:1 slope reflects the properties of compact sand, which can support a more gradual slope compared to less stable materials. This balance between safety and practicality is crucial in trenching operations, where ground materials are a determining factor in the necessary angle for excavation sides.

The other slope ratios are less suitable for compact sand, either being too steep or not adhering to recommended safety guidelines. A steeper slope would pose a greater risk for slumping or collapsing under certain conditions. Thus, the 1 1/2:1 slope aligns well with industry standards for working in this type of material, ensuring adequate safety measures are observed during excavation.