What is recommended when working with type "c" soil?

When working with type "C" soil, which is characterized as highly unstable and potentially hazardous for excavation work, the use of shoring is crucial. Type "C" soil includes loose, granular soils or soils with a high water content, which can lead to collapses during excavation without proper support.

Using shoring, which involves installing supports (such as braces or frames) to stabilize the sides of the excavation, greatly enhances safety by preventing soil collapse. The recommended ratios for shoring, such as 1 ½ to 1 slope, indicate that the excavation must be sloped at a safe angle to ensure stability. This practice is essential for worker safety and compliance with safety regulations.

Other recommendations that could be considered are often not appropriate for type "C" soil. For instance, minimizing drainage may lead to more water retention in the soil, increasing instability. Excavating deeper than needed could also be detrimental, as it does not address the inherent risks associated with the soil's characteristics. Similarly, installing additional piping without addressing the support needs of the excavation may further complicate stability and safety.