What is the primary hazard associated with excavations deeper than five feet?

The primary hazard associated with excavations deeper than five feet is the risk of cave-ins. As the depth of an excavation increases, the stability of the surrounding soil can decrease, leading to the potential for collapses that can bury workers. Populated areas, soil type, moisture levels, and other conditions significantly influence this risk.

Cave-ins pose a critical safety threat because they can occur suddenly and with little warning, resulting in severe injuries or fatalities. Proper safety measures, such as shoring, shielding, or sloping, are essential to protect workers in these environments. Recognizing the dangers presented by deeper excavations is crucial for ensuring the safety and health of all personnel involved in excavation work.