What is one major rule regarding heavy machinery around excavations?

Keeping heavy machinery at least 2 feet away from the edge of an excavation is essential to prevent potential collapses and ensure the safety of workers. Whenever heavy equipment is operated near an excavation, the weight and vibrations from the machinery can destabilize the soil, increasing the risk of a cave-in. By maintaining a safe distance, the stability of the excavation's edge can be preserved, minimizing hazards for workers in and around the site. This distance allows for a buffer zone that protects both the equipment operators and those working in the excavation from potential accidents caused by ground failure.