Materials must be stored a minimum of what distance from the edge of the excavation?

The correct distance for storing materials from the edge of an excavation site is a minimum of 2 feet. This regulation is designed to ensure safety during excavation work. Storing materials too close to the edge can increase the risk of collapse or sliding, which poses a danger to workers and can lead to accidents. Maintaining this minimum distance creates a buffer zone that helps to stabilize the excavation's edge, thus reducing the likelihood of the stored materials compromising the integrity of the excavation.

The selection of 2 feet as a standard aligns with industry practices and safety guidelines, ensuring that workers have a safer working environment while also allowing for adequate space for machinery and tools that may be needed during the operation.