What is the maximum allowable height of a spoil pile alongside an excavation when using OSHA's timber shoring charts?

The maximum allowable height of a spoil pile alongside an excavation, when using OSHA's timber shoring charts, is indeed two feet. This height is established to maintain safety by preventing excessive load and pressure on the sides of the excavation, which can compromise the stability of the walls and increase the risk of cave-ins. A spoil pile that exceeds two feet has the potential to create a hazardous situation, as the soil's gravitational force could contribute to movement and collapse within the excavation site. Maintaining the spoil pile within this limit allows for safe operations and ensures that workers are protected from hazards associated with unstable soil conditions. Understanding this limit is crucial for effective excavation safety practices and compliance with OSHA regulations.