In an occupied trench, how much water may accumulate?

In an occupied trench, how much water may accumulate?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: (A)

Keeping an occupied trench dry is essential because water weakens the soil and increases the risk of a cave-in while people are inside. Saturated soil loses strength, hydrostatic pressure pushes on the walls, and standing water creates slippery surfaces and potential drowning hazards if a collapse occurs. To protect workers, any accumulating water must be pumped out and drainage controlled, so no water is allowed to collect in an occupied trench.

Keeping an occupied trench dry is essential because water weakens the soil and increases the risk of a cave-in while people are inside. Saturated soil loses strength, hydrostatic pressure pushes on the walls, and standing water creates slippery surfaces and potential drowning hazards if a collapse occurs. To protect workers, any accumulating water must be pumped out and drainage controlled, so no water is allowed to collect in an occupied trench.