Intermediate dikes shall not be less than how many inches in height?

Intermediate dikes shall not be less than how many inches in height?

• A. 18
• B. 12
• C. 15
• D. 20

Answer: (A)

This question focuses on ensuring adequate secondary containment within a dike system so a spill stays contained. Intermediate dikes provide a second barrier inside the outer dike, and their height must be enough to hold a spill that could occur between the inner and outer boundaries. The minimum height specified to achieve this is 18 inches; lower heights wouldn’t reliably contain typical spill depths, while taller heights would meet the need but aren’t the minimum. So the required minimum height is 18 inches.

This question focuses on ensuring adequate secondary containment within a dike system so a spill stays contained. Intermediate dikes provide a second barrier inside the outer dike, and their height must be enough to hold a spill that could occur between the inner and outer boundaries. The minimum height specified to achieve this is 18 inches; lower heights wouldn’t reliably contain typical spill depths, while taller heights would meet the need but aren’t the minimum. So the required minimum height is 18 inches.