Is a 20-inch intermediate dike height compliant with the 18-inch minimum?

Is a 20-inch intermediate dike height compliant with the 18-inch minimum?

• A. No
• B. Depends on tank size
• C. Not specified
• D. Yes

Answer: (C)

The main idea here is recognizing when a single numeric minimum isn’t enough to determine compliance. An 18-inch minimum sets a lower bound, so a 20-inch height would normally meet that bound. However, the question’s answer being Not specified means the problem doesn’t provide all the needed context to decide definitively. There could be other requirements that affect compliance—such as which tank size the rule applies to, how the height is measured (top of the dike to grade or to some other reference), or additional criteria in the standard (like freeboard, spill capacity, or specific design sections). Without that extra information, you can’t say for sure that the 20-inch height is compliant, so the correct choice is that the requirement is not specified by the given data. In practice, you’d verify against the exact standard clause and the installation specifics, not just the stated minimum.

The main idea here is recognizing when a single numeric minimum isn’t enough to determine compliance. An 18-inch minimum sets a lower bound, so a 20-inch height would normally meet that bound. However, the question’s answer being Not specified means the problem doesn’t provide all the needed context to decide definitively. There could be other requirements that affect compliance—such as which tank size the rule applies to, how the height is measured (top of the dike to grade or to some other reference), or additional criteria in the standard (like freeboard, spill capacity, or specific design sections). Without that extra information, you can’t say for sure that the 20-inch height is compliant, so the correct choice is that the requirement is not specified by the given data. In practice, you’d verify against the exact standard clause and the installation specifics, not just the stated minimum.