AL Pipelines Practice Questions - Alabama Pipelines Contractor Examination Exam

Why is an aboveground tank often built on an engineered ringwall foundation with compacted fill inside?

It supports the shell perimeter uniformly and controls differential settlement of the tank bottom It eliminates the need for a tank bottom plate It increases the tank's rated pressure It replaces the requirement for secondary containment

Correct Answer:

It supports the shell perimeter uniformly and controls differential settlement of the tank bottom

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