AL Drainage Irrigation Practice Questions - Alabama Drainage, Irrigation And Flood Control Contractor Examination Exam

During earthwork, when is a proof roll typically performed?

Only after final landscaping is complete On subgrade or base to detect soft, yielding, or unstable areas before placing pavement or structures Only when the engineer requests a concrete cylinder test After asphalt has fully cooled

Correct Answer:

On subgrade or base to detect soft, yielding, or unstable areas before placing pavement or structures

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