AL Runway Practice Questions - Alabama Runway Contractor Examination Exam

Under FAA Item P-152, what is the primary purpose of proof-rolling a prepared subgrade before placing base or pavement?

To increase the asphalt binder grade To locate soft spots, pumping, or unstable areas that need undercutting or rework To establish runway magnetic azimuth To cure freshly placed concrete

Correct Answer:

To locate soft spots, pumping, or unstable areas that need undercutting or rework

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