AL Runway Practice Questions - Alabama Runway Contractor Examination Exam

What is the main function of an underdrain system installed under or beside airfield pavement?

To heat the pavement in winter To intercept and remove subsurface water that would weaken base and subgrade To carry aircraft fuel spills to the runway end To replace surface crown drainage entirely

Correct Answer:

To intercept and remove subsurface water that would weaken base and subgrade

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