AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

A gravity tunnel invert is elevation 214.80 feet at Station 12+00 and elevation 212.40 feet at Station 16+00. What is the invert slope?

0.24 percent downward 0.60 percent downward 1.20 percent downward 2.40 percent downward

0.60 percent downward

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