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assification of tunnels according to purpose, conveyance, material, position or alignment, shape and size of tunnels under different conditions.​

Answer»

ANSWER:

A TUNNEL MUST be completely enclosed on all sides ALONG the length. The types of tunnels are classified based on three aspects: Based on purpose (road, rail, utilities), Based on surrounding material (soft clay vs. hard rock ) & Submerged tunnels.



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