Question

Underground excavations for carrying pipes, sewage etc. fall under which type?

(a) Traffic tunnels

(b) Hydropower tunnels

(c) Public utility tunnels

(d) Delivery tunnels

I had been asked this question during an interview for a job.

I'd like to ask this question from Tunnels and Their Types topic in chapter Tunnels of Engineering Geology

Answer 1

Right choice is (c) Public utility tunnels

The best explanation: Public utility tunnels include a variety of underground excavations made for specific purposes such as for disposal of urban waste (sewage tunnels), for carrying pipes, cables and supplies of oil, water etc.