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Which of the following is correct regarding Cement concrete pipes?

(a) They are corrosive

(b) The maintenance cost is high

(c) Unreinforced pipes are liable to tensile crack

(d) It is easy to repair them

The question was posed to me in an interview for job.

This intriguing question comes from Types of Pipes in section Conveyance and Distribution of Water of Environmental Engineering

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Right answer is (c) Unreinforced pipes are liable to tensile crack

For explanation: Cement concrete pipes are anti corrosive with low maintenance cost, difficult to repair and the unreinforced pipes are subjected to tensile cracks.

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