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A ___________ consists of a watertight pipe of diameter about 250 mm to 300 mm.

(a) Hopper

(b) Grout

(c) Bucket

(d) Tremie

I got this question during an interview.

This intriguing question originated from Placing of Concrete topic in portion Cement Concrete Construction of Construction & Building Materials

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Right choice is (d) Tremie

Explanation: The pipe extends from the level of working platform to the lowest point where concrete is to be deposited. The bottom of the Tremie is provided with the concrete block which is forced out when concrete starts.

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