Question

Which type of lining is only used for lining the side slopes of the canal?

(a) Shotcrete Lining

(b) Dry Stone Lining

(c) Asphaltic Concrete Lining

(d) Cement Concrete Lining

I have been asked this question in a dream while sleeping

Asked question is from Hard Surface or Rigid Linings in portion Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

Correct choice is (b) Dry Stone Lining

For explanation: This type of lining is only used for lining the side slopes of the canal by proper placing and packing of stones, either after laying a filter paper or not, depending on the soil requirement. Therefore this lining does not help in preventing the seepage losses but helps to maintain the shape of the canal, hence reducing the maintenance cost.