Question

Which of the following guideline is not recommended for the choice of lining when the bed width of the canal is up to 3 m?

(a) Single burnt clay tile lining or brick lining

(b) PCC slab lining

(c) Flexible membrane lining with adequate earth/tile cover

(d) In-situ cement concrete lining in bed as well as on sides

I have been asked this question in final exam.

My doubt stems from Canal Lining in portion Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

Correct answer is (d) In-situ cement concrete lining in bed as well as on sides

Easiest explanation: The choice of suitable lining for different size of a canal depends on canal slopes and alignments, size and importance of canal, the climate of the area, initial expenditure, etc. In-situ cement concrete lining in bed and on sides is generally preferred for canals when bed width is greater than 8 m.