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What is the biggest advantage of boulder lining?

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+1 vote
in Irrigation Engineering by (75.2k points)
What is the biggest advantage of boulder lining?

(a) Impervious Lining

(b) Dry Stone Lining

(c) Dhamalis

(d) Pervious Lining

This question was posed to me during an interview.

Query is from Hard Surface or Rigid Linings in section Lining of Irrigation Canals and its Economics of Irrigation Engineering

1 Answer

0 votes
by (106k points)
The correct choice is (d) Pervious Lining

To explain I would say: As the boulder lining is a pervious lining, it allows free flow of water from submerged or saturated subgrade into the canal. Moreover, this lining does not need any drainage arrangements. This lining can be used in areas where water table is higher than FSL of the canal.

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