Which of the following CANNOT be considered as a hard surface lining of the canal?

Which of the following CANNOT be considered as a hard surface lining of the canal?

Right Answer is:

Soil cement lining

SOLUTION

Canal lining:-  An irrigation canal is said to be lined when the bed and sides of a canal are protected by means of an impervious or fairly impervious material of sufficient strength. The necessity for lining a canal is felt when any one of the following requirements has to be met

  1. Canal lining controls seepage
  2. Canal lining increases the capacity of canals
  3. Canal lining is an important anti-water- logging measure.
  4. Canal lining increases commanded area for irrigation.
  5. Canal lining increases available head for power generation.
  6. Canal lining makes the canal section stable.

The suitability of the lining material is decided by:

  1. Economy
  2. Structural stability
  3. Durability
  4. Repair-ability
  5. Impermeability
  6. Hydraulic efficiency
  7. Resistance to erosion.

The principal types of lining are as follows:

  1. Concrete lining,
  2. Shotcrete lining,
  3. Precast concrete lining,
  4.  Lime concrete lining,
  5. Stone masonry lining,
  6. Brick lining,
  7. Boulder lining,
  8. Asphaltic lining, and
  9. Earth lining.
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