Best questions of diversion head works

  1. Draw a neat sketch of a diversion head work and name its various parts.
  2. Give brief explanation of each part.
  3. Explain the terms weir, barrage and dam.
  4. Point out the points of difference among, them.
  5. Enumerate various causes of failure of the weirs. Discuss each cause and suggest the remedies.
  6. Explain the various stages of river.
  7. Discuss the suitability of each stage in regard to the location of a diversion headworks.
  8. What are the points which should be considered while selecting the site for diversion headworks?
  9. Explain the Bligh’s creep theory for the design of impervious aprons on permeable foundations.
  10. What are limitations of this theory?
  11.  Expalin the Khosla’s findings which he conducts on the weirs that were designed according to Bligh’s theory but failed.
  12. Why some of the works designed according to Bligh’s theory did not fail while others failed?
  13. Explain Khosla’s method of independent variables.
  14. Explain the method of applying following corrections:

(i) For thickness of floor.

(ii) For inclination of floor, and (iii) Mutual interference of piles.

  1. Define the term exit gradient. What is its significance in regard to the weir design? 15.10. Compare Bligh’s theory with Khosla’s theory of seepage flow.
  2. In the design of vertical drop weir, enumerate the various elements that are required to be designed.
  3. Explain various steps in the design of weir wall.
  4.  Explain the term total energy line (T.E.L.). Give various formulae and steps, by which elevations of various elements in the weir design are fixed.
  5. Explain the terms:

(i) Launching apron.

(ii) Inverted filter.

(iii) Divide wall.

(iv) Log chute and

(v) Fish ladder.

6. What are various measures that control silt entry into the main canal at the head works? Explain with a sketch silt excluder.

7. Explain the terms silt ejector, undersluices, with the help of neat sketches.


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