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Q: When an economical canal cross-section is formed partly in cutting and partly in filling, such that the quantity of earth in cutting is equal to the quantity of earth in filling, the depth of cutting under that situation is known as __________ .
  • A. Economical depth
  • B. Balancing depth
  • C. Critical depth
  • D. Uniform depth
Correct Answer: Option B - Balancing depth–A canal section will be economical when the earth work involved at a particular section has an equal amount of cut and fill. Usually a canal section has a part in cutting and part in filling. If the amount of cut is equal to the amount of fill, it has to be paid for once only.
B. Balancing depth–A canal section will be economical when the earth work involved at a particular section has an equal amount of cut and fill. Usually a canal section has a part in cutting and part in filling. If the amount of cut is equal to the amount of fill, it has to be paid for once only.

Explanations:

Balancing depth–A canal section will be economical when the earth work involved at a particular section has an equal amount of cut and fill. Usually a canal section has a part in cutting and part in filling. If the amount of cut is equal to the amount of fill, it has to be paid for once only.