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What type of cross drainage work is provided when the canal runs below the drain, with FSL of canal well below the bed of the drain ?
  • a)
    Aqueduct
  • b)
    Super passage
  • c)
    Level crossing
  • d)
    Siphon aqueduct
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
What type of cross drainage work is provided when the canal runs below...
If bed level of canal is sufficiently above the HFL of the drain, an aqueduct is the right choice. Sometimes bed level of canal may be little below the HFL of drain so that water flows under symphonic action. This structure is known as aqueduct siphon. If bed level of the drain is sufficiently above the canal FSL, a super passage may be constructed. If the canal FSL is little above bed level of drain to allow symphonic action, the structure is called Canal Siphon. Aqueduct or super-passage type of drainage works are used when high flood discharge is large and continues for a sufficient time. A level crossing is used when the canal water and drain water are allowed to intermingle with each other. This is adopted when high flood drainage discharge is short lived.
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What type of cross drainage work is provided when the canal runs below...
Cross Drainage Work: Super Passage

A super passage is a type of cross drainage work provided when the canal runs below the drain, with FSL (Full Supply Level) of canal well below the bed of the drain. It is a structure designed to carry the drain across the canal.

Design and Construction

The design of a super passage involves providing a suitable foundation and superstructure to carry the load of the drain. The foundation may consist of piles or open foundations depending on the soil conditions. The superstructure may be made of reinforced concrete or masonry, depending on the size of the structure.

The construction of a super passage involves excavating the canal bed to the required depth and constructing the foundation. The superstructure is then constructed on top of the foundation. The drain is then laid on top of the superstructure.

Advantages of Super Passage

Some of the advantages of a super passage include:

1. It is a cost-effective solution for crossing a canal.

2. It requires less maintenance than other types of cross drainage works.

3. It is a safe and reliable structure for carrying the drain across the canal.

Conclusion

A super passage is a suitable type of cross drainage work when the canal runs below the drain, with FSL of canal well below the bed of the drain. It is a cost-effective and reliable solution for crossing a canal.
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What type of cross drainage work is provided when the canal runs below the drain, with FSL of canal well below the bed of the drain ?a)Aqueductb)Super passagec)Level crossingd)Siphon aqueductCorrect answer is option 'B'. Can you explain this answer?
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