Skip to main content
Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Selection of Site for Cross Drainage Works

By: Haseeb Jamal / On: Oct 14, 2017 / Factors Affecting, Drainage
Selection of Site for Cross Drainage Works
 
 

Selection of suitable site for cross drainage works

The factors which affect the selection of suitable type of cross drainage works are:

  • Relative bed levels and water levels of canal and drainage
  • Size of the canal and drainage.

The following considerations are important

  • When the bed level of the canal is much above the HFL of the drainage, an aqueduct is the obvious choice.
  • When the bed level of the drain is well above FSL of canal, super passage is provided.
  • The necessary headway between the canal bed level and the drainage HFL can be increased by shifting the crossing to the downstream of drainage. If, however, it is not possible to change the canal alignment, a siphon aqueduct may be provided.
  • When canal bed level is much lower, but the FSL of canal is higher than the bed level of drainage, a canal siphon is preferred.
  • When the drainage and canal cross each other practically at same level, a level crossing may be preferred. This type of work is avoided as far as possible.

Factors which influence the Selection of Cross Drainage Works

  1. The considerations which govern the choice between aqueduct and siphon aqueduct are:
  2. Suitable canal alignment
  3. Suitable soil available for bank connections
  4. Nature of available foundations
  5. Permissible head loss in canal
  6. Availability of funds

Compared to an aqueduct a super passage is inferior and should be avoided whenever possible. Siphon aqueduct is preferred over siphon unless large drop in drainage bed is required.

 

Comments

siriusharry5s5 Apr 02, 2019

We must give accurated selection so it will bring best result windows 10

jacobarch May 03, 2019

Is there water moving over the incline or down the slope? Has disintegration been regular on this incline? Are there little or huge channels on the incline? Where is the water going in the scene? essay writing help - australianessay.com, You can't give the water a chance to keep running on a slant. Be a controlled crack and the slant will be considerably more steady.

Subscribe to our Newsletter

Stay informed - subscribe to our newsletter.
The subscriber's email address.

Search AboutCivil

Related Content