13.1 Canal Regulation
13.2 Canal Regulation Works
13.3. Alignment of the off-taking channel
The main functions of a Head Regulator :
13.5. Design of Cross Regulator and Head RegulatorCrest Levels.
Water-way
Conditions of flow for design.
Downstream Floor Level or Cistern Level.
Length of d/s Floor.
Cut-offs are provided as given below :
Total floor Length.
Uplift Pressures and Floor Thicknesses.
Protection Works.
(A) Design of Cross Regulator
Provide Crest at R.L. 207.5 m.
Provide 5 bays of 8.0 m eachProvide 4 piers of 1.5 m
Hence, prove the cistern ord/s floor at R.L. 207.3 m.
DIVERSION HEADWORKS
Vertical cut-offs
Total Floor Length from Exit Gradient Considerations
Calculations for Uplift pressures
Floor Thicknesses : D/S Floor
Provide 1.4 m.
U/s Floor.
Provide 0.8 m.
Upstream Protection
Downstream Protection
Bed Level of Distributary
Hence keep the crest of Head Regulator at RL 208.1 m.
R.L. of cistern
The bottom level of u/s cutoff
The bottom of d/s cut-off
Total Floor Length from Exit Gradient Considerations
Hence, Provide d/s floor length = 14 m.
Calculation for Uplift Pressures
(corrected)
(corrected)
Floor Thickness
Provide 1.4 m.
Provide 1.2 m.
Provide 1 m.
U/s Floor.
U/s Protection.
D/s Protection
Provide 0.8 m.