13.1 Canal Regulation

13.2 Canal Regulation Works

13.3. Alignment of the off-taking channel

3

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.

Example 13.1

(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

(corrected)

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.