Geoscience Reference
In-Depth Information
•
The actual thickness should be based on permeability of cover material and more
permeable materials underlying, head of water and acceptable seepage loss.
•
In canals allowance should be made for scour effect.
Table 15.27
Clay blanket thickness for various depths of water
(Nelson, 1985).
Water depth (m)
Thickness of blanket (mm)
3.0
300
<
3.0 to 4.0
450
4.0 to 5.0
650
5.0 to 6.0
800
6.0 to 7.0
950
7.0 to 8.0
1150
8.0 to 9.0
1300
9.0 to 10.0
1500
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