Computer · Irrigation Engineering
Which of the following is correct about the identification of cohesive non-swelling soil (CNS) material for lining of canals on an expansive soil?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The soil with liquid limit less than 30% and plasticity index less than 15% is considered as suitable.
- 2The CNS material has gravel content greater than 30%.
- 3In exceptional cases, swelling pressure of CNS soil less than 10 kN/m2 is acceptable.✓
- 4The permissible deformation of the CNS layer is 50 mm.
Correct answer
In exceptional cases, swelling pressure of CNS soil less than 10 kN/m2 is acceptable.
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