Minimum Clear Cover Required For The Design Of Water Tank
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The minimum clear cover required for the design of a water tank in severe exposure conditions is-
- 50 mm
- 25 mm
- 45 mm
- 30 mm
Answer: C. 45 mm
Table of content
The minimum clear cover required for the design of a water tank in severe exposure conditions is 45 mm.
Solution
As per IS 3370, the nominal/clear cover provided to a water tank depends on the exposure conditions. To prevent the reinforcement from corrosion, a layer of concrete should be there in reinforced concrete structures.
Exposure Conditions |
Minimum concrete grade |
Nominal cover |
Mild |
M20 |
20 mm |
Moderate |
M25 |
30 mm |
Severe |
M30 |
45 mm |
Very severe |
M35 |
50 mm |
Hence, the minimum clear cover required for the design of a water tank in severe exposure conditions is 45 mm.
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