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In limit state design, permissible bond stress in the case of deformed bars is more than in the plain bars by what percentage?

In limit state design, permissible bond stress in the case of deformed bars is more than in the plain bars by what percentage? Correct Answer 60

Explanation:

Design Bond stress for different Grades of concrete 

  M15 M20 M25 M30 M35 M40 M45 M50
LSM - 1.2 1.4 1.5 1.7 1.9 1.9 1.9
WSM 0.6 0.8 0.9 1 1.1 1.2 1.3 1.4


The above value of bond stress is increased by 60% for deformed bars in tension and a further increase of 25% is made for bars in compression

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