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The average permissible stress in bond for plainbars in tension is
- a)Increased by 10% for bars in compression
- b)Increased by 25% for bars in compression
- c)Decreased by 10% for bars in compression
- d)Decreased by 25% for abrs in compression
Correct answer is option 'B'. Can you explain this answer?
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The average permissible stress in bond for plainbars in tension isa)In...
Permissible Stress in Bond for Plain Bars in Tension
The permissible stress in bond is the maximum stress that can be applied to the bond between the reinforcing steel and the surrounding concrete without causing it to fail. This stress is dependent on several factors, including the type of steel, the strength of the concrete, and the type of bond used.
Effect of Compression on Permissible Stress in Bond
When a plain bar is placed in compression, the bond between the steel and concrete is reduced due to the crushing of the concrete around the bar. As a result, the permissible stress in bond decreases. Conversely, when a plain bar is placed in tension, the bond between the steel and concrete is improved due to the development of friction along the bar. This results in an increase in the permissible stress in bond.
Answer: Option B
According to the question, the average permissible stress in bond for plain bars in tension is increased by 25% for bars in compression. This means that if a plain bar is subjected to both tension and compression, the permissible stress in bond will be higher than if it was subjected to tension alone. This is because the increase in friction along the bar due to tension will offset some of the reduction in bond strength due to compression.
Conclusion
In summary, the permissible stress in bond for plain bars in tension is increased by 25% for bars in compression. This is due to the development of friction along the bar in tension, which offsets some of the reduction in bond strength due to compression.
The permissible stress in bond is the maximum stress that can be applied to the bond between the reinforcing steel and the surrounding concrete without causing it to fail. This stress is dependent on several factors, including the type of steel, the strength of the concrete, and the type of bond used.
Effect of Compression on Permissible Stress in Bond
When a plain bar is placed in compression, the bond between the steel and concrete is reduced due to the crushing of the concrete around the bar. As a result, the permissible stress in bond decreases. Conversely, when a plain bar is placed in tension, the bond between the steel and concrete is improved due to the development of friction along the bar. This results in an increase in the permissible stress in bond.
Answer: Option B
According to the question, the average permissible stress in bond for plain bars in tension is increased by 25% for bars in compression. This means that if a plain bar is subjected to both tension and compression, the permissible stress in bond will be higher than if it was subjected to tension alone. This is because the increase in friction along the bar due to tension will offset some of the reduction in bond strength due to compression.
Conclusion
In summary, the permissible stress in bond for plain bars in tension is increased by 25% for bars in compression. This is due to the development of friction along the bar in tension, which offsets some of the reduction in bond strength due to compression.
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The average permissible stress in bond for plainbars in tension isa)Increased by 10% for bars in compressionb)Increased by 25% for bars in compressionc)Decreased by 10% for bars in compressiond)Decreased by 25% for abrs in compressionCorrect answer is option 'B'. Can you explain this answer?
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