GATE CE 2015 Set 1 — Question 43
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Structural Engineering → RC Fundamentals & Beams → Limit State Method
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Question
Consider the singly reinforced beam section given below (left figure). The stress block parameters for the cross-section from IS:456-2000 are also given below (right figure). The moment of resistance for the given section by the limit state method is ___________ kN-m.

Correct answer
42 to 43
Solution
1.Calculate the area of steel: .
2.Determine the depth of the neutral axis (): .
3.Check for limiting depth of neutral axis (): . Since , it is an under-reinforced section.
4.Calculate the moment of resistance (): .
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