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A uniform beam of length \(2L\) and flexural rigidity \(EI\) is fixed at both the ends. What is the moment required at the centre of the span for unit rotation?

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Remember the beam stiffness formulas: \[ \boxed{k=\frac{4EI}{L}} \] for a member fixed at the far end. If two identical members meet at a joint, their stiffnesses add: \[ k_{\text{joint}}=k_1+k_2. \]

Updated On: Jul 23, 2026

\(\dfrac{2EI}{L}\)
\(\dfrac{4EI}{L}\)
\(\dfrac{6EI}{L}\)
\(\dfrac{8EI}{L}\)

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The Correct Option is D

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A uniform beam of length \(2L\) and flexural rigidity \(EI\) is fixed at both the ends. What is the moment required at the centre of the span for unit rotation?

Show Hint

The Correct Option is D

Solution and Explanation

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