Which of the following equation is used to compute deflections of unilinear method?

Which of the following equation is used to compute deflections of unilinear method? Correct Answer βL2M/EcIt

The revised American code considers the bilinear character of the load deflection characteristics by incorporating a suitable effective value of the flexural rigidity in the unilinear formula, In the Unilinear method, the deflections are computed by a simple equation of the form A = βL2M/EcIt, a = maximum deflection, L = effective span, M = maximum moment in the beam, Ec = modulus of elasticity of concrete, Ic = second moment of area equivalent cracked moment, β = constant.

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