

RCC Structures Design - Engineering
Q1: If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the prestressed beam is L, the upward uniform pressure will beA ![]() B ![]() C ![]() D ![]() E ![]() ANS:B - To find the upward uniform pressure exerted by the parabolic tendon on the prestressed beam, we need to consider the equilibrium condition. The total force exerted by the tendon must be balanced by an equal and opposite reaction force from the beam. Since the tendon is parabolic, we can consider it as a distributed load with varying intensity. The total force exerted by the tendon can be calculated by integrating the force distribution along its length. Since the tendon carries tension P, and assuming the tendon has a parabolic shape, the force at any point y along its length is proportional to the depth of the tendon at that point. The equation for the parabolic shape of the tendon can be given by: y=4h/L^2x(L−x) Where:
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