Which mechanical outcome occurs when prestressing force is suddenly lost to a reinforced concrete beam?

💡 Explanation

When prestressing force is lost, the compressive stress induced by prestressing is removed because the steel tendons relax, causing the initial tensile cracking resistance contributed by the prestress to diminish. Therefore reduced tensile cracking resistance results,rather than increased shear, deflection, or creep capacity which require the prestress to be effectively maintained.

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