Which risk increases when a post-tensioned concrete beam experiences sudden tendon rupture during construction?

💡 Explanation

When a tendon ruptures suddenly, energy release accelerates stress concentrations around anchorages because the force distribution changes abruptly. Therefore concrete spalling near anchorages results, rather than excessive deflection, chloride ingress or reduced fire resistance which are driven by other environmental or design factors.

• Which failure mode emerges when sustained engine knocking subjects an internal combustion engine's crankshaft to cyclical stress exceeding endurance limits?
• Which outcome occurs when differential settlement induces unintended eccentricity in a reinforced concrete column?
• Which risk increases when exceeding a residential split-phase circuit's 80% continuous load limit?
• Which outcome is amplified when a hydraulic valve experiences internal component resonance?
• Which outcome results in a three-phase power distribution transformer when hysteresis losses increase excessively due to elevated operating temperatures?
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