Which consequence results when a pre-stressed concrete column's tensioning cable corrodes under sustained load?

💡 Explanation

Reduced cable area lowers the resisting moment, so elastic instability via Euler's formula causes the column's critical buckling load to decrease significantly. Therefore, buckling risk climbs considerably, rather than shear strength rising when steel mass declines.

• Which symptom indicates internal leakage past the spool of a hydraulic directional control valve?
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• Which risk increases in a three-phase power transformer cooled by oil when under-sized circuit breakers fail to trip during an overload?
• Which outcome occurs when excessive dither in a servo valve controlling a hydraulic actuator generates frequency close to the natural resonance?
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• Which constraint is imposed due to excessive refrigerant overcharging?