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← TechnologyWhich outcome occurs when seismic loading exceeds rebar capacity?
A)Buckling failure, concrete spalling, collapse✓
B)Ductile bending prevents complete failure
C)Increased compressive strength is achieved
D)Elastic deformation, structure remains usable
💡 Explanation
Seismic loading exceeding rebar tensile strength initiates sectional yield, because of insufficient rebar. The mechanism of subsequent **compressive failure** causes concrete to spall and the structure to fully collapse; therefore buckling occurs, rather than elastic deformation.
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