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← HistoryWhich outcome immediately follows when compressive stress overcomes the shear strength within vertically stacked Inca stone masonry?
A)Progressive spalling around the base
B)Shearing along mortarless interface✓
C)Dilation induced hydrostatic fracture
D)Retrofitting via Quipu structural analysis
💡 Explanation
Shearing occurs because forces exceed the material's resistance to slippage along a plane (known as shear strength), therefore stacked stones slide relative to each other rather than experiencing tension failure or fracturing due to confinement.
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