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Which 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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