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Which consequence results from exceeding granite's compressive strength in ancient Incan mortarless wall construction?

A)Stones vibrate excessively and shift
B)Internal shearing creates crack propagation
C)Wall blocks gradually experience creep
D)The interlocking joints undergo thermal expansion

💡 Explanation

Internal shearing creates crack propagation because compressive forces overcome the grain boundaries along weakest axis, initiating fracture via intragranular cleavage. Therefore cracks spread, rather than the stones vibrating or creeping under the loads if their compression limits were lower.

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