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← HistoryWhich consequence results when inadequate ashlar dressing occurs in the buttresses of Gothic cathedrals?
A)Wind uplift resistance decreases slightly
B)Tensile stress within flying buttresses rises✓
C)Shear stress on masonry elements lowers
D)Horizontal thrust on walls reduces acutely
💡 Explanation
Increased tensile stress results when poor ashlar dressing reduces precise stone fitting; this causes higher stress concentration because the load path becomes less uniform than intended, therefore point loads along the curvature dramatically magnifies stress rather than distributing properly.
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