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← HistoryWhich structural weakness, common in medieval timber-framed buildings, arises from uneven settling of the foundation?
A)Shear stress within the mortise joints
B)Buckling of the main load-bearing posts
C)Lateral displacement via diagonal bracing failure
D)Racking deformation throughout the frame✓
💡 Explanation
When a medieval timber-framed building experiences uneven settling, racking deformation occurs because the frame distorts out of square due to differential vertical movement. Therefore, racking is the primary weakness, rather than shear, buckling or bracing failure which arise from different loading conditions.
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