Cracks in buildings due to atmospheric drying of moisture in building materials cause:
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A.
structural cracks
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B.
shrinkage cracks
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C.
thermal cracks
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D.
settlement cracks
Correct Answer:
B. shrinkage cracks
Explanation:
The correct answer is shrinkage cracks.
Shrinkage cracks in buildings are primarily caused by the loss of moisture from building materials as they dry out over time. This atmospheric drying leads to a reduction in the volume of materials like concrete, mortar, or plaster, creating internal tension that results in visible cracks. Unlike structural cracks caused by heavy loads or settlement cracks from foundation movement, shrinkage cracks are a result of the natural curing and drying process. Proper curing techniques and the use of control joints can help minimize these occurrences during construction.
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