Which of the following is correct regarding non-structural cracks that do not damage walls?
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A.
As a result, extensive cracks occur in foundations, slabs, etc.
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B.
They are caused by environmental variations on building materials.
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C.
It is generally very difficult to repair and fix them.
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D.
They are caused by environmental changes on building materials.
Correct Answer:
D. They are caused by environmental changes on building materials.
Explanation:
The correct answer is They are caused by environmental variations on building materials.
Non-structural cracks are primarily aesthetic issues that do not compromise the stability or safety of a building's framework. These types of cracks typically develop due to environmental factors, such as temperature fluctuations and moisture changes, which cause building materials to expand and contract. Unlike structural cracks, which may indicate foundation failure or overloading, non-structural cracks are generally shallow and can be easily addressed with surface repairs. They are a common occurrence in many structures as materials settle and react to the surrounding climate over time.
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