General Contractor Practice Exam

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What type of fastener is used on a masonry rod?

8" o.c.
10" o.c.
12" o.c.
14" o.c.

The correct answer is: 12" o.c.

The correct answer indicates that the appropriate spacing for the fasteners on a masonry rod is 12 inches on center (o.c.). This measurement is crucial in construction as it ensures that fasteners are placed at intervals that provide sufficient support and stability for the structure being built. Using fasteners too far apart may result in insufficient holding capacity, leading to structural weaknesses, while spacing them too closely together can result in material waste and may not allow for adequate movement or expansion of the materials involved. In masonry applications specifically, the 12-inch spacing offers a balance between strength and material efficiency, accommodating the unique properties of masonry which can be heavy and require strong anchoring. Other options such as 8", 10", and 14" o.c. could be inappropriate as they might either not provide the necessary support or create complications in maintaining uniformity and alignment in the structure. Therefore, 12" o.c. is the most suitable choice for attaching fasteners on masonry rods.