General Contractor Practice Exam

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What is the maximum vertical distance allowed between headers when building multi-wythe masonry walls?

12 inches
18 inches
24 inches
30 inches

The correct answer is: 24 inches

The maximum vertical distance allowed between headers in multi-wythe masonry walls is 24 inches. This specification is essential in ensuring that the structural integrity of the wall is maintained. By limiting the distance between headers, the construction helps promote even load distribution and stability across the wall height. In masonry construction, headers are the bricks or blocks laid flat to tie or bond the wythe layers together, and maintaining a consistent spacing helps prevent issues that may arise from shifting or differential settlement. The 24-inch limit is a common standard in building codes and practices, offering a balance between construction efficiency and structural reliability. Other distances mentioned (like 12, 18, or 30 inches) may not provide the necessary structural support or could complicate the construction process, making it important to adhere to the established 24-inch guideline for headers in masonry walls.