North Carolina Building Contractor License Practice Exam

A standard glass masonry unit is how many inches thick?

1. 4

2. 6

3. 8

4. 12

The correct answer is: 8

A standard glass masonry unit is generally recognized to be 8 inches thick. This thickness matches the common dimensions used for many types of masonry, making it an essential measurement in construction practices involving glass blocks. Glass masonry units are utilized not only for functional purposes—like creating walls but also serve aesthetic uses, offering light transmission and design versatility. The adoption of the 8-inch thickness in standard practices allows for consistency in building regulations and construction methods, leading to more predictable performance regarding structural integrity and insulation properties. In contrast, while other thicknesses such as 4, 6, and 12 inches may exist in different contexts or specialty applications, they do not represent the standard size that practitioners are most likely to encounter in usual circumstances. Hence, understanding that the 8-inch measurement is the standard helps in applying it correctly in various building scenarios.