North Carolina Building Contractor License Practice Exam

What is the maximum height of a masonry pier used in a seismic zone?

1. 10 feet

2. 12 feet

3. 15 feet

4. 18 feet

The correct answer is: 12 feet

The maximum height of a masonry pier used in a seismic zone is typically limited to ensure structural integrity during seismic events. This limit helps to mitigate the risk of failure caused by lateral forces generated during an earthquake. When considering the height of masonry piers, engineers and building codes establish guidelines that account for the material's load-bearing capacity, stability, and flexibility needed to withstand seismic activities. A height of 12 feet is in alignment with commonly adopted building codes which escape potential structural failure limits while still being practical for construction and design. In seismic zones, maintaining a balanced design that accommodates both vertical and lateral loads is crucial. This maximum height is also tied to the principles of good engineering practice and the structural behavior of masonry under stress, particularly in a seismic context. Choosing a height beyond the limit may compromise the pier’s effectiveness, leading to potential hazards in the event of an earthquake.