Coastal and Floodplain Construction Inspector's Practice Exam

What is the function of breakaway walls in V zone construction?

1. To support the structure

2. To allow flood waters to flow through

3. To protect the ground beneath

4. To prevent wind damage

The correct answer is: To allow flood waters to flow through

The function of breakaway walls in V zone construction is indeed to allow flood waters to flow through. These walls are designed to collapse under the pressure of significant floodwaters, minimizing damage to the structure and ensuring that the main building remains intact and capable of withstanding the forces associated with flooding. This design is crucial because it helps to reduce the risk of structural failure, which could occur if floodwaters are trapped against a solid wall. By permitting water to pass freely, breakaway walls aid in maintaining the integrity of the overall structure while also reducing potential debris impact from flooding. They play an important role in complying with regulations intended to protect structures in coastal flood zones, where both flooding and strong winds can pose significant risks. The other options do not accurately capture the intended purpose of breakaway walls. For instance, they are not meant to support the structure or to physically protect the ground beneath it, nor are they specifically designed to prevent wind damage. Rather, their primary goal is flood management in alignment with engineering practices aimed at enhancing safety in vulnerable coastal areas.