Coastal and Floodplain Construction Inspector's Practice Exam

What is the ultimate design wind speed considered for a wind-borne debris region?

1. 120 mph

2. 130 mph

3. 140 mph

4. 150 mph

The correct answer is: 130 mph

In the context of wind-borne debris regions, the ultimate design wind speed is a critical factor in ensuring that structures are able to withstand the forces associated with high winds, such as those from hurricanes or severe storms. This wind speed is determined based on historical data, local building codes, and design standards that account for the potential impact of debris carried by the wind. Selecting 130 mph as the ultimate design wind speed aligns with the guidelines set forth by the International Building Code (IBC) and other relevant standards. In designated wind-borne debris regions, structures must be designed to resist not only wind pressure but also the additional threats posed by flying debris, making it essential to establish a baseline wind speed that reflects common conditions in these high-risk areas. As a result, using 130 mph in design calculations provides an adequate safety margin to protect buildings and their occupants. This wind speed reflects the threshold necessary to categorize a region as being susceptible to wind-borne debris and mandates more stringent construction practices to enhance structural resilience. Higher speeds such as 140 mph or 150 mph may exceed the requirements for many regions, where the prevailing design criteria aim to balance safety, practicality, and economic considerations in construction practices. Therefore, understanding that 130 mph is the