LEED AP Building Design and Construction (BD+C) Practice Exam

What percentage of rainfall must be managed for projects with a zero-lot-line and a maximum density of 1.5 FAR?

1. 75%

2. 80%

3. 85%

4. 90%

The correct answer is: 85%

For projects with a zero-lot-line and a maximum density of 1.5 Floor Area Ratio (FAR), the correct percentage of rainfall that must be managed is 85%. This requirement is grounded in sustainable site development practices that aim to minimize the impact of stormwater runoff on the surrounding environment. Managing 85% of the rainfall helps reduce the volume and speed of runoff, which can lead to increased erosion, pollution, and habitat degradation in nearby water bodies. By implementing strategies such as green roofs, permeable pavements, and rain gardens, projects not only comply with stormwater requirements but also contribute to the overall sustainability goals outlined in the LEED rating system. This specific management threshold is particularly relevant for higher-density urban projects where impervious surfaces can significantly increase runoff. The focus on managing such a high percentage reflects an understanding that urban areas are often more susceptible to the negative impacts of stormwater, making it crucial to implement effective water management strategies in the design phase.