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

Under what conditions can wetlands qualify as open space?

1. When they are located on flat land

2. When the side slope gradients are 1:4 or less and are vegetated

3. Only if they are artificially constructed

4. Only when combined with recreational areas

The correct answer is: When the side slope gradients are 1:4 or less and are vegetated

Wetlands can qualify as open space when the side slope gradients are 1:4 or less and are vegetated. This condition is significant because it facilitates the sustainable management and multifunctionality of wetland areas. The 1:4 slope ratio means that for every unit of vertical rise, there should be at least a four-unit horizontal distance. This gradual slope helps to maintain the ecological functions of wetlands, such as water filtration, habitat for wildlife, and flood mitigation, while also making the area accessible and usable for various recreational or educational purposes. Vegetation is crucial for maintaining the health of wetlands as it helps stabilize the soil, reduces erosion, and supports diverse plant and animal life. By ensuring the wetlands have vegetated slopes, they can serve as not only functional ecosystems but also as usable spaces for the community. In contrast, wetlands being located on flat land does not inherently qualify them as open space, as flat areas can also serve other functions or have limited usability. Artificially constructed wetlands can contribute to open space but do not automatically qualify unless they meet specific ecological criteria. Lastly, wetlands do not need to be combined with recreational areas to qualify as open space, as their ecological value can stand alone. Thus, the vegetated slope requirement is central