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US Green Building Council LEED AP ND Exam - Topic 7 Question 26 Discussion
Topic #: 7
For Neighborhood Pattern and Design Tree-Lined and Shaded Streetscapes Credit - Option 2 Shaded Sidewalks.what size of newly planted trees can be considered in calculating the percentage or shaded sidewalks?
For the Neighborhood Pattern and Design Credit for Tree-Lined and Shaded Streetscapes, Option 2: Shaded Sidewalks, the crown diameter of newly planted trees used in calculating the percentage of shaded sidewalks is based on their expected size 10 years after planting.
Detailed Explanation:
Shaded Sidewalks Credit: This credit aims to increase the comfort and usability of sidewalks by ensuring they are shaded, reducing heat exposure and improving the pedestrian experience. The shade coverage must be calculated based on the anticipated tree canopy.
Crown Diameter Calculation: LEED requires that the shading potential of newly planted trees be projected based on the tree's expected crown diameter 10 years after planting. This approach ensures that the shading provided is realistic and sustainable over time.
Long-Term Planning: Using the 10-year crown diameter allows project teams to plan for the future growth of trees and ensure that sidewalks will be adequately shaded as the neighborhood matures. This long-term perspective is crucial for maintaining sustainable urban environments.
The LEED Reference Guide for Neighborhood Development specifies how to calculate tree canopy coverage and how future growth is factored into these calculations.
The LEED v4 Neighborhood Development documentation provides additional guidelines on selecting tree species and projecting their growth.
For more detailed guidance, refer to:
LEED Reference Guide for Neighborhood Development
LEED v4 Neighborhood Development
These answers provide a comprehensive understanding of the requirements and best practices for achieving LEED-ND credits in specific scenarios.
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