Learn how strategic hardscape location choices can minimize a site’s impervious area and support LEED sustainable design principles. Expert tips for the LEED Green Associate Exam.
Table of Contents
Question
Strategically locating functional and decorative hardscape on a project site may reduce the amount of on-site
A. impervious area
B. sensitive area
C. waste area
D. pervious area
Answer
A. impervious area
Explanation
Strategically locating hardscape elements like walkways, patios, and decorative features on a project site can help reduce the amount of impervious area. Impervious surfaces are those that water cannot penetrate, such as concrete and asphalt. They prevent rainfall from soaking into the ground, increasing stormwater runoff which can lead to flooding, erosion, and pollution of nearby water bodies.
Some key strategies for minimizing impervious area with hardscape design and placement include:
- Clustering hardscape elements together to leave more of the site undisturbed
- Using pervious paving materials like permeable pavers or porous concrete where hardscape is needed
- Limiting the width of paths, driveways, and patios to only what is necessary for their function
- Preserving existing trees and vegetation, especially in low-lying areas, to absorb stormwater
- Directing runoff from impervious surfaces to rain gardens, bioswales, or infiltration basins
Reducing impervious area supports several LEED credits related to sustainable sites and stormwater management. It helps protect the natural hydrology and ecology of the site.
The other answer options are incorrect because strategically locating hardscape would not directly reduce sensitive natural areas, waste/trash areas, or pervious surfaces that absorb water. The goal is to minimize impervious area while still providing functional and attractive hardscape.
USGBC LEED Green Associate certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the USGBC LEED Green Associate exam and earn USGBC LEED Green Associate certification.