Pavement Sustainability Basics
What is sustainability?
Sustainability is often described as the balance of the environmental, social, and economic needs, collectively referred to as the "triple-bottom line."
In the context of pavements, "sustainable" typically refers to system characteristics that indicate pavementâ€™s ability to:
- Achieve the engineering goals for which it was constructed
- Preserve and restore surrounding ecosystems
- Use financial, human, and environmental resources economically
- Meet basic human needs such as health, safety, equity, employment, comfort, and happiness
For each of aspect of sustainability, there are associated assessment methods and metrics:
- Economic: Life Cycle Cost Analysis (LCCA) and Life Cycle Planning (LCP)
- Environmental: Life Cycle Assessment (LCA)
- Social: Sustainability Rating Systems (SRS) and Social LCA (SLCA)