Asphalt Pavement Magazine - January/February 2016 - (Page 28)

How Sustainability Rating Systems Address Asphalt Pavements Different green rating systems handle asphalt pavement differently Steve Muench, Ph.D., P.E. S ustainability is a difficult thing to measure and communicate. Perhaps because of this, a variety of different infrastructure markets have become involved with sustainability rating systems. There are a number of these systems relevant to the asphalt pavement industry. Although building rating systems, such as LEED (Leadership in Energy and Environmental Design) are well-established, others designed for general infrastructure or roads have gained a following in the last five years. By most measures, the influence of these road-related rating systems is growing in the transportation infrastructure community, and we can expect their use to grow in the next decade. Because these rating systems can be used to evaluate projects within which asphalt pavements are typically included, it is useful to examine how they address the asphalt pavement industry and its products. Broadly speaking, sustainability rating systems for buildings, like LEED, have relatively few points available for asphalt pavements, which is to be expected because they are focused on buildings. However, because pavements constitute about 70 percent of all highway and street construction put in place annually in the U.S., one might expect infrastructure systems, and especially road-related systems, to address these pavements more thoroughly. It is important that you understand what is in a particular rating system. Each rating system is unique and offers road owners and agencies specs they can use to ensure greater sustainability, while offering contractors capable of meeting these rating systems greater competitive advantage. What Counts and What Doesn't in Roadway Sustainability Rating Systems Recently, Dr. Manisa Veeravigrom developed a framework for roadway sustainability rating systems1 during work on her doctoral studies at the University of Washington by examining 11 existing systems (all the road-related systems available with sufficient documentation) to see what they contained. Among the pavement-related systems, she found that there are some commonly addressed topics: * Construction waste management * Materials reuse and recycling * Minimize materials * Local materials * Reduce non-renewable energy use * Reduce greenhouse gas emissions She also found a number of topics that were only addressed in a few systems, if any: 28 * View past issues online at www.naylornetwork.com/nap-nxt * Work site safety * Job training * Prevailing wages * Materials production emissions * Durable structures (i.e., long-life pavements) * Construction quality control * Life cycle assessment (LCA) * Local employment * Cost-benefit analysis (including life-cycle cost analysis) The fact that so few rating systems address these topics is concerning because the asphalt industry, for good reason, also values safety (Safety Innovation Award), training (Diamond Paving Commendation), wages, longlife pavements (APA's Perpetual Pavement Award), construction quality (e.g., Sheldon G. Hayes, Ray Brown, Larry H. Lemon, and QIC awards), and cost. How LEED, Greenroads, Envision, and INVEST Stack Up It is helpful to look at a few prominent rating systems in detail to see how they specifically address asphalt pavements. In this section, the LEED version 4 BD+C NC (Building Design and Construction for New Construction buildings), Greenroads version 2, the FHWA's INVEST version 1.2, and Envision version 2.0 are examined in more detail. Each rating system was reviewed for credits that http://www.naylornetwork.com/nap-nxt

Table of Contents for the Digital Edition of Asphalt Pavement Magazine - January/February 2016

Chairman’s Commentary
Industry News
NAPA Asphalt Sustainability Conference Wrap-Up
An Update of the NAPA EPD Program
How Sustainability Rating Systems Address Asphalt Pavements
Corporate Sustainability Reports
World of Asphalt 2016 Preview
Index of Advertisers/Advertisers.com

Asphalt Pavement Magazine - January/February 2016

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