Sustainable Highway Construction (2019) / Chapter Skim
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Pages 96-106
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96 5 INTERVIEWS Twenty-six interviews (TABLE 15) were conducted using an online meeting application and they identified 32 SCPs (see Section 8 for the list)
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97 Collect supporting documentation. Done if a subject offers to provide supporting documentation (e.g., project plans, specifications, company policy, etc.)
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98 TABLE 19. Interview Topics Discussed Arranged by the Original Framework for Highway Construction (note: blank cells indicate no subjects discussed that topic)
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99 5.5 INTERVIEW TOPIC OBSERVATIONS Interview topics were limited to what the interview subjects knew. Therefore, some things that their organizations may have done or experienced may not have been captured if the subject was unfamiliar with the topic.
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100 5.6.1.3 There Is No Leading Entity in Sustainable Highway Construction Unlike the building industry, which has several leading entities (e.g., the U.S. Green Building Council and its Leadership in Energy and Environmental Design – LEED – rating system, or the Living Future Institute)
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101 5.6.3 Policy/Program Discussions of policies and programs were intertwined with organizational strategy. Specific insights were: One metric for governments: Federal Energy Management Program (FEMP)
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102 5.6.6 Contracting There is no consensus on how best to add sustainability considerations to a contract. Most often, general metrics derived from international standards like the Global Reporting Initiative are used, or in-house processes are developed.
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103 earthwork. Sustainability implications are byproducts of cost-driven decisions.
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104 The foaming process (add water to foam asphalt) allows the contractor to better control supply chain (i.e., does not have to purchase an additive)
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105 HIR has been on alternative bid contracts: e.g., plan A = mill/overlay, plan B = scarify/overlay – CONTRACTOR 5.6.12.5 General Comments on Recycled Materials When using recycled materials, the standard is that performance of the end product must be as good as it would have been without the recycled materials - OWNER The DOT goal is to replace 10% of virgin materials with recycled materials - OWNER The DOT saw savings of $19 million (2016) and $20 million (Previous years)
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106 5.6.14 Comments on Sustainability Implementation 5.6.14.1 Standards Requirements Prevent Incremental Improvement In some cases, if a project is undertaken, or if a portion of a project is disturbed, then it must be upgraded to current standards. For instance, this often happens with drainage standards.
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