Alternate Design/Alternate Bid Process for Pavement-Type Selection (2017) / Chapter Skim
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31 CHAPTER FIVE ALTERNATE DESIGN/ALTERNATE BID CONTRACT ADMINISTRATION PROCEDURES INTRODUCTION This chapter will discuss the information gained from the synthesis about the post-award process in ADAB projects. It will discuss the impact of ADAB on consultant design contracts and provide information on the application of material adjustment factors in conjunction with ADAB projects.
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32 FIGURE 13 INDOT ADAB cost analysis for 2010 (INDOT 2011)
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33 ALTERNATE DESIGN/ALTERNATE BID PERFORMANCE MEASURES AND OUTCOMES As part of the literature review, ADAB projects were identified and tabulated to furnish an unscientific sample population from which to identify trends in their outcomes. These were then evaluated regarding the following three primary motivations for implementing ADAB found in the literature: 1.
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34 Typical agency risks include reduced pavement performance, increased unplanned intervention, cost overruns, time delays, and associated indirect effects such as public dissatisfaction and increased work zone accidents. The agency also can perform an independent evaluation of economic and noneconomic factors to address responsibilities toward to the taxpayers, road users, and the environment.
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35 2. The perception that material price adjustment clauses will reduce unit prices in paving contracts is not confirmed by the empirical research.
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