Estimating Highway Preconstruction Services Costs - Volume 2: Research Report (2016) / Chapter Skim
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3 Introduction 1.1 Background The issue of accurate estimating of preconstruction services (PCS) costs is essentially tied to the efficient use of available public capital (Janacek 2006)
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4the Oklahoma Turnpike Authority (OTA) confirmed this inference and demonstrated for one agency that, to a point, increases in actual construction costs compared to the early estimate were inversely proportional to the amount of money allocated for PCS (Gransberg et al.
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5 2. Develop a guidebook for agency implementation of a standardized approach to estimating PCS costs for construction projects.
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6The survey for this study was directed at the members of the AASHTO SCOD to the various PCS cost-estimating practices and identify both potential case study opportunities. The entire team contributed to the survey.
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7 Once the potential case study population was developed, the final list and the rationale for selecting each case were submitted to the NCHRP panel. On receipt of the panel's agreement, the case study data collection began ahead of schedule.
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8Figure 1.3. Phase 2 and 3 research plan.
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9 After becoming familiar with the Utah and Iowa data sets, the team became concerned at how different the two sets were. Such variation between the agencies' classification of data indicated that it would be difficult to achieve a consistent result between the two DOT's models.
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10 from the workshops was used to further tweak the guidebook before its final review by the panel.
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