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Contract time affects the cost of construction, traffic disruption and public inconvenience, the economic impact of projects to the surrounding areas, and schedule risks.

The TRB National Cooperative Highway Research Program's NCHRP Research Report 979: Systematic Approach for Determining Construction Contract Time: A Guidebook provides state departments of transportation guidance for producing consistently credible, reliable, and defensible contract time estimates.

Supplemental to the report is NCHRP Web-Only Document 298: Developing a Systematic Approach for Determining Construction Contract Time, a spreadsheet-based Toolkit, a Technical Memorandum, and a Presentation.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2022. Systematic Approach for Determining Construction Contract Time: A Guidebook. Washington, DC: The National Academies Press. https://doi.org/10.17226/26537.

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Publication Info

180 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/26537
Chapters skim
Front Matter i-viii
Summary 1-3
Chapter 1 - Introduction 4-8
Chapter 2 - CTD Guide for DBB Projects 9-38
Chapter 3 - CTD Guide for Urban Projects with Incentive Provisions 39-62
Chapter 4 - CTD Guide for APDMs 63-85
Chapter 5 - Relationship of Contract Time to Risk Management 86-103
Chapter 6 - Post-Construction Contract Time Evaluation and Feedback Loop 104-117
Abbreviations 118-119
Glossary 120-124
Appendix A - Tools 125-162
Appendix B - ACT Descriptions 163-174

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