Geotechnical Information Practices in Design-Build Projects (2012)

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CONTENTS 1 SUMMARY 3 CHAPTER ONE INTRODUCTION Synthesis Objective, 3 Background, 4 Key Definitions, 5 Research Approach, 6 Organization of the Report, 7 8 CHAPTER TWO CASE STUDIES IN LEGAL AND CONTRACTUAL ISSUES ASSOCIATED WITH DIFFERING SITE CONDITIONS Introduction, 8 Differing Site Conditions Clause, 8 Federal Policy on the Use of Differing Site Condition Clauses, 8 Impediments to Recovering Under a Differing Site Condition Theory, 11 Differing Site Conditions and the Design-Build Process, 13 Recent Cases Addressing Differing Site Condition Claims, 14 Contractor’s Perspective,16 Conclusions, 17 18 CHAPTER THREE GEOTECHNICAL CONTENT OF AGENCY DESIGN-BUILD POLICIES, PROCEDURES, AND PROGRAMS Introduction, 18 Design-Build Project Delivery Decision, 18 Design-Build Request for Proposal Geotechnical Content, 24 Liability for Geotechnical Information Contained in the Request for Proposal, 30 Contractor’s Perspective, 31 Conclusions, 31 32 CHAPTER FOUR DESIGN-BUILD SELECTION METHODS Introduction, 32 Design-Build Procurement Strategy, 33 Contractor’s Perspective, 39 Conclusions, 39 40 CHAPTER FIVE DESIGN-BUILD POST-AWARD DESIGN PROCEDURES Introduction, 40 Geotechnical Design Process, 41 Geotechnical Design Reviews, 43 Contractor’s Perspective, 46 Conclusions, 46 47 CHAPTER SIX DESIGN-BUILD GEOTECHNICAL QUALITY MANAGEMENT PROCEDURES Introduction, 47 Geotechnical Quality Management Issues, 49 Perceived Impact of Design-Build on Ultimate Project Quality, 52 Contractor’s Perspective, 54 Conclusions, 55

56 CHAPTER SEVEN DESIGN-BUILD GEOTECHNICAL CASE STUDIES Introduction, 56 Geotechnical Engineering Case Study Project Details, 56 Conclusions, 64 66 CHAPTER EIGHT CONCLUSIONS Introduction, 66 Conclusions, 66 Effective Practices, 68 Suggestions for Future Research, 69 70 REFERENCES 75 APPENDIX A SURVEY QUESTIONNAIRE 108 APPENDIX B MISSOURI DOT SAMPLE REQUEST FOR QUALIFICATIONS FOR EMERGENCY SLOPE REPAIR/STABILIZATION DESIGN-BUILD PROJECT Note: Many of the photographs, figures, and tables in this report have been converted from color to grayscale for printing. The electronic version of the report (posted on the web at www.trb.org) retains the color versions.