National Academies Press: OpenBook
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. The Renewal of Stormwater Systems Using Trenchless Technologies. Washington, DC: The National Academies Press. doi: 10.17226/25167.
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Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

The Renewal of Stormwater Systems Using Trenchless Technologies A Synthesis of Highway Practice David C. Ward Shannon & WilSon, inc. Seattle, WA 2018 Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration Subscriber Categories Construction • Geotechnology • Hydraulics and Hydrology N A T I O N A L C O O P E R A T I V E H I G H W A Y R E S E A R C H P R O G R A M NCHRP SYNTHESIS 519

Published reports of the NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM are available from Transportation Research Board Business Office 500 Fifth Street, NW Washington, DC 20001 and can be ordered through the Internet by going to http://www.national-academies.org and then searching for TRB Printed in the United States of America NCHRP SYNTHESIS 519 Project 20-05, Topic 48-05 ISSN 0547-5570 ISBN 978-0-309-39029-3 Library of Congress Control Number 2018943430 © 2018 National Academy of Sciences. All rights reserved. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, FAA, FHWA, FMCSA, FRA, FTA, Office of the Assistant Secretary for Research and Technology, PHMSA, or TDC endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from CRP. Cover photo credit: Ohio Department of Transportation NOTICE The report was reviewed by the technical panel and accepted for publication according to procedures established and overseen by the Transportation Research Board and approved by the National Academies of Sciences, Engineering, and Medicine. The opinions and conclusions expressed or implied in this report are those of the researchers who performed the research and are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; or the program sponsors. The Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; and the sponsors of the National Cooperative Highway Research Program do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of the report. NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Systematic, well-designed research is the most effective way to solve many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation results in increasingly complex problems of wide inter- est to highway authorities. These problems are best studied through a coordinated program of cooperative research. Recognizing this need, the leadership of the American Association of State Highway and Transportation Officials (AASHTO) in 1962 ini- tiated an objective national highway research program using modern scientific techniques—the National Cooperative Highway Research Program (NCHRP). NCHRP is supported on a continuing basis by funds from participating member states of AASHTO and receives the full cooperation and support of the Federal Highway Administration, United States Department of Transportation. The Transportation Research Board (TRB) of the National Academies of Sciences, Engineering, and Medicine was requested by AASHTO to administer the research program because of TRB’s recognized objectivity and understanding of modern research practices. TRB is uniquely suited for this purpose for many reasons: TRB maintains an extensive com- mittee structure from which authorities on any highway transportation subject may be drawn; TRB possesses avenues of communications and cooperation with federal, state, and local governmental agencies, univer- sities, and industry; TRB’s relationship to the National Academies is an insurance of objectivity; and TRB maintains a full-time staff of special- ists in highway transportation matters to bring the findings of research directly to those in a position to use them. The program is developed on the basis of research needs identified by chief administrators and other staff of the highway and transportation departments, by committees of AASHTO, and by the Federal Highway Administration. Topics of the highest merit are selected by the AASHTO Special Committee on Research and Innovation (R&I), and each year R&I’s recommendations are proposed to the AASHTO Board of Direc- tors and the National Academies. Research projects to address these topics are defined by NCHRP, and qualified research agencies are selected from submitted proposals. Administration and surveillance of research contracts are the responsibilities of the National Academies and TRB. The needs for highway research are many, and NCHRP can make significant contributions to solving highway transportation problems of mutual concern to many responsible groups. The program, however, is intended to complement, rather than to substitute for or duplicate, other highway research programs.

The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, non- governmental institution to advise the nation on issues related to science and technology. Members are elected by their peers for outstanding contributions to research. Dr. Marcia McNutt is president. The National Academy of Engineering was established in 1964 under the charter of the National Academy of Sciences to bring the practices of engineering to advising the nation. Members are elected by their peers for extraordinary contributions to engineering. Dr. C. D. Mote, Jr., is president. The National Academy of Medicine (formerly the Institute of Medicine) was established in 1970 under the charter of the National Academy of Sciences to advise the nation on medical and health issues. Members are elected by their peers for distinguished contributions to medicine and health. Dr. Victor J. Dzau is president. The three Academies work together as the National Academies of Sciences, Engineering, and Medicine to provide independent, objective analysis and advice to the nation and conduct other activities to solve complex problems and inform public policy decisions. The National Academies also encourage education and research, recognize outstanding contributions to knowledge, and increase public understanding in matters of science, engineering, and medicine. Learn more about the National Academies of Sciences, Engineering, and Medicine at www.national-academies.org. The Transportation Research Board is one of seven major programs of the National Academies of Sciences, Engineering, and Medicine. The mission of the Transportation Research Board is to increase the benefits that transportation contributes to society by providing leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisciplinary, and multimodal. The Board’s varied committees, task forces, and panels annually engage about 7,000 engineers, scientists, and other transportation researchers and practitioners from the public and private sectors and academia, all of whom contribute their expertise in the public interest. The program is supported by state transportation departments, federal agencies including the component administrations of the U.S. Department of Transportation, and other organizations and individuals interested in the development of transportation. Learn more about the Transportation Research Board at www.TRB.org.

C O O P E R A T I V E R E S E A R C H P R O G R A M S CRP STAFF FOR NCHRP SYNTHESIS 519 Christopher J. Hedges, Director, Cooperative Research Programs Lori L. Sundstrom, Deputy Director, Cooperative Research Programs Tanya M. Zwahlen, Consulting Project Manager Cheryl Keith, Senior Program Assistant Eileen P. Delaney, Director of Publications Natalie Barnes, Associate Director of Publications Kami Cabral, Editor NCHRP PROJECT 20-05 PANEL Brian A. Blanchard, Florida DOT, Tallahassee, FL (Chair) Stuart D. Anderson, Texas A&M University, College Station, TX Socorro Briseno, California DOT, Sacramento, CA David M. Jared, Georgia DOT, Forest Park, GA Cynthia L. Jones, Ohio DOT, Columbus, OH Malcolm T. Kerley, NXL, Richmond, VA John M. Mason, Jr., Auburn University, Auburn, AL Roger C. Olson, Minnesota DOT, Bloomington, MN (retired) Benjamin T. Orsbon, South Dakota DOT, Pierre, SD Randall R. Park, Utah DOT, Salt Lake City, UT Robert L. Sack, New York State DOT, Albany, NY Francine Shaw Whitson, FHWA, Washington, DC Joyce N. Taylor, Maine DOT, Augusta, ME Jack Jernigan, FHWA Liaison Stephen F. Maher, TRB Liaison TOPIC 48-05 PANEL Thomas Birnbrich, Ohio DOT, Columbus, OH Bryan Bradley, Iowa DOT, Ames, IA Matthew DeLong, Michigan DOT, Lansing, MI JoAnn Kurts, Louisiana DOTD, Baton Rouge, LA Mohammad Najafi, The University of Texas at Arlington, Arlington, TX C. Paul Scott, Cardno, Dumfries, VA Alana M. Spendlove, Utah DOT, Salt Lake City, UT Morgan Kessler, FHWA Liaison C. K. Leuderalbert, FHWA Liaison Stephen F. Maher, TRB Liaison

FOREWORD Highway administrators, engineers, and researchers often face problems for which information already exists, either in documented form or as undocumented experience and practice. This infor- mation may be fragmented, scattered, and unevaluated. As a consequence, full knowledge of what has been learned about a problem may not be brought to bear on its solution. Costly research findings may go unused, valuable experience may be overlooked, and due consideration may not be given to recommended practices for solving or alleviating the problem. There is information on nearly every subject of concern to highway administrators and engineers. Much of it derives from research or from the work of practitioners faced with problems in their day- to-day work. To provide a systematic means for assembling and evalu ating such useful information and to make it available to the entire highway community, the American Association of State High- way and Transportation Officials—through the mechanism of the National Cooperative Highway Research Program—authorized the Transportation Research Board to undertake a continuing study. This study, NCHRP Project 20-05, “Synthesis of Information Related to Highway Problems,” searches out and synthesizes useful knowledge from all available sources and prepares concise, documented reports on specific topics. Reports from this endeavor constitute an NCHRP report series, Synthesis of Highway Practice. This synthesis series reports on current knowledge and practice, in a compact format, without the detailed directions usually found in handbooks or design manuals. Each report in the series provides a compendium of the best knowledge available on those measures found to be the most successful in resolving specific problems. PREFACE By Tanya M. Zwahlen Staff Officer Transportation Research Board The objectives of this synthesis project were to summarize trenchless technologies used for the renewal of stormwater systems, including new, emerging, and underutilized methods, and to identify future research needs. This information can help highway stakeholders identify effective technologies used in the structural and functional renewal of stormwater facilities and can inform facility owners in their efforts to minimize negative impacts and maximize cost benefits. The information contained in this synthesis was obtained using three sources. First, a literature review was conducted on all existing research concerning the use of trenchless technologies, includ- ing international experience. Second, a survey was distributed to state departments of trans- portation, municipalities, and special districts to identify successful examples of the use of these technologies. The survey and list of responding agencies are included as Appendix A and Appendix B, respectively. These appendices can be found on the TRB website (www.trb.org) by searching for “NCHRP Synthesis 519.” Finally, case examples were developed involving the use of different technologies and conditions where they are applicable. David C. Ward of Shannon & Wilson, Inc., collected and synthesized the information and wrote the report. The members of the topic panel are acknowledged on page iv. This synthesis is an immediately useful document that records the practices that were acceptable within the limitations of the knowledge available at the time of its preparation.

Note: Photographs, figures, and tables in this report may 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. 1 Summary 3 Chapter 1 Introduction 3 What Is Trenchless Renewal of Stormwater Systems? 3 Background 4 Study Methodology 6 Organization of Synthesis 6 Chapter Summary 7 Chapter 2 Trenchless Renewal Methods 7 Introduction 7 Definitions 17 Summary of Advantages and Challenges 17 Emerging Technologies 21 Chapter Summary 22 Chapter 3 Current Practice and Experience 22 Introduction 22 Experience 22 Methods and Frequency Used 24 Satisfaction with Methods Used 26 Increasing Trenchless Renewal Use 27 Method Selection 29 Reasons for Using Trenchless Renewal 30 Defects Commonly Mitigated and Satisfaction 31 Costs 32 Underutilized Methods 32 Chapter Summary 34 Chapter 4 Conclusions 37 References 39 Bibliography 42 Glossary 44 Acronyms and Abbreviations 45 Appendix A Survey Questionnaire 46 Appendix B Agencies Responding to Questionnaire C O N T E N T S

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TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 519: The Renewal of Stormwater Systems Using Trenchless Technologies summarizes technologies used for the renewal of stormwater systems, including new, emerging, and underutilized trenchless methods, and identifies future research needs.

Both trenchless replacement and trenchless renewal methods can reduce negative impacts associated with surface disruption by moving the work area outside of the travel lanes and concentrating the construction impacts off the roadway.

Trenchless renewal can extend the service life of existing stormwater facilities by addressing decay such as corrosion, abrasion, and erosion; reducing or eliminating infiltration and exfiltration; and providing a structural repair or improving the structural capacity of culverts, pipelines, manholes, and related stormwater structures. In some situations, trenchless renewal can even improve the hydraulic capacity of the stormwater system.

Appendix A and Appendix B are available to download in separate documents.

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