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Geo-Strata January-February 2013.Indd Geo-StrataJanuary/February 2013 Stability and Performance of Slopes and Embankments ALSO Lessons Learned from Geo-Legends: Charles C. Ladd Do you recommend CUT & FILL? Stop wasting money! LIME gives better results forHALF of the cost. For more information visit © 2011 Carmeuse Lime & Stone www.LimeStabilization.com WE HELP YOU FIX BAD GROUND. Practical. Adaptive. Economical. Sand. Clay. Fill. Organics. Liquefaction. Slides. THE GEOPIER SRT™ SYSTEM STABILIZES SLOPES & SLIDES ENGINEERED SOLUTIONS FOR VIRTUALLY ALL SOIL TYPES & GROUNDWATER CONDITIONS Work with engineers worldwide to solve your ground improvement challenges. For more information call 800-371-7470, e-mail [email protected] or visit geopier.com. GEOPIER IS GROUND IMPROVEMENT.™ ©2012 Geopier Foundation Company, Inc. The Geopier® technology and brand names are protected under U.S. patents and trademarks listed at www.geopier.com/patents and other trademark applications and patents pending. Other foreign patents, patent applications, trademark registrations, and trademark applications also exist. 23 January/February • 2013 FEATURES Stabilizing Colorado’s Rock Slopes by Gluing, 22 Scanning, and Bolting By Ben Arndt, P.E., M.ASCE, Ty Ortiz, P.E., and Matthew DeMarco Avoiding Surprises in Slope Stability 26 By Timothy D. Stark, Ph.D., P.E., D.GE, F.ASCE, Brian H. Queen, and Hangseok Choi, Ph.D., P.E. Double Nickel Landslide Stabilization: 32 Innovative Use of Micropiles 26 By Jamie Martens, P.E., and John Szturo, R.G. Development and Field Testing of a Pressure-Sensing 40 Grout Packer By David Paul, P.E., M.ASCE, Jeff Schaefer, Ph.D., P.E., P.G., Brook Brosi, P.G., and Patrick Carr, P.E. Laterite – A Stable or Unstable Tropically Weathered Soil? 46 By S.I.K. Ampadu, Ph.D. 32 ON THE COVER: Crews install hollow bar anchors into an existing slope using a customized drill rig maneuvered by winches and cables at the top of the slope. Soil nails and fl exible wire mesh facing were used to stabilize this slope near Annapolis, MD along 86 the Severn River. Photo courtesy of Steele Foundation, LLC. 40 January/February • 2013 10 DEPARTMENTS 6 Geo-Poem: Excavation By Mary C. Nodine, P.E., A.M.ASCE Thoughts from the President 8 By Craig Benson, Ph.D., P.E., D.GE, F.ASCE 10 From the Editorial Board By Peter Nicholson, Ph.D., P.E., D.GE, F.ASCE As I See It: The Importance of Geology in Structurally 12 Controlled Rockslides By Chester F. Watts, Ph.D., P.G., M.ASCE 12 Lessons Learned from Geo-Legends: Charles C. Ladd, Sc.D., P.E., 14 D.GE, NAE, Dist.M.ASCE By Alain El Howayek, S.M.ASCE Look Who's a D.GE 38 By Richard Short, P.E., D.GE, M.ASCE 52 The GeoCurmudgeon: Multiple Modifiers By John P. Bachner OMC Looking Out for You/Organizational Member News 54 By Linda Bayer, IOM, A.M.ASCE 60 COREBITS 57 By Linda Bayer, IOM, A.M.ASCE EDITORIAL BOARD 2013 G-I BOARD OF GOVERNORS GEO-STRATA STAFF James L. Withiam, Ph.D., P.E., D.GE, M.ASCE William K. Petersen, P.E., M.ASCE Craig Benson, Ph.D., P.E. D.GE, NAE, F.ASCE – President Stephan Jaeger D’Appolonia URS Corporation William M. Camp, III, P.E., D.GE, M.ASCE – Vice President Publisher [email protected] [email protected] 703.295.6286 Barbara Luke, Ph.D., P.E., D.GE., M.ASCE – Treasurer Veronica L. Streich, P.E., M.ASCE N. Catherine Bazán-Arias, Ph.D., P.E., M.ASCE Philip G. King, P.E., D.GE, F.ASCE – Past President Dianne Vance, CAE Linda R. Bayer, IOM, A.M.ASCE DiGioia, Gray & Associates, LLC HNTB Corporation Allen Cadden, P.E., D.GE, M.ASCE Director of Advertising Senior Content Editor [email protected] [email protected] 703.295.6234 Patricia J. Culligan, Ph.D., M.ASCE [email protected] Jeff Dunn, Ph.D., P.E., G.E., M.ASCE J. Tanner Blackburn, Ph.D., P.E., M.ASCE Kleinfelder, Inc. Hayward Baker William F. Marcuson, Ph.D., P.E., D.GE, NAE, Hon.ASCE Suzanne Davenport Sean Richardson [email protected] [email protected] Kord Wissmann, Ph.D., P.E., D.GE, M.ASCE Content Coordinator Production [email protected] [email protected] Beth Gross, P.E., M.ASCE Peter G. Nicholson, Ph.D., P.E., D.GE, F.ASCE Robert Schweinfurth, A.M.ASCE – Secretary Geosyntec Consultants University of Hawaii at Manoa non-voting Board member [email protected] [email protected] ADVERTISING SALES MANAGERS Morgan Eddy, P.E., A.M.ASCE Ken Fishman, Ph.D., P.E., M.ASCE Chris Myers Ellen Tucker Steele Foundation, LLC McMahon & Mann Consulting Engineers 214.291.3652 214.291.3661 kfi [email protected] [email protected] Brian Hubel, P.E., G.E., M.ASCE Geo-Strata magazine designed by U.S. Army Corps of Engineers ISSUE NO. 1 • VOL 17 Marketing Ahead [email protected] Geo-Strata is a forum for the free expression and interchange of ideas. The opinions and positions stated within are those of the authors, and not necessarily those of Geo-Strata, the Geo-Institute, or the American Society of Civil Engineers (ASCE). Geo-Strata—ISSN 1529-2975—is published bi-monthly by ASCE, 1801 Alexander Bell Drive, Reston, VA 20191-4400 and is a free ASCE/Geo-Institute membership benefit, not available by subscription. ADDRESS CHANGES: ASCE/G-I members should e-mail [email protected], or click on “My Profile” at asce.org. Copyright © 2013 by the American Society of Civil Engineers. All rights reserved. Materials may not be reproduced or translated without written permission from ASCE. Periodicals postage paid at Herndon, VA, and at additional mailing offices. POSTMASTER: Send address changes to Geo-Strata, 1801 Alexander Bell Drive, Reston, VA 20191-4400. 4 Geo-Strata l www.asce.org/geo Something BIG is Coming Up! DEPARTMENTS Visit us at Geo-Congress March 3-6th, 2013 to find out more ©2012 Panasonic Corporation of North America. All rights reserved. Android is a trademark of Google Inc. The Android robot is reproduced or modied from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License. www.Dataforensics.net Geo-Poem by Mary C. Nodine Excavation I stand at the edge. Solid ground becomes space: Pure potential. Take in the view. The cleanest of slates To fi ll as we please. Bright haul trucks like industrious ants, far below Change the landscape: Perhaps from it will grow An architectural wonder. By minute, imperceptible. A tower of dizzying heights. By day, barely noticeable. By geologic standards, But few will marvel at the hole in the ground. A blink of an eye. This masterpiece created Blast by blast. Not by building, Load by load. But by taking away. Lift by lift… The soil strata I know so well From borings drilled, Samples gathered, Logs drawn, Layers defi ned,Profi le painstakingly interpolated, Is revealed in all its glory – AUTHOR But briefl y. Mary C. Nodine, P.E., A.M.ASCE, is a geotechnical poet and a project For the earth, once cut, engineer with GEI Consultants, Inc. Is swiftly shored. in Woburn, MA. She can be reached at [email protected] Humble grains engineered into stout walls. Geo-StrataNovember/December 2012 Nov.Dec 2012 Geo-Strata Errata Table of Contents. The page numbering of some Department articles was incorrect. The online version is correct. 2013 Geo-Congress foldout. Stephen G. Wright, Ph.D., P.E., M.ASCE is the H. Bolton Seed Regional Geotechnics II Lecturer, not Stephen J. Wright. Ronaldo L. Borja, A.M.ASCE is not a 2013 keynote speaker. INSIDE: 2013 GeoCongress Dov Leshchinsky, Ph.D., M.ASCE, professor, University of Delaware was omitted as one ALSO of the instructors for the short course entitled "Geosynthetics Reinforced Slopes and Ten Practical Employee Engagement Steps That Drive Results Embankments Design and Construction." 6 Geo-Strata l www.asce.org/geo Thoughts from the President by Craig Benson United We Thrive, Divided We Struggle he threat of commoditization has been a common conducted through accepted processes and procedures that we thread of discussions in our profession, as well as have developed over the years. We should then build consen- envisioning the means to ensure that our stake- sus opinions and vision, and share these consensus visions holders (e.g., clients, customers, the public, etc.) with those who procure our services or may join us in our Tunderstand and appreciate the value of the services we provide. profession. We will thrive with this behavior. In contrast, if we There is talk of “raising the bar” to ensure a high level of tech- behave divisively, make end runs around accepted policy, and nical competency and communicating the “value proposition” project our disputes in the court of public opinion, we will associated with this competency to our stakeholders. These are look foolish and unprofessional and will struggle to make a high priorities for our profession. case regarding our professionalism and the value we add. I argue that there is another issue that we need to consider – In the last decade, our profession has periodically veered the great power of unity within groups that compete for resourc- from unity, which has damaged how stakeholders perceive es allocated from a larger community. The medical and legal us. Without being too specific, let me share two examples. A professions make great use of the power of unity, and I think the public dispute erupted between factions in our profession re- geoprofession can do more to project unity and professionalism garding the relative roles of standardization and the creativity to our stakeholders.
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