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102 40 Screw Piles and Helical Anchors 34 Spread 28 A Foundation 34 Spread Footings 40 Screw Piles and 46 Foundation Engineering Trip Revisited Helical Anchors Engineering… 102 JANUARY // FEBRUARY 2015 FOUNDATIONS Proudly published by the Geo-Institute of ASCE GEOPIER IS GROUND IMPROVEMENT.™ Work with engineers worldwide to solve your ground improvement challenges. THE GEOPIER SRT SYSTEM: LOW-IMPACT SLOPE STABILITY WE HELP YOU FIX BAD GROUND. An existing slope along the high occupancy travel lanes of the I-495 Capital Beltway in Fairfax, Virginia had an For more information call 800-371-7470, unacceptable factor of safety against sliding. The slope was e-mail [email protected] or visit geopier.com. a perfect application for the Geopier SRT system. SRT is a slope reinforcement technology that uses rigid steel Plate Pile™ elements to stabilize shallow failing slopes or reinforce marginally stable slopes. The use of small, mobile equipment allowed for the work to be performed directly on the slope with no interruption of traffic. This project demonstrated that the SRT system can successfully be installed along roadways with difficult access, while decreasing construction time and earthwork operations. ©2014 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. January // February 2015 Features 28 A Foundation Engineering Trip 52 Evaluating Bridges with Down the Mississippi Unknown Foundations for Foundations for Mississippi River bridges from Susceptibility to Scour Minnesota to Louisiana. North Carolina applies risk-based guidelines to over By Dan Brown, Paul Axtell, and Steve Dapp 3,750 bridges. By Mohammed A. Mulla 34 Spread Footings Revisited Geotechnical advances lead to expanded use for 58 Bill Shannon and Stan Wilson bridge abutments. Geotechnical pioneers with a 60-year legacy. By Derrick Dasenbrock By Hollie Ellis 28 A Foundation 34 Spread Footings 40 Screw Piles and 46 Foundation 40 Screw Piles and Helical Anchors Engineering Trip Revisited Helical Anchors Engineering… 102 ON THE COVER 180 years of use in geotechnical engineering. A worker prepares one of the many dowel JANUARY // FEBRUARY 2015 By Alan J. Lutenegger and Samuel P. Clemence holes for post-tensioned threaded rods that will be used to connect the old pile cap to a new 8-ft–thick, reinforced concrete foundation FOUNDATIONS positioned over the top of the existing pile cap. 46 Foundation Engineering… 102 This construction will allow for the transfer of So much has changed in the years since Nat Fox first superstructure loads away from the damaged existing H-Pile foundation to the new 48-in– experimented with select over-excavation Proudly published by the Geo-Institute of ASCE diameter, drilled shaft foundations bearing in his backyard. on bedrock 175 ft below. This work is being By Kord J. Wissmann performed in Wilmington, DE, as part of the I-495 Emergency Repair Project on the piers that had suffered foundation damage in 2014. CONNECT WITH US www.asce.org/geo twitter.com/GeoInstitute facebook.com/GeoInstitute LinkedInGeo GeoInstituteASCE 2 GEOSTRATA JANUARY/FEBRUARY 2015 Skyline Steel Hot Rolled Threaded Bar In addition to providing the most comprehensive product offering from a single company in the geotechnical industry, Skyline Steel is a premier supplier of Gr. 75 Hot Rolled Threaded Bar ■ New improved hot-rolled thread form design allows for up to 30% increased thread engagement ■ Available in bar designations #6 through #14; diameters ¾” – 1 ¾” ■ Hot rolled threaded bars conform to ASTM A615 “Standard Specification for Deformed Carbon Steel Bars for Concrete Reinforcement”, excluding the requirement of: “Legibly rolled surface markings” ■ Multiple stocking locations in the USA with immediate availability ■ Skyline Steel threaded bars may be field cut and coupled at any position along their length ■ Accessories designed and test proven to perfectly complement our threaded bars allowing coupling and plate positioning with nuts at any location along the bar ■ Ideal for use in concrete reinforcement and rock/soil anchoring applications See how Skyline Steel can help with your next geostructural project. Visit www.skylinesteel.com or call 888.450.4330. © 2014 Skyline Steel, LLC. Skyline Steel is a wholly-owned subsidiary of Nucor Corporation, the largest producer of steel in the United States. in the United steel of producer the largest Corporation, subsidiary of Nucor is a wholly-owned Skyline Steel LLC. © 2014 Skyline Steel, Our Hot Rolled Threaded Bars are manufactured by Nucor. Skyline Steel is a wholly-owned subsidiary of Nucor Corporation, MADE IN U.S.A. the largest producer of steel in the United States. Our bar product consists of a minimum of 80% recycled material. Geo-Strata_0614_fin.indd 1 6/12/14 5:02 PM January // February 2015 6 Letters 8 President’s Letter By Allen Cadden 10 From the Editorial Board By Morgan A. Eddy 12 COREBITS PEOPLE Departments 14 COREBITS STUDENTS 16 As I See It: Are We Getting Better? By Alan Macnab 20 As I See It: So You Call It Dirt?! By Lakshmi N. Reddi 24 Lessons Learned from GeoLegends: J. Carlos Santamarina By Hai (Thomas) Lin, Yi Dong, Lusu Ni, and Suguang (Sean) Xiao 64 The GeoCurmudgeon: Tell Me a Story By John P. Bachner 66 Look Who’s a D.GE An interview with Edward J. Garbin, Jr. 68 G-I ORGANIZATIONAL MEMBER NEWS 72 COREBITS EVERYTHING G-I 74 COREBITS CAREER 76 COREBITS INDUSTRY 79 IFCEE 2015 Showcase of Exhibitors 96 GeoPoem: External Bracing By Mary C. Nodine GEOSTRATA is published by the Geo-Institute and the American Society of Civil Engineers. 4 GEOSTRATA JANUARY/FEBRUARY 2015 We Have BIG News! INTERPRET ANALYZE PREPARE Visit Dataforensics at the GeoCongress Booth 91 to Learn More About the Future of Data Collection WE ARE HIRING! Dataforensics has an immediate need for a www.Dataforensics.net Geotechnical Engineer/Software Implementation Specialist. Call: 678.406.0106 ext. 2 ©2012 Panasonic Corporation of North America. All rights reserved. Contact [email protected] for consideration 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 or scan the QR code for details. terms described in the Creative Commons 3.0 Attribution License. Professor of Geotechnical Engineering Letters → The Department of Civil, Environmental and Geomatic Engineering (www.baug.ethz.ch) at 50 Innovations in 56 Improving Underground 22 Future of Underground 42 Geo IT Revolution: Automated Monitoring Construction Quality ETH Zurich invites applications for a Professor of Construction Monitoring Intelligent Compaction SEPT/OCT PERFORMANCE MONITORING OF 2014 GEOTECHNICAL STRUCTURES Geotechnical Engineering. SEPTEMBER // OCTOBER 2014 DATA MANAGEMENT SYSTEM AND CONSTRUCTION MONITORING RESULTS FROM PERFORMANCE REHABILITATION → Candidates should hold a PhD degree in civil MONITORING OF WOLF CREEK DAM By Robert Bachus, PhD, PE, D.GE, M.ASCE; Jamey Rosen, PG; Rob Roff; GEOTECHNICAL Vanessa Bateman, PE, PG, M.ASCE; and Michael Zoccola, PE and/or geotechnical engineering and have a STRUCTURES strong background in mechanics of solids and geotechnical engineering design as well as proved Figure 1. Completing deep seepage cuto wall construction in tight quarters. www.asce.org/geo 33 experience in the relevant research/industry and 32 GEOSTRATA SEPTEMBER/OCTOBER 2014 Proudly published by the Geo-Institute of ASCE 9/3/14 12:54 PM 9/3/14 12:54 PM 000463_GeoStrata_SeptOct2014_FullBook_FINAL.indd 33 000463_GeoStrata_SeptOct2014_FullBook_FINAL.indd 32 9/3/14 12:53 PM teaching domains. 000463_GeoStrata_SeptOct2014_FullBook_FINAL.indd 1 GEOSTRATA Now the Best Magazine in Our Field → The candidates should have a record of out- j j I was reading the GEOSTRATA September/October issue, standing scientific/industrial achievements in and decided to send an email of thanks for the hard work. geotechnical engineering and present a well- The Editor’s Letter is very interesting, not only for the developed, novel and creative research programme summary regarding the history of the magazine (of which I with a clear emphasis on cutting edge research was not completely aware), but also for the description of (experimental research background is an asset). the new changes. I like the new format; its reorganization of topics and its visual impact make the magazine more They should be clearly committed to interdiscipli- appealing. For example, pages 32-33 attract the immediate nary research in an interdisciplinary environment. attention of any geotechnical engineer. A track record of and a strong desire to work with For many years, I considered the ICE’s Ground national and international scientific and professio- Engineering journal (from the U.K.) as the best magazine nal organisations are also important. in our fi eld, but I think these days are gone. GEOSTRATA really has become the one I look forward to reading. The → The candidates should be committed to excel- collection of topics you have put together during the past lence in education and support and implementation years is amazing. Very informative topics, easy to read and of modern teaching methods in Geomechanics follow, and always with great construction pictures. At the and Geotechnical Engineering courses. The new end of the day, that is what you want to see: amazing pictures professor will be expected to teach undergraduate that illustrate the beauty of our profession. The magazine is level courses (German or English) and graduate incredible, very enjoyable. level courses (English). They must have a vigorous Thank you very much for continually improving this maga- record of scientific publication and externally zine, for including new sections but also maintaining the older funded research or outstanding industrial achie- ones that help us to keep track of our profession. I am sure your work is appreciated by many others; it is just that we do not vements, through individual and collaborative, show it as often as we should! national or international projects.
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