This work parallels an ongoing revision of this guideline that will include the latest technical trends in equipment, wall repairs and panel joint construction, as well as an updated list of diaphragm walls completed since 2005. Our goal is to have this revised guideline available in the DFI publications catalog next year. The short course material boosted the content for our educational Slurry Walls 101 presentation. We will finalize this slide show on all aspects of diaphragm wall design, construction and QC/QA and make it avail- able to the public through DFI’s website in 2013. We will then concentrate on a similar presentation for cut-off walls and trenches. Sustainability is a topic we have dis- cussed in the last year, and the committee unanimously agreed to be proactive in identifying sustainability and environmen- tal concerns. We launched task forces on mud disposal and carbon footprint calcula- tions, and we will be working with the Sustainability Committee. Finally, we chose Washington D.C. for our 2013 seminar on cut-off and reinforced slurry walls in infrastructure projects. We hope that this event will be presented just ahead of the Rapid Excavation and Tunnel Conference scheduled for June 23-26, 2013 in Washington, D.C. COMMITTEE CHAIR TOM HART Drilled Shafts This year’s ADSC-DFI Drilled Shaft Seminar was held in Denver, Colo., September 12-13. John Hart at CTL Thompson of Denver organized the seminar. There were 114 paid attendees, and speakers included Dr. Dan Brown, Silas Nichols, Dr. John Turner, Vince Jue, Paul Macklin, Mark Vessely, Dr. John McCartney, Mike Muchard, Jack Hayes, Frank Raushe, Yajai Tinkey, Mark Vessely, John Hart and me. The location of next year’s joint seminar is still being discussed. Anyone interested in hosting or helping plan the 2013 seminar, please contact me at [email protected]. This year’s committee meeting in Denver was well attended by members of ADSC. There was a good discussion on the joint ADSC-DFI task force on rebar cage design. Dr. Tony Marinucci and Mary Ellen Bruce are leading the effort from ADSC and DFI, respectively, with Mark Petersen, chair of DFI’s Seismic and Lateral Loads Committee. The task force will work to define the problem and specific project scope, and outline the data needed to evaluate the large shear loads that are generated between hard rock and soil in COMMITTEE CHAIR J. ERIK LOEHR Deep Foundations for Landslides/Slope Stabilization The committee was actively involved in several activities during 2012 to further our objectives of advancing the state of practice for design and construction of deep foundations used for slope stabilization. The committee organized a two-day seminar in Nashville, Tenn. August 15-16 titled, “Use of Deep Foundations for Landslides/Slope Stabilization,” led by committee member, Chris Ramsey of AMEC Environment and Infrastructure. The seminar was very well attended, and participants were treated to an outstanding slate of presentations covering design and analysis methods, characteristics of specific deep foundations that have been utilized for slope stabilization, and several interesting 62 • DEEP FOUNDATIONS • JAN/FEB 2013 case histories where deep foundations have been effectively used to stabilize earth slopes. The presentations led to informative technical exchanges among presenters and attendees alike. The committee looks forward to organizing similar seminars in the future and is currently planning for our next seminar to be held in the spring of 2014, most likely in Portland, Ore., or Denver, Colo. The committee is also continuing work on developing a compendium of notable papers regarding design, analysis and construction of deep foundations for stabilization of landslides, under the leadership of Dick Short. The committee has essentially identified papers to be considered for the compendium and is beginning the review process. Additional nominations will still be considered, however, so please feel free to nominate worthwhile papers. Nom- inations can be sent directly to Dick Short (dshort@slope repair.com) or to me. Our committee membership continues to grow in our third year of existence, and we are actively seeking additional members who would like to contribute to committee activities. Persons interested in becoming members, or to contributing to committee activities are encouraged to contact DFI headquarters. lateral analysis. Dur- ing the first stage of the project, we will be gathering, cataloging and disseminating lateral load test data. Subsequent stages will evaluate how existing software analyzes these condi- tions, and the process may result in recommending new p-y models. A series of short courses may be offered through DFI and ADSC disseminating the results. Volunteers interested in tackling existing design methodologies on rebar cage design are welcome to participate. We are looking at updating the Drilled Shaft Inspector’s Manual. Kirk McIntosh of AMEC E&I volunteered to lead the effort. Please let him know if you can help ([email protected]). I also want to ask committee members what they want from their membership. Every topic is available for discussion within this group of the industry’s leading practitioners. Please don’t hesitate to begin a discussion, using the mailing list or selecting a target group. We can only improve through conversation and collaboration.
