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  • DFI
    An Alternative Pile Technology

    By Rimas Veitas, James Panton, Erich Steinlechner

    "Ductile Iron Piles (DIPs) are a proven, viable alternative to conventional piles, and for the past five years have been successfully used throughout New England. The installation process of DIPs lend

    Jan 1, 2017

  • DFI
    Unified Specifications for Soil-Mixed Seepage Cutoff Walls

    By Wayne S. Smith, Erik James, Jose R. Gomez

    "Soil mixed seepage cutoff walls are increasingly being used in levee and dam modification projects nationwide. An important aspect of their overall quality depends greatly on the language included in

    Jan 1, 2016

  • DFI
    DFI 2008 Outstanding Project Award Winner Intricate Excavation for the New South Ferry Subway Station

    By Alice Arana, David M. Cacoilo, Joel L. Volterra

    "To make space for the new South Ferry Station in lower Manhattan, engineers and contractors carved out a new tunnel beneath three operating subway tunnels and tangentially to yet another tunnel. Crea

    Jan 1, 2008

  • DFI
    Execution Example of the Expanded Dry Jet Mixing (EX-DJM) Method

    By Kiyotaka Ohno, Nobushige Yasuoka, Yosuke Hioki

    "The diameter of improved columns adopted by the original DJM Method had been 1000 mm, however, in order to comply with the social need for construction cost reduction, the Expanded Dry Jet Mixing (EX

    Jan 1, 2015

  • DFI
    Recent Advances in Quiet & Vibration-less Steel Pile Installation

    By R. K. Filip

    "Steel bearing piles have long been used to carry high compressive, tensile and lateral loads. Such piles are most commonly tubular or ""H"" profile and are typically installed using percussive techni

    Jan 1, 2005

  • DFI
    Effect of Installation Method on the Ratio of Tensile to Compressive Unit Shaft Resistance of Piles in Dense Sand

    By A. C. Galvis-Castro, R. Salgado, M. Prezzi, E. Ganju, R. D. Tovar-Valencia

    It is generally accepted that the unit shaft resistance of piles in sands is lower for tensile loading than for compressive loading. So far, very little attention has been paid to the influence of the

    Jan 1, 2019

  • DFI
    Numerical and Theoretical Analysis of Consolidation of Soft Clay Installed With PVD at Nagapattinam - A Case Study

    By KeerthiRaaj Subrmanian, Muthukkumaran Kasinathan

    "A railway embankment is under construction between Nagapattinam to Thiruthuraipoondi covering 36.5 km. The sub-soil strata comprises of soft clay extending up to 10 m below existing ground level, whi

    Jan 1, 2015

  • DFI
    The Stiffening Effect of a Caliche Layer on Pile Foundations

    By Richard Stone, Rouzbeh Afsharhasani, Moses Karakouzian

    "Caliche, a hardened sedimentary deposit of calcium carbonate that occurs worldwide, generally in arid or semiarid regions, is frequently encountered in Las Vegas, Nevada. The presence of a caliche la

    Jan 1, 2015

  • DFI
    Practical Construction Considerations for Runway Extension and Taxiway Expansion over Soft/Organic Soil Using a Column Supported Load Transfer Platform

    By Brian T. Nereson, Michael C. Penney

    "This technical paper was prepared to describe the general process by which the authors designed a column-supported load transfer platform (LTP) for support of asphalt-paved runway and taxiway embankm

    Jan 1, 2016

  • DFI
    Secant Pile Top-Down Construction for a Drainage Channel in Puerto Rico: An OPA Finalist

    By Bill Shea, Gordon King

    "For a drainage channel built in San Juan, Puerto Rico, a value engineering (VE) proposal incorporating a secant pile top-down approach saved time and facilitated construction work on the larger flood

    Jan 1, 2012

  • DFI
    Drilling And Grouted Pipe Pile Foundation For Department Of Energy Spallation Neutron Source Target Building, Oak Ridge, Tennessee ? Introduction

    By Ronald E. Walkington

    The U.S. Department of Energy (DOE) is building the world's newest accelerator-based, pulsed-neutron system, called Spallation Neutron Source (SNS). The facility, located in Oak Ridge, Tennessee,

    Jan 1, 2001

  • DFI
    Risk Management and Ground Improvement Technologies in the Case of Liquefaction

    By Sebastian Fischer, Rolf Katzenbach, Steffen Leppla

    "The risk management in the case of liquefaction is one of the most serious and also difficult issues in geotechnical engineering because failure caused by liquefaction is always a sudden failure with

    Jan 1, 2015

  • DFI
    Prestressed Concrete Sheet Pile Retaining Wall to Support Railroad Embankment Widening Adjacent to a Wetland

    By Abhijit R. Sheth, Craig M. Benedict, John Brun, Ara G. Mouradian

    "Amtrak recently replaced the 1907-era bascule two-track bridge over the Niantic River between East Lyme and Waterford, Connecticut. The project included new approach embankments, with approximately 2

    Jan 1, 2017

  • DFI
    Unconventional Solutions For Construction Of A Hybrid Cut-Off Wall At The Dead Sea

    By Karsten Beekhaus, Sander W. Odijk, Rabea Bahlum, Mazin Adnan, Ayman Abdelh Al Nuaimat, Hassan Farhat

    The Arab Potash Company, APC, is one of the 10 largest potash producers of the world. The solar ponds at the Dead Sea, used for the enrichment of the salt content in the brine, are of crucial importan

    May 1, 2022

  • DFI
    Case History: Innovative Load Test Program Optimizes Pile Capacity in Challenging Ground Conditions

    By Emad Farouz, Francis A. Abreu

    "This paper presents a case history of a successful construction-phase pile load test program that optimized the pile design in challenging ground conditions at the Great Neck Wastewater Treatment Pla

    Jan 1, 2017

  • DFI
    Rehabilitation of the Kölnbrein Dam / Austria

    By Frank Haehnig, Kurt Kogler

    "With a height of 200 m, a crown width of 626 m and a concrete volume of 1.6 million m³, the Kölnbrein Dam in the upper Malta valley in Carinthia / Austria is the largest concrete dam in Austria. Boas

    Jan 1, 2016

  • DFI
    Recent Advantages of CDM-LODIC Method (Low Displacement and Control Method)

    By Yuji Yamashita, Kazuyoshi Kamimura, Tsuyoshi Takahashi, Naoya Matayoshi

    "The CDM-LODIC method (cement deep mixing - low displacement and control) method enables ground displacement to be reduced by removing an amount of soil equivalent to that of injected cement slurry an

    Jan 1, 2015

  • DFI
    Combined Piled Raft Foundation (CPRF) response

    By G. L. Sivakumar Babu, P. Chaithra

    "Raft foundations which are used against differential settlements and for carrying heavy loads can still be subjected to excessive settlements even if it is safe against bearing capacity consideration

    Jan 1, 2015

  • DFI
    Case History: Comparison of CSL Results to Physical Observations

    By David S. Graham, Paul J. Axtell

    Crosshole Sonic Logging (CSL) non-destructive integrity testing identified anomalous readings near the base of a 6.5-foot diameter drilled shaft rock socket. The anomaly was confirmed to be a defect b

    Jan 1, 2019

  • DFI
    Charleroi Locks: Repair Methods to Restore Structural Integrity of Large-Diameter Drilled Shafts

    By Alexandre Alex) J. Bredikhin

    "DISCLAIMER: the statements presented herein are those of the author and do not necessarily represent the views of US DoD or its Components.ABSTRACTProgress on the $750M lock project on the Monongahel

    Jan 1, 2017