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  • DFI
    Woodrow Wilson Bridge Cofferdams (ef6ed0b3-5c8c-41f1-8337-00ee57bff823)

    By Roderic A. Ellman

    The new Woodrow Wilson Bridge (WWB) will replace the existing bridge over the Potomac River to connect Alexandria, Virginia to Prince Georges County, Maryland. The new WWB will extend approximately 1.

    Jan 1, 2013

  • DFI
    Deep Foundations On Deer Island

    By Michael W. Oakland

    Deer Island is the site of the Massachusetts Water Resources Authority (MWRA) wastewater treatment plant which, when completed in 1999, will serve 43 cities and towns in central eastern Massachusetts.

    Jan 1, 1994

  • DFI
    Foundation Retrofitting Using Micropiles - A Case History

    By Mohammad Nasim

    Vertical expansion of existing structures frequently requires foundation retrofitting to enhance the capacity of existing foundations for supporting additional loads. Owing to their small diameter, a

    Jan 1, 2008

  • DFI
    Wharf Reconstruction At Gasps Sandy Beach - Historic

    Port Gaspé is located on the back side of Gaspé bay and is protected by a natural sand barrier with a length of 2,5 km, from which it got its name, Gaspé Sandy Beach (1). Since 1904 the Gaspé regi

    Jan 1, 1987

  • DFI
    Evaluation Of Ultimate Resistance Of Steel-Concrete Composite Drilled Shafts Through Static Loading Tests

    By Moonkyung Chung

    Static pile load tests were performed in order to evaluate bearing capacities and mechanical behaviors of three different pile types: (1) steel-concrete composite drilled shaft with rebar reinforcemen

    Jan 1, 2010

  • DFI
    Design Of The Marine Foundations For The Skyway Project Of The San Francisco Oakland Bay Bridge

    By Gerry Houlahan

    The east span of the 3.5 km long SF-Oakland Bay Bridge is supported by different types of foundations along its span. Starting from the west, its first 460 m section comprising twin concrete box-girde

    Jan 1, 2013

  • DFI
    Concrete Piles Driven In A Coral Sand

    By L. D. Johnson

    12 groups of 12 precast prestressed (PCPS) piles were driven in the lagoon of Kwajalein Island to support a dry dock. Pre-construction investigation of the calcareous coral sands and static pile loeid

    Jan 1, 1993

  • DFI
    Reducing Downdrag Loads With Bitumen

    By J. -L. Briaud

    This presentation shows the results of laboratory and field tests to date for the NCHRP project entitled "Downdrag on Bitumen-coated Piles". This project required to test a variety of bitumens in the

    Jan 1, 1991

  • DFI
    Design, Construction, and Performance of the Temporary Earth Retention System at No. 9 Walton

    By Joel B. Dellaria, Justin R. Lewis

    "No. 9 Walton is a new high-rise condominium building located in the Gold Coast area of Chicago. The adjacent building, Walton on the Park, featured 4 levels of below grade parking and utilized a seca

    Jan 1, 2017

  • DFI
    Design Strategy For Deep Slurry Stabilized Bored Piles In Compression

    By Chu E. Ho

    Field load tests on deep slurry stabilized bored piles have shown that end bearing resistance was unreliable due to soft toe conditions caused by debris accumulation at the bottom of the hole during p

    Jan 1, 2002

  • DFI
    Differing Site Conditions

    By James J. Tansey

    A Deep Foundations Institute meeting with the University of Michigan at Ann Arbor in March of 1984 featured legal rights under Differing Site Conditions. A workshop conducted by the authors and Gerard

    Jan 1, 1985

  • DFI
    Use Of Non-Invasive Helical Foundations For Urban Forest Canopy Walk Way ? Atlanta Botanical Garden

    By David C. Kraft

    Helical piles and ground anchors were used to meet critical design and constructability requirements for an urban forest Canopy Walk at the Atlanta Botanical Garden, Atlanta, GA. The 12-foot wide ped

    Jan 1, 2011

  • DFI
    RD Pile Wall – A Water Tight Retaining Wall Structure

    By Antti J. Perala, Teemu J. Yli-Kovero

    "Efficient use of land is constantly requiring more underground construction. Minimized execution time and disturbance to surroundings and nearby structures are essential benefits for all construction

    Jan 1, 2017

  • DFI
    Environmental Considerations For Foundation Construction In The Boston Area - The New MCP

    By James V. Errico

    On October 1, 1993 the regulations for assessing and cleaning up contaminated soil and groundwater in the Commonwealth of Massachusetts were revised. These new regulations, known as the Massachusetts

    Jan 1, 1994

  • DFI
    Application Of Electro-Kinetics To Expedite Pile Setup In Kaolinite Clay

    By Susheel R. Kolwalkar

    A significant increase in the side shear capacity over a period of time is often observed in case of driven piles. This phenomenon is referred to as ?setup? or ?freeze?. This phenomenon cannot be pred

    Jan 1, 2008

  • DFI
    New Device For Load Testing Driven Piles And Drilled Shafts Separates Friction And End Bearing

    By J. Osterberg

    A new device has been developed for load testing driven piles and drilled shafts which consists of an hydraulic jack or bellows which has a telltale rod fastended to the bottom. The rod extends upward

    Jan 1, 1989

  • DFI
    Case History - Augered Cast-In-Place Piling Installed Into Weathered Sandstone

    By Edwin W. Meyer

    The augered cast-in-place piling technique was used to install deep foundations 20 feet into weathered sandstone. The project involved the upgrading of the Air Quality Control System (AQCS) for a 560

    Jan 1, 2006

  • DFI
    Presentation #1 - Deep Foundation Inspection And Integrity Testing - Introduction - Why Use Drilled Shafts?

    By Bernard Hertlein

    ¦ Drilled shafts resist scour seismic loads better than groups of driven piles ¦ Drilled shaft construction creates less noise and vibration than driving piles ¦ Drilled shafts permit direct obser

    Jan 1, 2001

  • DFI
    Friction Piles In Boston Blue Clay, Suffolk County House Of Corrections, Massachusetts ? Summary

    By Harry K. Weatherbee

    The paper presents a design case study for a four-story correction facility addition in south Boston, Massachusetts, supported on friction piles driven into the Boston Blue Clay. 356 mm (14-in.) squar

    Jan 1, 2003

  • DFI
    Field Trials for Deep Mixing in Land Remediation: Execution and Early Age Monitoring, QC and Lessons Learnt

    By Ziyad Abunada, David O’Connor, Abir Al-Tabbaa

    "Abstract Contaminated land remediation using soil mix technology (SMT) is a relatively recent development which has been shown to be a cost effective and versatile system with numerous environmental

    Jan 1, 2014