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  • DFI
    Settlement Evaluation of Large Water Storage Tanks Under Challenging Conditions

    By Ben M. Lewis, Yogesh Prashar

    "The East Bay Municipal Utility District (EBMUD) is a major water utility service providing water to over 1.3 million people in the eastern San Francisco Bay Area. EBMUD manages 28 dams at 5 terminal

    Jan 1, 2016

  • DFI
    Slurry Walls Executed with the Cutting Soil Mixing Technique: A Case History

    By Carnevale Francesco, Bracci Laudiero Alberto, Pampanin Piero

    "SummaryIn the Port of Naples a slurry wall has been realized through a sandy layer up to a deep tuff layer using the Cutting Soil Mixing technique.The executed panels have dimensions of 2.8 m x0.65 m

    Jan 1, 2014

  • DFI
    Present To Future Design Considerations Of Deep Foundations ? 1. Introduction

    By William S. Gardner

    It is certainly an honor to have been invited to address the Deep Foundation's Annual Meeting on such a vast and weighty topic as "Present to Future Design Considerations of Deep Foundations." Ac

    Jan 1, 1991

  • DFI
    Monitoring Settlements Of A Vacuum Tower Atlas Refining Co., Shrevesport, La

    By Antal Partos

    ATLAS Processing Company Shrevesport, LA initiated a major plant expansion in 1980. SITE Engineers, Inc. provided engineering consultation regarding the foundation of the vacuum unit. Four test boring

    Jan 1, 1992

  • DFI
    The Effects Of Changes In Effective Stress On A Base Grouted Pile In Sand

    By V. M. Troughton

    Large diameter bored piles with grouted bases have been adopted for the foundations of the majority of the buildings at Canary Wharf in London's Docklands, including a deep basement car park. The

    Jan 1, 1989

  • DFI
    Assessment, Remediation And Acceptance Of Drilled Shafts Through The Use Of Csl Tests

    By Bernardo J. Jiménez Vega, Edy L. T. Montalvan PhD

    The experience gained during more than 900 Crosshole Sonic Logging (CSL) tests on drilled shafts shows the importance of establishing proper project acceptance and repair protocols. Drilled shaft eval

    Oct 1, 2022

  • DFI
    Determination of Initial Stiffness of Drilled Shafts for the Analysis of Settlements under Service Loads

    By Carlos A. Prato, Federico Pinto

    "ABSTRACTThe design of drilled shafts often incorporates large factors of safety, for which settlements under service loads are highly influenced by the initial elastic stiffness. In the case of group

    Jan 1, 2014

  • DFI
    Oldie But Goldie – Bi-Directionally Tested Foundation Piles With Base Enlargement As A Smart And Economical Alternative To Conventional Piles At Geneva, Switzerland

    By Dipl. -Ing. (FH) Thomas Schmitt, Dr. Melvin England

    Foundations in Geneva are difficult and expensive due a large overlayer of clay and silt above competent bearing material in the moraine. Common foundation schemes use deep barrettes or bored piles, f

    May 1, 2022

  • DFI
    Overview Of Earth Retaining Systems And Their Selection

    By Raymond J. Castelli

    The paper provides a general overview of the numerous types of earth retaining systems currently available, and organizes these various systems by several classification methods. These classifications

    Jan 1, 2003

  • DFI
    Recycling Jet Grout Backflow: Waste Mitigation and Cost Benefits

    By Craig T. Jones, Zachary Q. Maassen

    "Jet grouting is a method of ground improvement that relies on the erosive capacity of high-speed jets to cut and mix the ground in place with a cementitious grout. A continuous return flow of cutting

    Jan 1, 2017

  • DFI
    Utilizing Drones to Improve Project Workflows

    By Barritt Lovelace

    Collins Engineers has been researching and implementing the use of drones on Civil Engineering Projects since 2015. Applications include bridge inspection, asset management, mapping, construction site

    Jan 1, 2019

  • DFI
    Post-Grouted Drilled Shafts: A Case History Of The PGA Boulevard Bridge Project

    By Gray Mullins

    A post grouted drilled shaft foundation system was successfully used in place of the specified driven pile foundation system as a Value Engineering Cost Proposal (VECP) for the new PGA Boulevard Grade

    Jan 1, 2003

  • DFI
    Resolution Of Prestressed Concrete Pile Splice Problems - Summary

    By David Siu

    Many problems were encountered with the mechanical wedge-type splices used for the 15-inch square precast prestressed concrete piles installed at an industrial plant site. Many of the wedges were brea

    Jan 1, 1991

  • DFI
    Dynamic Load Testing of 2 Metre Steel Tubular Piles Driven into Foliated Phyllite Bedrock

    By Bosco Poon, Kim Chan, Luis Raúl Castañeda, Geoff McKay

    "Driven steel tubular piles of up to 2 m diameter have been used to support abutments and piers of a bridge over Nambucca River and floodplain. The bridge was designed by Arup-Aurecon Design Joint Ven

    Jan 1, 1900

  • DFI
    Harry Nice Bridge Geotechnical Instrumentation Case Study

    By Jeffrey Goodwin P. E., Melih Demirkan Ph. D. P. E., Kevin Tehansky P. E.

    Just an hour drive down MD 301 from National Harbor, construction to replace the Governor Harry W. Nice Memorial/Senator Thomas ‘Mac’ Middleton Bridge (HNB) began in spring of 2020. The Maryland Trans

    Oct 1, 2022

  • DFI
    Construction Considerations For Ground Modification Projects ? Synopsis

    By J. P. Welsh

    Ground Modification construction is rapidly evolving in the United States. An assessment of the construction status of Ground Modification methods with their dates of introduction and general acceptan

    Jan 1, 2010

  • DFI
    Theoretical Examination of Initially Bent Piles

    By Janne P. Isohaka, Anssi M. Laaksonen

    "Abstract In Scandinavia the use of steel pipe piles in bridge foundations started in the mid-1980s and has increased steadily since. As the piles driven in soft soils are slender, they can fail by bu

    Jan 1, 2014

  • DFI
    Westlink Projects – Geotechnical Challenges During The Execution Phase

    By Robert Thurner, Albin Norrman, Sami U. Raja

    The West Link is a double track railway project currently under construction in Gothenburg, Sweden. The project includes the construction of 8 kms of track, 6 kms of which will be in tunnels. Beside s

    May 1, 2022

  • DFI
    An Evaluation of t-z Analysis Methods

    By Kirk Ellison, Sherif Elfass, Ramin Motamed, Kevin V. Stanton

    "The determination of accurate load transfer curves are essential for estimating deep foundation loadsettlement response using t-z style analyses. While recently developed semi-empirical methods from

    Jan 1, 2017

  • DFI
    Environmental Impact Management Through Foundation System - Synopsis

    By Deshmukh A. M.

    Existence of human beings and their relationship with the nature is symbiotic. The lack of perspective and negligence of nature disturbs the equilibrium of environment and causes unprecedented disaste

    Jan 1, 1996