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  • DFI
    Repairs Of Diaphragm Walls, Lessons Learned

    By Raymond J. Poletto

    This paper describes the special problems that occur with the construction of diaphragm walls and discusses the lessons learned during the repairs of structural walls. Although diaphragm or slurry wal

    Jan 1, 2011

  • DFI
    Case Study: The Use Of Post Tensioned Piles For Wind Turbine Foundations

    By Amr Sallam, Ahmad Mohamed, Mohamed Alrowaimi

    Renewable energy, in the form of wind and solar, has emerged as main source of energy in the modern society. The wind industry has substantially grown over the last two decades to become a key player

  • DFI
    SR167/70th Avenue East Vicinity Bridge Replacement Project

    By Reda Mikhail, M. Birkan Bayrak

    The Washington State Department of Transportation (WSDOT) State Route (SR) 167/70th Avenue East Vicinity Bridge Replacement Design-Build project is located in Fife, Washington. This $40 million projec

    Sep 8, 2021

  • DFI
    Load Testing Methods

    This Section describes four alternative methods for load testing of drilled shafts: high strain dynamic test (HSDT), rapid load test, static load test, and bottom load test. Until recently, static loa

    Jan 1, 2004

  • DFI
    Case Study: Soil Setup For Piles Driven Into Eastern Coastal Plain Deposits In Virginia

    By Sushant Upadhyaya, Deniz Karadeniz, Ahmed Mohamed

    Soil setup analysis provides opportunities for efficiencies in pile foundation design and installation. Soil setup gain with time was evaluated as part of the foundation design and installation for tw

  • DFI
    King?s Cross Station Re-Development Passive And Active Mitigation Of Tunnelling - Induced Settlement

    By Clif Kettle

    The paper will detail the design and execution of passive and active settlement control measures, the means adopted to overcome the various physical and operational constraints, and to meet specified

    Jan 1, 2008

  • DFI
    Determination of Coefficient of Modulus of Sub-Grade Reaction for Free Head Short Pile

    By Sumit Kumar Biswas, Moyukh De, Sibapriya Mukherjee

    "The piles often are also subjected to lateral (horizontal) forces and moments. In fact, there are some structures where the primary function of piles is to transfer lateral loads to the ground. Prope

    Jan 1, 2015

  • DFI
    Principles and Soil Mixing Examples of Portland Cement-Based Solidification/Stabilization Treatment

    By Charles M. Wilk

    "Solidification/stabilization (S/S) treatment is used to treat hazardous wastes for disposal and in the remediation/site restoration of contaminated land . SIS is also an increasingly popular technolo

    Jan 1, 2005

  • DFI
    Use of APG Piles for Support of New Hospital Replacement Wing in a Site Susceptible to Excessive Ground Settlement Ventura, California

    By Maria Flessas, Justin Ray, Danielle Steinmetz, Brian Zuckerman

    "The Ventura County Medical Center Hospital Replacement Wing project consists of the construction of a 2- to 3-story building with a basement encompassing the entire footprint and two corridors connec

    Jan 1, 2016

  • DFI
    p-y Curves For Analyzing Micropiles in Sandy Soils Using Lateral Load Test Data

    By Mahdi Soudkhah, Akhter Hossain

    Vertical micropiles are generally considered to be low in lateral resistance. Therefore, battered micropiles are often used when additional lateral load carrying capacity is required. However, batteri

    Jan 1, 2019

  • DFI
    Observed Driving Performance of Open-Ended Steel Pipe Piles with and Without Plugged Toes

    By Chu E. Ho, Paul Napoli

    This paper presents the performance of nineteen open-ended steel pipe piles driven through highly variable overburden soils into glacial till and schist bedrock. The piles were 16 inches in diameter a

    Jan 1, 2019

  • DFI
    Session 32 "Grout Mixtures and Materials 3"

    By Lois G. Schwarz

    I did a project (Sungai Piah) as a consultant to your firm in Malaysia, where we were faced with a similar situation as sketched out in your question. The following is what we did for the grouting of

    Feb 10, 2003

  • DFI
    Systematic Evaluation of Foundation Reuse for a Metro Station

    By Haoran Zhang, Chu Ho

    A recent design-build project in New York involved various degrees of additions and improvements to four existing transit stations. Reuse of the existing foundations was considered a more sustainable

    Sep 8, 2021

  • DFI
    Innovative Use of an Active Soil Nail Wall in Lieu of Pit Underpinning for a Historic Building

    By Tai Luu, Maxim C. Schisler, Yaser Taheri

    The Stevens Gateway Project is an expansion of the Stevens Institute campus overlooking the Hudson River in Hoboken, NJ. The plans call for 90,000 ft2 (8360 m2) of new classroom, research, and student

    Jan 1, 2019

  • DFI
    Overview of Construction and Design of Auger Cast-in-Place and Drilled Displacement Piles

    By Monica Prezzi

    "Auger cast-in-place (ACIP} piles and drilled displacement piles are being increasingly used as foundation elements for structures, particularly in projects requiring accelerated construction or invol

    Jan 1, 2005

  • DFI
    Pressure-Grouting Improves Performance of Helical Piles: A Production Case History, Static Load Test Results, and Comparisons to Predicted Lateral Deflection and Axial Resistance

    By Karen J. Dawson, Francisco Johnson

    "Pressure-grouted high strength helical displacement piles are a recently developed pile type that can be useful in conditions where noise or vibrations must be low or where access or clearance is lim

    Jan 1, 2016

  • DFI
    Non-Destructive Testing, Evaluation And Re-Use Of Deep Foundations Along The East Coast

    By Matthew E. Meyer

    Renovation, rehabilitation, restoration and expansion of existing residential, retail, commercial, hospital facilities and historic structures requires assessment and evaluation of foundation systems

    Jan 1, 2009

  • DFI
    Evaluation of Existing T-Z Models for Caliche Based on Numerical Analysis of Bi-Directional Load Tests Using NVShaft

    By Ramin Motamed, Fahim M. Bhuiyan, Raj V. Siddharthan, Joseph Toth

    The difficulty in material characterization and the erratic response of cemented soil layers, such as caliche in the Las Vegas valley, creates challenges for practicing engineers to reliably predict t

    Sep 8, 2021

  • DFI
    High-Capacity Helical Piles for Drill Trestle Support

    By Matt Fenwick, Douglas R. Schwarm

    Stringent underwater noise limits at the Fairview Ave. N. bridge replacement on Seattle's Lake Union required an innovative approach to supporting the 470-ft long drill trestle. Screw-in foundations

    Sep 8, 2021

  • DFI
    Guidelines for Selecting Cutoff Wall Systems

    By Mary Ellen Large

    This publication of Deep Foundations Institute (DFI) is intended to provide project owners, design engineers and construction professionals with guidelines for selecting cutoff wall and barrier system

    Jan 1, 2021