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  • DFI
    Development of Site-Specific Acceleration Response Spectra fora Liquefiable Bridge Site

    By S. Ali Bastani, Ashley Varni

    Design acceleration response spectra (ARS) are directly correlated with dynamic forces and estimated dynamic bridge displacements, which make them a critical aspect of dynamic bridge design. Nonlinear

    Jan 1, 2018

  • DFI
    Production And Testing Of 600 Reinforced-Concrete Piles For The Central Bank Of Iraq

    By H. Meseck

    The new building of the Central Bank of Iraq in Baghdad was footed in difficult underground conditions on more than 600 reinforced concrete driven piles, with cross-sectional diameters of 45 x 45 cm a

    Jan 1, 1989

  • DFI
    Helical Piles With Grouted Shafts - A Practical Overview

    By Gary L. Seider

    Helical screw piles are used in various applications including the underpinning of distressed foundations and as deep foundations for new structures. At present, maximum design loads range between 12.

    Jan 1, 2003

  • DFI
    A Case Study Supporting The Need For A Rational Method For Design And Installation Of Vibratory Driven Piles

    By Franklin M. Grynkewicz

    The subject of bearing pile performance installed by vibratory hammers has been a matter of increasing study and continued controversy. A recent case study from a major bridge replacement project is d

    Jan 1, 1991

  • 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
    Results Of An International Pile Load Testing Prediction Event

    By N. Charue

    An international prediction event was carried out within the framework of a 30-pile testing program organized in a sandy soil in Belgium (Limelette). That program called upon sev­eral testing methods:

    Jan 1, 2002

  • DFI
    Spring Constants of Belled Caissons for Seismic Retrofit of an Existing Critical Structure in a Seismically Active Area

    By David E. Albus, Ahmadreza Mortezaie, Bidjan Ghahreman

    The structural evaluation of seismic performance of an existing hospital in Long Beach, California, required spring constants of foundation elements. The structure included support by deep foundation

    Jan 1, 2018

  • DFI
    Prediction of Axial Geotechnical Resistance of Base Grouted Drilled Shafts

    By Emad Farouz, Ehab S. Shatnawi

    "The increasing demand for small deformations and high-capacity drilled shafts without enlarging drilledshaft diameters has motivated the development and increasing use of a base grouting (BG) techniq

    Jan 1, 2016

  • DFI
    Re-Use Of Foundations And The Role Of NDE Techniques

    By Huw Williams

    It is becoming increasingly common practice to re-use existing foundations for new projects, especially on urban sites where geotechnical conditions are congested. A knowledge of the foundation dimens

    Jan 1, 2006

  • DFI
    Non-Destructive Testing Of Drilled Shafts - Title ? Table Of Contents - Introduction And Overview

    By Edmund J. Cardoza

    WELCOME TO THE DEEP FOUNDATIONS INSTITUTE 26TH ANNUAL CONFERENCE AND WELCOME ESPECIALLY TO THIS SEMINAR ON NON-DESTRUCTIVE TESTING OF DRILLED SHAFTS, PRESENTED BY MEMBERS OF THE DFI DRILLED SHAFT COMM

    Jan 1, 2001

  • DFI
    Tied-Down Boat Section Construction

    By Romano J. Micciche

    One of the largest scale uses of a multiple, high-strength steel bar tiedown system is described. Tiedowns were installed to resist hydrostatic uplift forces acting on a section of the Interstate High

    Jan 1, 1994

  • DFI
    A Case Study on the Effects of Using Surcharge Fill as a Complement to Ground Improvement with Dry Deep Mixing

    By Stefan Larsson, Sebastian Adevik, Sadek Baker, Razvan Ignat

    "Abstract Uncertain strength, deformation and flow properties in dry deep mixing columns often lead to conservative choices concerning design values where the design is regularly complemented with a s

    Jan 1, 2014

  • DFI
    Alternative Design Approach for Drag Load and Downdrag of Deep Foundations within the LRFD Framework

    By Timothy C. Siegel, Derrick Dasenbrock, Rich Lamb, Paul J. Axtell

    "The axial resistance provided by deep foundations may be divided into two components: side resistance and tip resistance. The direction that the side resistance acts depends on the relative movement

    Jan 1, 2015

  • DFI
    Designed, PDA Assisted Load Tested, And Constructed Pile Foundation Provides An Economical Foundation Solution - A Case History

    By Gregory A. Stephan

    A case history of design, prediction, probe pile driving, and construction of a pile foundation for Building 3 of Waterside at Bay Beach Condominiums located in Fort Myers Beach, southwest Florida, is

    Jan 1, 2003

  • DFI
    Deep Soil Mixed Wall And Jet Grouting For An Excavation Support System At The Museum Of Fine Arts In Boston, Massachusetts

    By Harry Schnabel

    A 6200 m² cement deep soil mixed (CDSM) wall was constructed for an addition to the Museum of Fine Arts in Boston, Massachusetts. The addition was located along the east side of the existing museum wi

    Jan 1, 2011

  • DFI
    Conventional Static And Rapid Load Tests On CIDH Piers At A University Of California Berkeley Site

    By Gyimah Kasali

    Rapid Load Testing was performed as part of an extensive drilled pier testing program for the University of California Berkeley Capital Improvement Program. The purpose of the program was to: (1)

    Jan 1, 2002

  • DFI
    Ensuring Performance of Tip Post-Grouted Bored Piles (Drilled Shafts) Through a Comprehensive Quality Assurance Program

    By Mary Ellen Bruce Large, Antonio Marinucci, Silas C. Nichols

    Tip post-grouting of bored pile (drilled shaft) foundations refers to a method where cementitious grout is injected beneath the tip of a shaft to improve the overall performance of the constructed fou

    Jan 1, 2018

  • DFI
    The Advantage Of Measurement While Drilling (Mwd) For Geotechnical Site Characterization

    By Anahita Modiriasari, Benjamin S. Rivers

    Measurement while drilling (MWD) is a subsurface exploration technique associated with real-time and continuous monitoring and recording of drilling data during the drilling process. This technique ca

    Oct 1, 2022

  • DFI
    Micropile Foundations For Support Of New Bridge Structures Over Abandoned Mine

    By Timothy J. Myers

    Expansion and the economic growth in the southwestern region of Missouri necessitated the expansion of State Route 249 and the construction of a new interchange to provide service to the Joplin, Misso

    Jan 1, 2009

  • DFI
    The Silver Spring Transit Center: Design And Construction Of Drilled Shafts In An Urban Environment

    By James E. Parkes

    The Silver Spring Transit Center is a new three-level transit center that will include bus loops for County, Metro and intercity buses, parking, and retail space. It replaces an existing bus station

    Jan 1, 2011