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  • DFI
    CFA Pile Design Parameters in Sand

    By Stuart Coutts

    "This paper presents an overview of the author’s experience related to the assessment of the base capacity of straight shafted and enlarged-base bored piles in sand. A design approach based on CPT qc

    Jan 1, 1900

  • DFI
    Pile Load Testing in New York City

    By Joel Moskowitz, Jan Cermak

    "New York City has unique geologic conditions which must be considered when designing pile foundations. Where shallow foundations are not feasible, the City's subsurface conditions require a variety o

    Jan 1, 2005

  • DFI
    Low Overhead Secant Piles Drilled From Within A Shaft

    By Allen B. Stanton, Parthiv Brahmbhatt, Michael Grimm, Stanley L. Worst

    Constructing a circular shaft consisting of secant piles has its own complications which make it more difficult than typical drilled shaft construction. Add to that performing under low overhead power

    Oct 1, 2022

  • DFI
    Foundation Design And Construction Challenges For The Phoenix Sky Train Project

    By John C. Niedzielski

    The PHX Sky Train is a five mile long automated people mover system located at Phoenix Sky Harbor International Airport. Phase I of the PHX Sky Train includes the design and construction of 227 drill

    Jan 1, 2010

  • DFI
    Integrity Testing of Drilled Displacement Piles at a Major Campus

    By Mark D. Fuhriman, Parham Khoshkbari, Robert Fosse

    Drilled displacement piles are becoming an increasingly common deep foundation choice for their relatively simple installation methods, applicability to a wide range of subsurface conditions, and vers

    Sep 8, 2021

  • DFI
    Fundamentals First

    By Jeffrey C. Schuh, Logan Bloemer, Daniel P. Dietzler

    Over the past 30 years, the authors have encountered numerous projects where recognizing the geology, soil properties and groundwater conditions, and considering alternative construction techniques ha

    Jan 1, 2019

  • DFI
    Excavation Risks Adjacent to Existing Structures in Illinois and Urban Environments - Identifying and Managing Technical and Legal Issues

    By James P. Chivilo, Gregory R. Meeder, Scott J. DiFiore, Matthew H. Johnson

    New construction in metropolitan areas has direct impacts on immediate neighbors and abutters. While noise and dust are generally nuisance concerns, demolition, vibrations, excavation, and dewatering

    Jan 1, 2019

  • DFI
    Liquefaction Susceptibility Evaluation using Site-Specific Seismic Demands in the San Jose Area

    By Martin Walker, Joseph Ang, Jongwon Lee, Alvin Bayudanto, Lilian Lorincz, Morteza Khorshidi, Wenyong Rong

    This paper presents a case history of liquefaction susceptibility evaluation study for a major infrastructure project in the San José area. The subsurface material of the study area consists of Holoce

    Sep 8, 2021

  • DFI
    Case Histories of Arch Action Low Improvement Ratio Cement Column Method (ALiCC Method)

    By Jun Ohbayashi, Yoshiyuki Yagiura, Hiroaki Miyatake, Masuo Kondoh, Naotoshi Shinkawa

    "Reducing the improvement ratio of ground improvement is an extremely efficient way to reduce the construction cost and construction period of mitigation measures for soft ground. The Arch Action Low

    Jan 1, 2015

  • DFI
    On Driven Piles In The Arabian Gulf: Imperfections, Potential Challenges, And Lessons Learned

    By Waddah Akili

    The demand on pile installation in the offshore of the Arabian Gulf has, over the last two decades, experienced unprecedented boom, triggered by the construction of platforms, to help facilitate the p

  • DFI
    Construction Of The Main Tower Pier Caissons For The Greenville Bridge In Mississippi

    By F. Keith Jacobson

    To be involved in the construction of a deep dredged caisson for a major bridge pier is one of the most rewarding and professionally challenging experiences one can have in the bridge construction bus

    May 11, 2007

  • DFI
    A Novel Approach to Incorporate Shear-Moment Coupling Effects in Foundation Stiffness for Caisson Piles for Izmit Bay Bridge in Turkey

    By Arash Khosravifar, Amalia Giannakou

    "Nonlinear foundation springs for bridge caisson foundations show significant coupling between the shear force and bending moment. Implementing foundation stiffness matrix with coupling effects (off-d

    Jan 1, 2017

  • DFI
    East Boston Branch Sewer Relief Project: Support Of Excavation Case Study

    By Eric P. Bregman

    As part of an on-going effort to improve water quality and reduce discharge into Boston Harbor, the Massachusetts Water Resources Authority (MWRA) East Boston Branch Sewer Relief Project was designed

  • DFI
    East Boston Branch Sewer Relief Project: Support of Excavation Case Study (FULL Project)

    By Eric P. Bregman, Franklin M. Grynkewicz, John E. Regan

    "As part of an on-going effort to improve water quality and reduce discharge into Boston Harbor, the Massachusetts Water Resources Authority (MWRA) East Boston Branch Sewer Relief Project was designed

    Jan 1, 2017

  • DFI
    Strength Behavior of Soilcrete Improved by Cement and Metakaolin

    By Guo Qian, Du Guangyin, Deng Yongfeng, Liu Songyu, Wang Ningping

    "Metakaolin (MK) can efficiently enhance the strength and the impermeability of concretes and mortars. However, it has rarely been attempted in admixtures of cement-stabilized soils until presently. A

    Jan 1, 2015

  • DFI
    Challenges and Lessons Learned from Shoring Design of 2nd / Broadway Metro Station

    By Babak Mamaqani, Pirooz Barar

    Regional Connector Transit Corridor (RCC) is part of the Los Angeles metro expansion project under construction which adds three new stations into the system. PB&A was responsible for the design of th

    Jan 1, 2019

  • DFI
    From Linear To Circular Economy; Using Hollow Piles To Reduce Embodied Carbon And Promote Pile Reuse

    By Andrew McNamara, Stuart Norman, Matthew Dearing, Michael Pelken, Asha Panchal

    The deep foundations industry has largely remained unchanged since in the advent of CFA piling in the 1960s. Piles have consequently been designed and constructed following the traditional codes and s

    May 1, 2022

  • DFI
    Piling In Calcareous Red Bed Soils and Weak Rock Formation – Design Development for a Gas Processing Facility

    By Rick Piovesan, Pramod Rao, Nihal Bohra, Mark Wahler

    "This paper discusses the approach followed for the geotechnical design of 355 mm and 457 mm diameter driven open-ended steel pipe piles used for a gas plant at a green field site in Pilbara region in

    Jan 1, 2015

  • DFI
    Design Build of the New NY Bridge Foundations

    By Leykam Chris J., Jacobs Scott. A.

    "Construction of the New NY Bridge over the Hudson River 25 miles north of New York City is one of the largest civil infrastructure projects presently underway in the United States (formerly Tappan Ze

    Jan 1, 2016

  • DFI
    Smart Soil Improvement: The Use of Rigid Inclusions for Soil Consolidation

    By Federico Pagliacci, Claudio Asioli, Marco Chiarabelli

    """Rigid inclusions"" are a consolidation method that provides improvement of soft soils thanks to the installation of cylindrical columns made up of a material with significant and permanent cohesive

    Jan 1, 2017