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Non-Destructive Testing Of Drilled Shafts and CFA Piles – Current Practice and New Method
By George Piscsalko
"Quality control of drilled shafts and CFA piles is greatly dependent upon the practices of the site personnel. In many applications it is difficult or not possible to fully inspect the shaft prior to
Jan 1, 2014
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Case History Of The Support Of Excavation System At The Dulles Automated People Mover (DAPM) Tunnels And Stations
By Marlion T. McQuinn
This paper will discuss the design, construction, and performance of the support of excavation on the Dulles East and West Automated People Mover Tunnels and Station projects. The elements of the sys
Jan 1, 2006
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Deep Excavation Retaining Systems In Unsaturated Soils
By Tariq B. Hamid
Deep excavation is commonly associated with construction of different deep below-grade structural elements (e.g., basement walls and slabs, tunnels, retaining walls, tanks, utilities, etc.) Deep Excav
Jan 1, 2006
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Modulus of Elasticity in Deep Bored Piles
By Carlos Lam, Joram M. Amir, Erez I. Amir
"Abstract The modulus of elasticity of pile material (E) is an important parameter for the interpretation of both static and dynamic loading tests on piles. This value is commonly assumed to be consta
Jan 1, 2014
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Experiences Of The Cast-In-Situ Pile Filling In Stone-Line Intercalation
By Guan Jichang
An abandened breakwater, located at the rear of No. 2 berth in Dongdu Port area of Xiamen City, was not cleaned thoroughly when the backfilling of sand started. The uncleaned stone layer was about 2 t
Jan 1, 1991
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Supported Excavation Movement Causing Lateral Displacement and Cracks in Drilled Shafts - Lessons Learned from a Case Study in Chicago
By Eric R. Borys, Amaneh E. Kenarsari, Brett Gitskin
This case study discusses impacts of excessive Earth Retention System (ERS) lateral movement at a project in city of Chicago. The ERS (cantilevered sheeting) moved inward towards the excavation and ca
Jan 1, 2018
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United States Capitol Visitor Center - Drilled Shafts, Utility Conflicts, And Communication
By Giovanni A. Bonita
The United States Capitol Visitor Center (USCVC) is one of the largest underground structures ever constructed in the Washington, DC, metropolitan area. The 600,000 ft2 (55,750 m2) structure is entir
Jan 1, 2006
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Optimising the Compressive Behavior of Screw Piles in Sand for Marine Renewable Energy Applications
By Andrew J. Brennan, Jonathan A. Knappett, Lewis Hamilton, Michael J. Brown
"Abstract This paper investigates the compressive behaviour of screw piles in sands and the key design parameters which control this. These types of foundation elements have typically been used as scr
Jan 1, 2014
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Offshore Wind Turbine Foundations - In Denmark And Belgium - Introduction
By Jørn H. Thomsen
This paper presents the experience gained and the lessons learned over the last decade within the numerous offshore foundation projects undertaken in the offshore waters of Denmark and Belgium by COWI
Jan 1, 2013
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Development of a New, Advanced form of Sodium Silicate for Chemical Grouting
By Julie Shang, Tim Evans, Michael McDonald, Yu Guo, Bingfeng Xue
Effective chemical grouting represents a technical and economic solution to many challenges related to soil stabilization and blocking the flow of water. Chemical grouts are facing increasing demands
Jan 1, 2018
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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
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Installation Parameters, Pile Performance and Importance of Testing
By Maurice Bottiau
"Abstract When addressing the performance of deep foundations, many parameters play a role, from adequate soil investigation to performance monitoring and testing. The correct understanding of pile co
Jan 1, 2014
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High-Capacity Rock Anchors Provide Uplift Resistance For Concrete-Filled Steel Pipe Piles - A Case Study
By James Weaver
During the past 16 years, the authors have successfully used high-capacity rock anchors installed inside open-ended pipe piles, driven to bedrock, to provide uplift and overturning resistance for vari
Jan 1, 2011
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Underpinning A Crane Foundation
By Donald R. McMahon
This paper presents a unique case history that documents the use of a braced secant pile wall to underpin a heavily loaded footing inside of a manufacturing plant. Construction of a pit for a new man
Jan 1, 2006
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Use Of Controlled Modulus Columns In Retail & Industrial Development Projects
By Frederic Masse
With widespread acceptance in the market place, many engineers are choosing ground improvement techniques to provide suitable foundation subgrade at sites that would have traditionally required deep f
Jan 1, 2011
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Soil Profiles Along The Alignment Of The I-880 Replacement Project
By Mark A. Willian
The purpose of this short paper is to present soil profiles and basic soils information for the portion of the I-880 Replacement Project alignment where highway structures are to be built. The informa
Jan 1, 1996
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Analysis Of Strain-Dependent Concrete Modulus From Mass Instrumented Test Pile Samples
By Lee Sieng Kai
This paper presents the result of the analysis of strain-dependent concrete modulus from full-scale static axial compression load tests conducted on more than 200 instrumented cast-in-place barrettes
Jan 1, 2006
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"Underpinning By Jet Grouting" - Summary
By George K. Burke
Underpinning of a structure has been traditionally expensive, time consuming, and, in many cases, caused as much settlement to the existing structure as it was trying to prevent. As underpinning is no
Jan 1, 1991
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Non-Destructive Testing Methods For Drilled Shaft And Acip Piles
By George Piscsalko
There are numerous methods currently available to assess the integrity of drilled shaft and ACIP piles. Each method has its advantages and limitations. This paper will compare the various available me
Jan 1, 2011
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The Pile Foundation Of Tall Buildings In Shenzhen
By Li Keqiang
This paper discusses the pile foundation of tall buildings in Shenzhen region. For 156 constructed tall buildings exceeding 18 storeys, about 86. 5 per cent of the sum. The two main types of foundatio
Jan 1, 1991