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2004

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Articles 1141 - 1170 of 2785

Full-Text Articles in Engineering

The Use Of Monitoring Data And Geologic Documentation As A Basis For Defining Rock Mass Behavior Types For Tunnelling, Edward A. Button, Wulf Schubert, Gunter Riedmueller Apr 2004

The Use Of Monitoring Data And Geologic Documentation As A Basis For Defining Rock Mass Behavior Types For Tunnelling, Edward A. Button, Wulf Schubert, Gunter Riedmueller

International Conference on Case Histories in Geotechnical Engineering

The use of geodetic surveying to measure the absolute 3-D tunnel displacements has provided new opportunities to evaluate the system behavior and interpret the rock mass behavior associated with tunneling. For a meaningful case history evaluation it is necessary to have consistent and quality documentation covering the excavation and support sequence, the geological conditions, as well as the displacement measurements. Combing this data allows the rock mass behavior type to be evaluated. In contrast to many available rock mass characterization or classification procedures, the procedure introduced by the Austrian Society for Geomechanics within the Guideline for the Design and Construction …

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Evaluation Of Rock Characteristics For A Power Plant Site In India, A. Boominathan, S. R. Gandhi, J. Elango, C. Sivathanu Pillai Apr 2004

Evaluation Of Rock Characteristics For A Power Plant Site In India, A. Boominathan, S. R. Gandhi, J. Elango, C. Sivathanu Pillai

International Conference on Case Histories in Geotechnical Engineering

Extensive geotechnical and geophysical investigations were carried out for a power plant site situated on the east coast of southern India. It is proposed to construct the foundation on rock at a depth of 18.0 m below the ground level. The geological and geotechnical characterization of the rock have been presented in this paper. Extensive boreholes were drilled up to 40.0 m to 60.0 m depth and a few boreholes up to 120.0 m depth from the ground level. Seismic crosshole tests were conducted at soil/rock strata upto 65.0 m depth for the determination of S-wave and P-wave velocity at …

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Rock Tunnelling With Tbms On The East Side Access Project A New Perspective, Subal Sarkar, Amitabha Mukherjee, Aomar Benslimane Apr 2004

Rock Tunnelling With Tbms On The East Side Access Project A New Perspective, Subal Sarkar, Amitabha Mukherjee, Aomar Benslimane

International Conference on Case Histories in Geotechnical Engineering

The East Side Access (ESA) Project to connect the Long Island Railroad to New York’s Grand Central Terminal in Manhattan will be one of the largest tunneling projects ever undertaken in New York. The Manhattan segment of the project includes a series of tunnels and caverns that will be excavated in rock to connect the existing 63rd Street tunnels to twin three-level station caverns beneath Grand Central Terminal, accommodating eight tracks and four platforms. A comprehensive geotechnical investigation program has been conducted and the data has been analyzed to develop a geological model along the tunnel route and rock mass …

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Groundwater Abstraction From Aquitard, Aquiclude And Thin Aquifer In Barind, M. Asad Uz Zaman Apr 2004

Groundwater Abstraction From Aquitard, Aquiclude And Thin Aquifer In Barind, M. Asad Uz Zaman

International Conference on Case Histories in Geotechnical Engineering

Barind is the land where the quality of life is inextricably linked to the availability of water. We are trying to help the section of people of such area where water is considered only from the viewpoint of quantity; they do not have the scope to think from quality aspect for their survival. The scale of poverty level here is normally measured on the basis of per capita income; however, to give a better indication about the quality of life, the accessibility for food, education, health, safe drinking water, sanitation, medicine and social empowerment for decision-making should also be included …

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Geo-Mechanical Modelling For Optimization Of Rock Slope In An Opencast Coal Mine, Masoud Monjezi, T. N. Singh, Amit Pandey, Saurabh Puri Apr 2004

Geo-Mechanical Modelling For Optimization Of Rock Slope In An Opencast Coal Mine, Masoud Monjezi, T. N. Singh, Amit Pandey, Saurabh Puri

International Conference on Case Histories in Geotechnical Engineering

Jharia Coalfield, in India, is a prime storehouse of the coking coal. It contains as many as thirty contiguous seams. Multiplicity of seams has contributed to a number of problems, fire, inundated workings, goaf out area and disturbed strata condition. However, due to various geotechnical problems, it was not possible to fully extract coal by underground mining method. Opencast mining is now planned for extraction of virgin coal seams upto an ultimate depth of 500 m for ensuring maximum resources recovery. There are various modeling methods to analyze the behaviour of slopes. To achieve the objective for ensuring the safe …

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Strutural Damage Induced By Pyritic Shale, Shad E. Hoover, Mian C. Wang, Brian Dempsey Apr 2004

Strutural Damage Induced By Pyritic Shale, Shad E. Hoover, Mian C. Wang, Brian Dempsey

International Conference on Case Histories in Geotechnical Engineering

The Evangelical Hospital located in Lewisburg, Pennsylvania has experienced distress in the form of cracked floor slabs and displaced structural steel due to swelling of the underlying fill material and natural bedrock formation. The bedrock consisted of black, pyritic, calcareous shale from the Marcellus Formation of the Hamilton Group (Devonian Age). The fill materials beneath the cracked concrete floor slabs consisted of the weathered shale fragments from this formation. Although mitigating the structural distress has been attempted, the building continued to experience problems relating to the swelling of the underlying bedrock materials. The expansion of the shale could be attributed …

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Tilting Of A Historic Façade During Construction Works – Geotechnical Cause And Effect On The Stiffening System, Rolf Katzenbach, Alexandra Weidle, Helmut Hoffmann Apr 2004

Tilting Of A Historic Façade During Construction Works – Geotechnical Cause And Effect On The Stiffening System, Rolf Katzenbach, Alexandra Weidle, Helmut Hoffmann

International Conference on Case Histories in Geotechnical Engineering

This article reports on a 5-storey historic building which was completely cored to build a new one inside its historic façades. A bending resistant steel framework was installed inside the construction ground and tied positively with the façades to stiffen them during construction works. Vertical loads were taken by a jet grouting gravity retaining wall, which also acted as supporting system for the building pit. To carry lateral loads the framework was tied back into the ground by vertical and inclined pre-stressed anchors. Several months after installing the gravity walls, just after the end of the demolition works and after …

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Improvement Of Fine Sand Properties With Water Soluble Epoxy Resin Grouts, Costas Anagnostopoulos, Evangelos Stavridakis, Ioannis Grammatikopoulos Apr 2004

Improvement Of Fine Sand Properties With Water Soluble Epoxy Resin Grouts, Costas Anagnostopoulos, Evangelos Stavridakis, Ioannis Grammatikopoulos

International Conference on Case Histories in Geotechnical Engineering

It is generally accepted, that only chemical grouts or solutions are available to penetrate and fill narrow joints or soils with very small pore size. During the last 30 years, a few hundreds of different compounds have been used for this purpose. Such materials show a wide spectrum of properties. Epoxy resins are some of the common compounds which are used in chemical grouting due to their high strength and durability against mechanical or physical erosion. In this paper, the improvement of physical and mechanical properties of fine sand injected with a water soluble, two component epoxy resin is investigated. …

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Soil Improvement Using Deep Dynamic Compaction, Omar M. Alsamman, George P. Kelley Apr 2004

Soil Improvement Using Deep Dynamic Compaction, Omar M. Alsamman, George P. Kelley

International Conference on Case Histories in Geotechnical Engineering

The use of a conventional shallow foundation system in the construction of a baseball stadium on the Delaware River waterfront was only possible by improvement of existing soils using deep dynamic compaction (DDC). Subsurface conditions at the site consisted of 5 ft to 15 ft of miscellaneous fill materials overlying up to 10 ft of soft river sediments over dense sand. Numerous obstructions and old foundations were found in the fill making pile driving difficult and extremely expensive. Several foundation designs and ground improvement alternatives were evaluated for building support. A deep dynamic compaction soil improvement plan was designed to …

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Design Of Lightweight Fills For Road Embankments On Boston's Central Artery/Tunnel Project, Hany L. Riad, Anthony L. Ricci, Peter W. Osborn, David A. D'Angelo, John S. Horvath Apr 2004

Design Of Lightweight Fills For Road Embankments On Boston's Central Artery/Tunnel Project, Hany L. Riad, Anthony L. Ricci, Peter W. Osborn, David A. D'Angelo, John S. Horvath

International Conference on Case Histories in Geotechnical Engineering

The use of lightweight-fill materials for highway construction increased significantly worldwide during the 1990s. Predominant with this trend was the increased use of cellular geosynthetics (geofoams and geocombs), especially block-molded expanded polystyrene (EPS) geofoam, on highway and bridge embankments. EPS geofoam is increasingly recognized as an important tool for reducing overall cost of highways through "accelerated construction". Thus, it was appropriate that lightweight-fill materials, mostly EPS, were the materials of choice on Boston’s Central Artery/Tunnel (CA/T) Project, commonly known as the "Big Dig". EPS highway embankments have been constructed, as part of a cost-and schedule-initiative, replacing the original design concepts …

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A Novel Approach To Remediation Of A Waterfront Chromium Facility, Christian Lavallee, Raj Rajaram Apr 2004

A Novel Approach To Remediation Of A Waterfront Chromium Facility, Christian Lavallee, Raj Rajaram

International Conference on Case Histories in Geotechnical Engineering

A chromium ore processing facility in Maryland was mandated by the State to undertake remedial steps to prevent further migration of contaminants to the soil, groundwater and surface water. The owner of the facility entered into a Consent Decree (CD) with the U.S. Environmental Protection Agency (EPA) and Maryland Department of the Environment (MDE) to submit and execute a remedial design based on findings of site investigations. These investigations found that the soils were contaminated with hexavalent chromium. Additionally, both the shallow and deep aquifers, and surface water were found to be contaminated with chromium. The remedial action completed at …

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The Use Of Eps Geofoam Lightweight Fill In Hollywood, Fl, M. E. Meyer, L. Zhou, C. M. Gonzalez Apr 2004

The Use Of Eps Geofoam Lightweight Fill In Hollywood, Fl, M. E. Meyer, L. Zhou, C. M. Gonzalez

International Conference on Case Histories in Geotechnical Engineering

Expanded Polystyrene (EPS) Geofoam lightweight fill permitted elevation of a loading dock and access roadway to facilitate offloading of banquet/convention center and hotel supplies, products, etc. directly into the second floor of a development underlain with highly compressible soils, in Hollywood, Florida. Similar roadways had been previously constructed using conventional filling techniques and have resulted in continual maintenance problems and grade separation between pile supported structures and roadways supported on filled ground. The South Florida barrier island geology and interior mangrove swamp areas, which are reclaimed land formed through the use of dredging and hydraulic filling operations in the early …

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Erskine Street Interchange, Gregory Biesiadecki, Diane Porciello Apr 2004

Erskine Street Interchange, Gregory Biesiadecki, Diane Porciello

International Conference on Case Histories in Geotechnical Engineering

Erskine Street Interchange is a new roadway interchange constructed in Brooklyn, New York in 2002. Challenges addressed in construction of the interchange included poor foundation conditions, such as the presence of hydraulic sand fill, a weak cohesive deposit, an approximately 30-year old municipal waste landfill beneath portions of the abutment ramps, and the presence of one of the most important commuter roadways in Brooklyn and Queens, the Belt Parkway, immediately adjacent to the construction site. How these challenges are addressed in the final design and construction of the Erskine Street Interchange will be discussed. The design consists of on grade …

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Foundation Optimization And Design For Replacement Of The Woodrow Wilson Bridge, Roderic A. Ellman Jr., Sissy Nikolaou, Mishac K. Yegian Apr 2004

Foundation Optimization And Design For Replacement Of The Woodrow Wilson Bridge, Roderic A. Ellman Jr., Sissy Nikolaou, Mishac K. Yegian

International Conference on Case Histories in Geotechnical Engineering

The new Woodrow Wilson Bridge (WWB) will replace the existing bridge over the Potomac River to connect Alexandria, Virginia to Prince Georges County, Maryland. The new WWB will extend approximately 1.1 miles across the river, with a 367-ft long bascule span in the main river channel where the water depth is about 36 ft. The subsurface soil profile consists of up to 50 ft of a soft organic silty clay layer that is very vulnerable to scour, underlain by a deep deposit of hard sandy clay. This paper will present results from a Pile Demonstration Program (PDP) that was conducted …

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Multiple Tunnels In Soil With Shotcrete Linings On Tren Urbano, San Juan, Puerto Rico, William H. Hansmire, Victor S. Romero, Michael T. Mcrae Apr 2004

Multiple Tunnels In Soil With Shotcrete Linings On Tren Urbano, San Juan, Puerto Rico, William H. Hansmire, Victor S. Romero, Michael T. Mcrae

International Conference on Case Histories in Geotechnical Engineering

Tunnelling was part of the new Tren Urbano transit system in San Juan, Puerto Rico. Four tunnels in soil were designed and constructed with shotcrete linings using the sequential excavation method (SEM), which uses some aspects of the New Austrian Tunneling Method (NATM). Four 6-m-diameter tunnels of about 100 m in length were required to preserve two historic structures located above the subway alignment. Two of the four tunnels were constructed as part of a turnout to a future line. Cover over the SEM tunnels ranges from 20 to 5 m. Some of the tunnels are located less than 1 …

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A Methodology To Predict The Remaining Service Life Of Cscps, Jay N. Meegoda, Thomas M. Juliano, Mutiu G. Ayoola, Sunil Dhar Apr 2004

A Methodology To Predict The Remaining Service Life Of Cscps, Jay N. Meegoda, Thomas M. Juliano, Mutiu G. Ayoola, Sunil Dhar

International Conference on Case Histories in Geotechnical Engineering

Despite the fact that corrugated steel culvert pipe (CSCP) is widely used for stream crossings and drainage in many transportation systems in the US, historically, very little has been done regarding its condition assessment and planned maintenance. This research provides a methodology for developing a comprehensive plan for inspection, cleaning, condition assessment and prediction of remaining service of CSCP. Inspection frequency guidelines were developed based upon culvert size, age, importance and environmental factors, e.g., corrosion and erosion, bed load and pH. The CSCPs are classified into three levels according to increasing need for inspection, e.g., annual inspections are recommended for …

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Errors In Design Leading To Pile Failures During Seismic Liquefaction, Subhamoy Bhattacharya, Malcolm Bolton Apr 2004

Errors In Design Leading To Pile Failures During Seismic Liquefaction, Subhamoy Bhattacharya, Malcolm Bolton

International Conference on Case Histories in Geotechnical Engineering

Collapse of piled foundations in liquefiable soils has been observed in the majority of the recent strong earthquakes despite the fact that a large margin of safety is employed in their design. This paper critically reviews the current design methods and the underlying mechanism behind them. The current method of pile design under earthquake loading is based on a bending mechanism where the inertia and slope movement (lateral spreading) induce bending in the pile. This paper shows that this hypothesis of pile failure cannot explain some observations of pile failure. It has been identified that the current design codes of …

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One-Dimensional Shear Wave Profiling For V30 And Nehrp Soil Classification Using The Refraction Microtremor (Remi) Method, Satish Pullammanappallil, William Honjas, John N. Louie Apr 2004

One-Dimensional Shear Wave Profiling For V30 And Nehrp Soil Classification Using The Refraction Microtremor (Remi) Method, Satish Pullammanappallil, William Honjas, John N. Louie

International Conference on Case Histories in Geotechnical Engineering

The refraction microtremor (ReMi) method uses standard P-wave, refraction recording equipment to record ambient noise and then uses a wavefield transformation to produce Rayleigh wave dispersion curves from which average one-dimensional shear-wave profile of the subsurface can be derived. The combination of commonly available equipment, simple recording with no source, a wavefield transformation data processing technique, and an interactive Rayleigh-wave dispersion modeling tool exploits the most effective aspects of the microtremor, spectral analysis of surface wave (SASW), and multichannel analysis of surface wave (MASW) techniques. It overcomes several of the problems afflicting other techniques for estimating shallow shear velocities that …

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Past Proceedings: 4th International Conference On Recent Advances In Geotechnical Earthquake Engineering & Soil Dynamics (2001), Multiple Authors Apr 2004

Past Proceedings: 4th International Conference On Recent Advances In Geotechnical Earthquake Engineering & Soil Dynamics (2001), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Fifth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors Apr 2004

Fifth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Steering Committee, Multiple Members Apr 2004

Steering Committee, Multiple Members

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Table Of Contents - Papers, Multiple Authors Apr 2004

Table Of Contents - Papers, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Keynote Address: Case Histories In Early Soil Mechanics, Ralph B. Peck Apr 2004

Keynote Address: Case Histories In Early Soil Mechanics, Ralph B. Peck

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Success And Failure In Predicting Pile Performance, Harry G. Poulos Apr 2004

Success And Failure In Predicting Pile Performance, Harry G. Poulos

International Conference on Case Histories in Geotechnical Engineering

This paper reviews the anatomy of predictions for pile and pile group performance, and discusses the various facets of the prediction process. A series of case histories is presented in which successful predictions were made of the pile performance. Most of these cases involve a single pile or a small group of piles. A further series of case histories is then discussed in which the predictions were far less successful. Most of these cases involve larger pile groups. The reasons for the success or otherwise of the predictions are discussed, and it is concluded that successful predictions require a combination …

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The World Trade Center “Bathtub”, A Case History, George J. Tamaro Apr 2004

The World Trade Center “Bathtub”, A Case History, George J. Tamaro

International Conference on Case Histories in Geotechnical Engineering

In 1967 the Port Authority of New York and New Jersey (PANYNJ) undertook the construction of the World Trade Center (WTC) diaphragm (slurry) walls, installation of the lateral support system and the excavation of the site, commonly referred to as the “Bathtub”. The work took two years to complete. In 2001 the City of New York undertook the re-excavation of the site after the terrorist attacks. The recovery work took eight months to complete. When the World Trade Center Recovery Effort officially concluded on May 30, 2002, reconstruction was already underway. The Port Authority of New York and New Jersey …

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34th Conference On Senior Engineering Design Projects, College Of Engineering And Applied Sciences Apr 2004

34th Conference On Senior Engineering Design Projects, College Of Engineering And Applied Sciences

Senior Engineering Design Conference

The 34th Conference on Senior Engineering Design Projects was held on April 13, 2004 at the College of Engineering and applied Sciences on the Parkview Campus of Western Michigan University. The college sponsors the conference to showcase the work of its graduating seniors, who are required to complete a capstone project that puts into practice what they have learned. Many of the projects are sponsored by business and industry.

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Disclaimer, Shamsher Prakash Apr 2004

Disclaimer, Shamsher Prakash

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Preface, Shamsher Prakash Apr 2004

Preface, Shamsher Prakash

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Financial Co-Sponsors, Multiple Members Apr 2004

Financial Co-Sponsors, Multiple Members

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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An Evaluation Of The Load-Displacement Behavior And Load Test Interpretation Of Micropiles In Rock, Andrew G. Cushing, Scott A. Stonecheck, Bradley D. Campbell, Scott D. Dodds Apr 2004

An Evaluation Of The Load-Displacement Behavior And Load Test Interpretation Of Micropiles In Rock, Andrew G. Cushing, Scott A. Stonecheck, Bradley D. Campbell, Scott D. Dodds

International Conference on Case Histories in Geotechnical Engineering

This paper summarizes a series of never-before reported axial compression load tests conducted on single micropiles that are embedded in or constructed on rock. These data are augmented by load tests on similar micropiles that have been reported by others. The observed displacements at the maximum test load (QMAX) and reported unfactored design load (QDL) are summarized. In addition, the small-strain load-displacement behavior of these foundations is evaluated by comparing the initial tangent slope (IS) to the theoretical elastic slope (ES), which is calculated by modeling the micropile as a free-standing column exhibiting fully -composite behavior. The data demonstrate that …

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