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Articles 171751 - 171780 of 198078

Full-Text Articles in Engineering

A Non Destructive Testing Program For A Group Of Jet Grouting Columns, G. Varosio Mar 1998

A Non Destructive Testing Program For A Group Of Jet Grouting Columns, G. Varosio

International Conference on Case Histories in Geotechnical Engineering

An extensive soil improvement program was developed for the Vultri Container Terminal, Italy, located on an Hydraulic Reclamation Fill. The Office and Warehouse Building, and the Light Tower foundations were supported by Jet Grouting Columns. A testing program was developed, including coring and nondestructive testing on the columns, to verify the as built conditions. Test results show the difficulties in evaluating Jet Grouting properties with a nondestructive approach, mainly related to the complex geometry of the columns. However, the analysis and the comparison of the wave records provided suggestions on the most effective testing procedures, and on the possibility of …

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Protection Of Kamorta Island From Coastal Erosion − A Case Study, Shri Pal Mar 1998

Protection Of Kamorta Island From Coastal Erosion − A Case Study, Shri Pal

International Conference on Case Histories in Geotechnical Engineering

Soil erosion from steep banks of Kamorta Island due to rain and strong sea waves caused serious damages to slopes and threatened the safety of Helipad and Naval buildings on the Island. Two types of protective works were adopted in the area to stabilize the slopes and protect them from erosion. The adequacy of design, construction, performance and economy of these protective works are discussed in this paper. It is concluded that reinforced soil walls are more economical, easier in construction and more eco-friendly in remote islands as compared to conventional type of construction.

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Selection And Design Of Foundations For The I-15/Us 95 Interchange, Stage Ii Improvements − A Case Study, Joy J. Lee, John M. Tehaney Mar 1998

Selection And Design Of Foundations For The I-15/Us 95 Interchange, Stage Ii Improvements − A Case Study, Joy J. Lee, John M. Tehaney

International Conference on Case Histories in Geotechnical Engineering

Parsons Brinckerhoff (PB) is acting as design consultant for the Nevada Department of Transportation (NDOT) for the Stage II Improvements to the 1-15/US 95 Interchange located in Las Vegas, Nevada. The improvements to the interchange include the design and construction of seven new bridge structures. All seven structures will use drilled shaft foundation systems for support. This paper describes the selection and design of the drilled shaft foundation systems for Ramp N-MLK, a sixteen span precast segmental box girder structure. Subsurface conditions and geotechnical data for the project site are described. A comprehensive design methodology was used, including consideration of …

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Soil Improvement In Flood Plain Of The Mississippi River Using Pre-Load Fill, Mike Alizadeh, Sanjeev Kumar Mar 1998

Soil Improvement In Flood Plain Of The Mississippi River Using Pre-Load Fill, Mike Alizadeh, Sanjeev Kumar

International Conference on Case Histories in Geotechnical Engineering

The pre-load method of improvement of in-situ, fine grained soils, is frequently used in practice particularly in flood plain environments. A case history is presented in which the same method was used to induce expected settlements in the existing soils before the start of construction. Total settlements and rate of settlement were monitored at two sites for a project in Jefferson County, Missouri. The results presented show that total settlements predicted using one dimensional consolidation theory are in reasonable agreement with the measured settlements in field. The results also show that in a flood-plain environment having compressible layer consisting of …

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Use Of Jet Grouting Method For Elimination Of Suffusional Destructions Of Sand Backfilling Of Sheet Pile Wharf, I. I. Broid, G. V. Melnik Mar 1998

Use Of Jet Grouting Method For Elimination Of Suffusional Destructions Of Sand Backfilling Of Sheet Pile Wharf, I. I. Broid, G. V. Melnik

International Conference on Case Histories in Geotechnical Engineering

At the sheet wharf of Chazan port the large suffusional caverns and areas of loosy soil had been formed in sand backfilling. For elimination of them the jet grouting method had used for the first time. H was succeeded to execute the contrsuffusional curtain of complex configuration, to discover and eliminate all suffusional caverns, areas of loosy soil and openings in the sheet pile wall with help of the mentioned method. It was developed new the jet grouting monitoring method, which allows to determine the caverns of big sizes and areas of loosy soil outlines and them locations. The jet …

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Case Histories Of Damaging Earthquakes, Walter W. Hays Mar 1998

Case Histories Of Damaging Earthquakes, Walter W. Hays

International Conference on Case Histories in Geotechnical Engineering

This paper contains illustrative case histories of the principal "forensic lessons" learned from multidisciplinary postearthquake investigations [United States Geological Survey, 1993] of damaging earthquakes throughout the world. Since 1980, the most notable earthquakes include those that struck Kobe, Japan in 1995, Northridge, California in 1994, Hokkaido-Nansei-Oki, Japan and Khalari, India in 1993, Landers, California and Erzincan, Turkey in 1992, Costa Rica in 1991, the Philippines in 1990, Lorna Prieta, California in 1989, Spitak, Armenia in 1988, Mexico in 1985, and El Asnam, Algeria and Irpinia, Italy in 1980. Individually and collectively, these earthquakes have served as scientific laboratories to show …

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Case Histories For Settlement Analysis In Ground Improved By Vertical Drain, Takaharu Shogaki, Hayato Moro, Minoru Matsuo Mar 1998

Case Histories For Settlement Analysis In Ground Improved By Vertical Drain, Takaharu Shogaki, Hayato Moro, Minoru Matsuo

International Conference on Case Histories in Geotechnical Engineering

The effects of anisotropy and sample disturbance on the consolidation parameters were investigated through laboratory testing, and the degree of sample disturbance on the consolidation parameters in the periphery of the drain is evaluated. A new method for settlement analysis, taking into consideration both sample disturbance and the retardation of the consolidation in the ground improved by vertical drain, is proposed. The effects of anisotropy and sample disturbance on the consolidation parameters in the ground improved by vertical drain are given as the function of the distance from the boundary of drain. In the undisturbed zone, the ratio of the …

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An Ecotechnical Alternative: An Embankment Of Incinerated Municipal Solid Waste, Ph. Gotteland, G. Bossonney, D. Coulon Mar 1998

An Ecotechnical Alternative: An Embankment Of Incinerated Municipal Solid Waste, Ph. Gotteland, G. Bossonney, D. Coulon

International Conference on Case Histories in Geotechnical Engineering

Incineration seems to be one of the best solutions to solve the problem of household refuse disposal. In compliance with European legislation, part of this incinerated refuse, could be used in public works. The authorities are fully aware of the high economic stakes involved, and this is the reason why they would like to control and define the conditions of use of such incinerated refuse. An innovative alternative is presented in this paper, involving the use of slag from Municipal Solid Waste Incineration (I.M.S.W.R.), lightened by the inclusion of old tyres, and strengthened with a layer of geosynthetics, in order …

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A Municipal Landfill Cover With A Paper Sludge Barrier Layer, Carsten H. Floess, Warren A. Harris Iv, Horace K. Moo-Young Jr., Thomas F. Zimmie Mar 1998

A Municipal Landfill Cover With A Paper Sludge Barrier Layer, Carsten H. Floess, Warren A. Harris Iv, Horace K. Moo-Young Jr., Thomas F. Zimmie

International Conference on Case Histories in Geotechnical Engineering

The Corinth landfill closure project was the first in New York State to use paper sludge as alternative barrier layer material in a landfill cap. The use of paper mill sludge in the cap reduced cost relative to a conventional clay or geomembrane cap system. The beneficial reuse of the paper sludge also saved landfill space. To demonstrate the feasibility of using paper sludge as barrier layer material, extensive research was conducted to evaluate the physical properties of the sludge, primarily hydraulic conductivity. Centrifuge model tests were conducted to simulate infiltration through the cap over a 30 year period. Centrifuge …

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Research On Crack Depth Measurement In Concrete By Using Rayleigh Waves, Wei Xinjiang, Xia Tangdai Mar 1998

Research On Crack Depth Measurement In Concrete By Using Rayleigh Waves, Wei Xinjiang, Xia Tangdai

International Conference on Case Histories in Geotechnical Engineering

The possibility of crack depth measurement in concrete by using Rayleigh waves and the feasibility of measurement method are3 introduced in this paper. The principle of crack measurement in concrete by using in-plan Rayleigh waves and the measurement analysis method are studied by using finite clement method.

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Alcanena Industrial Waste Landfill − Description Of A Portuguese Case History, L. M. Pissara, N. Guedes, J. Garrido, M. L. Lopes, C. C. Freitas Mar 1998

Alcanena Industrial Waste Landfill − Description Of A Portuguese Case History, L. M. Pissara, N. Guedes, J. Garrido, M. L. Lopes, C. C. Freitas

International Conference on Case Histories in Geotechnical Engineering

Alcanena is a municipality located in the center of Portugal where about 85% of the Portuguese tanning industries are located, representing 65% of the national production. During decades the industrial waste was disposed directly in the soil and the waste waters discharged into the river without any treatment. Following the recent Portuguese environmental policy, the national authorities decided to rehabilitate this area. First, by the construction of a waste water treatment plant (WWTP) and a impermeabilized lagoon for WWTP mud deposition, then by the construction of a landfill for deposition of the tanning scraps and, finally, when the maximum capacity …

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Design Of Contaminated Dredged Fills Utilizing Geosynthetics, Ronald C. Chaney, Kenneth Demars, Gregory N. Richardson Mar 1998

Design Of Contaminated Dredged Fills Utilizing Geosynthetics, Ronald C. Chaney, Kenneth Demars, Gregory N. Richardson

International Conference on Case Histories in Geotechnical Engineering

Throughout the Great Lakes, about four million cubic yards of sediments are dredged annually to maintain navigation in channels and harbors for commercial, military and recreational users, and as part of environmental projects. CDF design criteria based on contaminant level and partitioning potential of sediments is presented. CDF designs reflect the level of isolation which the sediments under consideration warrant. In this paper the application of geosynthetic components for limiting contaminant pathways in the CDF containment basin and final closure arc discussed.

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Test Fill To Determinate The Compression Behavior Of A Closed Industrial Waste Landfill 10.07, Wayne R. Bergstrom, Patrick Dugan Mar 1998

Test Fill To Determinate The Compression Behavior Of A Closed Industrial Waste Landfill 10.07, Wayne R. Bergstrom, Patrick Dugan

International Conference on Case Histories in Geotechnical Engineering

A test fill was constructed over a closed, industrial waste landfill located in southeastern Michigan. The objective of this test fill was to evaluate the immediate and time-dependent response of the existing landfill to an increase in load. The closed landfill contains a widely varying mixture of non-hazardous industrial wastes such as foundry sand, ash, and wastewater treatment sludge. It also contains construction and demolition debris. The surface of the landfill is relatively flat and, at the site of the test fill, is underlain by approximately 30 feet (9.1 m) of waste, some 15 feet (4.6 m) of which is …

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Sonic Integrity Test On Piles Founded In Bangkok Subsoil: Signal Characteristics And Their Interpretations, Narong Thasnaipan, Aung Win Maung, Ganeshan Baskaran Mar 1998

Sonic Integrity Test On Piles Founded In Bangkok Subsoil: Signal Characteristics And Their Interpretations, Narong Thasnaipan, Aung Win Maung, Ganeshan Baskaran

International Conference on Case Histories in Geotechnical Engineering

Sonic integrity testing is a common method used to test the integrity of piles in Bangkok. An acoustic technique equipped with computer software, developed by TNo. PDL IFCO, etc. is commonly used to test the piles. This paper presents the signal characteristics and their interpretations from sonic integrity test performed on mainly bored piles varying in length, size, construction method and founded soil strata. Toe reflection of small bored piles (diameter of 0.35m to 0.60m) constructed in Bangkok subsoil can be observed for pile length of up to 20m to 24m. Beyond 35m below the ground, visibility of toe reflection …

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Case Histories Of Engineering Vibrations. Paper No. Gr-Iv, George M. S. Manyando, Sanjeev Kumar Mar 1998

Case Histories Of Engineering Vibrations. Paper No. Gr-Iv, George M. S. Manyando, Sanjeev Kumar

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of Forensic Engineering "Where Things Went Wrong". Paper No. Gr-Viii, Richard Wesley Stephenson Mar 1998

Case Histories Of Forensic Engineering "Where Things Went Wrong". Paper No. Gr-Viii, Richard Wesley Stephenson

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of Geotechnical And Hydrological Management And Remediation Of Solid, Hazardous And Low-Level Radioactive Wastes, Including Liner Cover Systems. Paper No. Gr-X, Carsten H. Floess, Mary C. Lamie, Wayne R. Bergstrom Mar 1998

Case Histories Of Geotechnical And Hydrological Management And Remediation Of Solid, Hazardous And Low-Level Radioactive Wastes, Including Liner Cover Systems. Paper No. Gr-X, Carsten H. Floess, Mary C. Lamie, Wayne R. Bergstrom

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of Soil Improvement, Grouting, Geosynthetics, Dynamic Compaction, Vibroflotation, Blasting And Other Methods Including Geo Economics. Paper No. Gr-Vii, Steven J. Winter Mar 1998

Case Histories Of Soil Improvement, Grouting, Geosynthetics, Dynamic Compaction, Vibroflotation, Blasting And Other Methods Including Geo Economics. Paper No. Gr-Vii, Steven J. Winter

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Authors Index, Multiple Authors Mar 1998

Authors Index, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Meet Our Authors, Multiple Authors Mar 1998

Meet Our Authors, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors Mar 1998

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Conference Program, Shamsher Prakash Mar 1998

Conference Program, Shamsher Prakash

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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List Of Sessions, Multiple Authors Mar 1998

List Of Sessions, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Keynote Lecture: "Creating Case Histories The Hard Way", Ralph B. Peck Mar 1998

Keynote Lecture: "Creating Case Histories The Hard Way", Ralph B. Peck

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Foundation Design And Performance Of The World's Tallest Building, Petronas Towers, Clyde N. Baker Jr., Elliott Drumright, Leonard M. Joseph, Ir. Tarique Azam Mar 1998

Foundation Design And Performance Of The World's Tallest Building, Petronas Towers, Clyde N. Baker Jr., Elliott Drumright, Leonard M. Joseph, Ir. Tarique Azam

International Conference on Case Histories in Geotechnical Engineering

The analysis and design of foundations for the World's Tallest Building are described. The results of the exploration and in-situ testing program required to define the foundation support conditions are presented. The Towers are supported on a mat foundation on barrettes in residual soil and weathered silt stone, sandstone formation overlying karstic limestone at depths ranging from 80 to more than 200 meters. The extensive grouting program required to fill major cavities in the limestone beneath the Tower mats is described. The settlement analysis performed utilizing modulus information developed from the in-situ testing program is outlined. Barrette lengths were varied …

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Recent Experiences Of Tunneling And Deep Excavations In London, R. J. Mair Mar 1998

Recent Experiences Of Tunneling And Deep Excavations In London, R. J. Mair

International Conference on Case Histories in Geotechnical Engineering

The paper focuses on recent developments in tunnelling and deep excavations in London and it draws on the experiences of the Jubilee Line Extension project which has just been completed. A brief historical review is given of the first tunnels and deep excavations undertaken in London some 150 years ago. Construction methods recently used for bored tunnelling include sprayed concrete linings and closed face pressurised tunnelling machines. Ground movements observed for these various tunnelling operations and for deep excavations are reviewed, and their effects on buildings are discussed. The most extensive protective measure used on the Jubilee Line Extension to …

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A Recent Difficult Foundation Problem: The Case Of The New Tagus Bridge, Pedro Simão Sêco E Pinto, Ricardo Oliveira Mar 1998

A Recent Difficult Foundation Problem: The Case Of The New Tagus Bridge, Pedro Simão Sêco E Pinto, Ricardo Oliveira

International Conference on Case Histories in Geotechnical Engineering

A brief description of the New Tagus Bridge is presented. The main site geological conditions and the field and laboratory tests are described. The seismic studies related to the design spectra, the liquefaction potential assessment and the seismic pile analysis are presented. The pile load tests (both static and dynamic) carried out on trial piles are described. The objectives of reception tests for piles and monitoring during the construction phase and the long term are presented.

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From The Past To The Future Of Landfill Engineering Through Case Histories, R. Kerry Rowe Mar 1998

From The Past To The Future Of Landfill Engineering Through Case Histories, R. Kerry Rowe

International Conference on Case Histories in Geotechnical Engineering

The advances in landfill engineering are outlined based on a number of case histories illustrating past problems, hydraulic performance of clay liners, diffusive transport through liners, hydraulic containment and clogging of leachate collection systems. The importance of conventional geotechnical considerations (e.g. stability) will also be highlighted with reference to a number of cases. Finally, the recent advances in landfill operations are illustrated with respect to a modern landfill. It is concluded that, provided all key failure mechanisms are considered in the design, construction and operation of the facility, modern landfills should provide environmental protection both today and well into the …

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Risk And Reliability In Geotechnical Engineering, Suzanne Lacasse, Farrokh Nadim Mar 1998

Risk And Reliability In Geotechnical Engineering, Suzanne Lacasse, Farrokh Nadim

International Conference on Case Histories in Geotechnical Engineering

Statistics, reliability analyses and risk estimates can be very useful decision-making tools in geotechnical problems. Yet the methods are little used in practice. The offshore and mining industry are at the forefront for the use of these approaches, having encouraged their use and sponsored research that has enabled the methods to be well-documented and of proven usefulness in the study of alternatives for design and decision-making in face of uncertainties. The paper presents a few case studies in different areas of geotechnical engineering and discusses the results that would have been obtained without the use of the risk approach. Special …

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State Of The Art Of Soil Improvements With Case Histories, Joseph P. Welsh Mar 1998

State Of The Art Of Soil Improvements With Case Histories, Joseph P. Welsh

International Conference on Case Histories in Geotechnical Engineering

Soil improvement techniques for geotechnical construction can be broadly classified as densification, reinforcement, adhesion and excavation/replacement. This paper presents an overview of selected soil improvement techniques, with significant case histories. The soil improvement techniques discussed include Vibro-Compaction, Vibro-Replacement (stone columns), Dynamic Deep Compaction, compaction grouting, chemical grouting, jet grouting and soil fracture grouting.

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