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1998

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Articles 691 - 720 of 1354

Full-Text Articles in Engineering

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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Pile Foundation Construction For The Buckman Bridge Jacksonville, Florida, Raymond J. Castelli, Mohamad Hussein Mar 1998

Pile Foundation Construction For The Buckman Bridge Jacksonville, Florida, Raymond J. Castelli, Mohamad Hussein

International Conference on Case Histories in Geotechnical Engineering

This paper describes the geotechnical issues related to pile foundation construction for the widening of the 1-295 Buckman Bridge over the St. John's River in Jacksonville. Florida. The project included a total of 1351 prestressed concrete piles, with sizes up to 30-inchcs (762-mm) square and design capacities up to 205 tons (1,820 kN). The paper highlights the application of dynamic testing as a routine and essential quality control measure during construction, and presents summaries of the dynamic test data obtained. Issues addressed include increased pile capacity with time after driving, unit friction and end bearing values, hammer efficiency, driving stresses, …

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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 Geological, Rock And Mining Engineering Including Underground Structures And Excavations. Paper No. Gr-Vi, Christopher G. Mueller, M. Kavvadas, Baoshan Huang Mar 1998

Case Histories Of Geological, Rock And Mining Engineering Including Underground Structures And Excavations. Paper No. Gr-Vi, Christopher G. Mueller, M. Kavvadas, Baoshan Huang

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 Geotechnical Earthquake Engineering. Paper No. Gr-Iii, Ahmed-W. Elgamal, Marshall Lew Mar 1998

Case Histories Of Geotechnical Earthquake Engineering. Paper No. Gr-Iii, Ahmed-W. Elgamal, Marshall Lew

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of New Solutions To Traditional Geotechnical Problems. Paper No. Gr-Ix, Vijay K. Puri, Tom Blackburn, John M. Benson Mar 1998

Case Histories Of New Solutions To Traditional Geotechnical Problems. Paper No. Gr-Ix, Vijay K. Puri, Tom Blackburn, John M. Benson

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of Retaining Structures And Deep Excavations. Paper No. Gr-V, Raj V. Siddharthan, Arni E. Rafnsson Mar 1998

Case Histories Of Retaining Structures And Deep Excavations. Paper No. Gr-V, Raj V. Siddharthan, Arni E. Rafnsson

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Case Histories Of Slopes, Dams, And Embankments. Paper No. Gr-Ii, Vlad G. Perlea, Mary P. Perlea, Bujang B. K. Huat Mar 1998

Case Histories Of Slopes, Dams, And Embankments. Paper No. Gr-Ii, Vlad G. Perlea, Mary P. Perlea, Bujang B. K. Huat

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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Geotechnical And Geologic Features Of U.S. 189 In Provo Canyon, Utah, Thomas S. Lee, Steven H. Brandon Mar 1998

Geotechnical And Geologic Features Of U.S. 189 In Provo Canyon, Utah, Thomas S. Lee, Steven H. Brandon

International Conference on Case Histories in Geotechnical Engineering

Provo Canyon, located in north central Utah, is known to have landslide hazards for many years. Construction to widen and straighten a 2.5-mile-long section of U.S. 189 known as the “Narrows” commenced in December 1995. This project consists of twin 300-foot-long two-lane tunnels, 3/4 million cubic yards of soil and rock excavation, 60,000 square feet of cast-in-place concrete soil nailed walls, and 90,790 square feet of mechanically stabilized embankment. During excavation for some of the cuts, landslides occurred that required remediation. Cracks were noticed near the northern portal of the tunnels which necessitated immediate stabilization. Observations during construction are presented. …

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Experiences Of The Support Designs In The Two Large Underground Openings In India, R. K. Goel, J. L. Jethwa, A. K. Dube Mar 1998

Experiences Of The Support Designs In The Two Large Underground Openings In India, R. K. Goel, J. L. Jethwa, A. K. Dube

International Conference on Case Histories in Geotechnical Engineering

Support requirements for two caverns arc worked out by empirical and the numerical approaches. The adequacy of the shotcrete-rock bolt support system is monitored by measuring the deformations of caverns walls and roof. The measurements are compared with the results obtained from the numerical approach. Brief geology, the supports, and the results of performance monitoring are presented in the paper.

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Investigation Of The Influence Of The Clay Seams Around An Underground Excavation In Rock Salt, S. Kwon, John W. Wilson Mar 1998

Investigation Of The Influence Of The Clay Seams Around An Underground Excavation In Rock Salt, S. Kwon, John W. Wilson

International Conference on Case Histories in Geotechnical Engineering

The presence of clay seams in the roof is especially important for assessing the stability of the excavations in salt and potash mines, since they allow separation as well as horizontal slip. The deformational behavior at clay seams in the roof of excavations was investigated by using actual field measurements made at the Waste Isolation Pilot Plant (WlPP) site. From the in situ deformation measurements, the separation and separation rate across the clay seams in the roof and floor could be estimated by using the technique developed in this study. The horizontal displacement along the clay seams was determined from …

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Tension Tests On Drilled Micropiles In A Stiff Clay, Alan J. Lutenegger, Gerald A. Miller Mar 1998

Tension Tests On Drilled Micropiles In A Stiff Clay, Alan J. Lutenegger, Gerald A. Miller

International Conference on Case Histories in Geotechnical Engineering

A series of 20 small diameter drilled and grouted micropiles were installed at three different depths in a stiff surficial clay crust at the National Geotechnical Experimentation Site in Amherst, Massachusetts. A detailed site characterization program was performed to evaluate· the soil characteristics in the crust. Three different sizes of micropiles ranging in diameter from 76 mm to 152 mm and having lengths from 1.52 m to 4.57 m were installed vertically at the site using both continuous flight augers and hand auger techniques. Concrete was placed in the open holes using gravity free-tall. After allowing the concrete to cure …

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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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Geotechnical Risk And Reliability From Theory To Practice, Lenka S. Timiovska Mar 1998

Geotechnical Risk And Reliability From Theory To Practice, Lenka S. Timiovska

International Conference on Case Histories in Geotechnical Engineering

Indeterminate combined with evaluating the safety of existing lifeline systems are, large and here one would expect format risk and reliability techniques to have found their most urgent need. Besides, risk analysis has languished in safety practice, is only now beginning to appear in established safety programs in my country. It is of interest to explore the reasons why this has been so, and to point the way to the adaptations that are necessary if risk analysis is to assume its deserved role in life-line systems and related areas of geotechnical practice. This paper has proposed that geotechnical conditions are …

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Identification Of Potential Seepage Locations Along The Herbert Hoover Dike, Lake Okeechobee Fl., By Electromagnetic Geophysical Method. Prediction And Confirmation., Anthony L. Dipiero, Robert Ross, Samuel R. Honeycutt, Richard D. Lewis Mar 1998

Identification Of Potential Seepage Locations Along The Herbert Hoover Dike, Lake Okeechobee Fl., By Electromagnetic Geophysical Method. Prediction And Confirmation., Anthony L. Dipiero, Robert Ross, Samuel R. Honeycutt, Richard D. Lewis

International Conference on Case Histories in Geotechnical Engineering

This case history demonstrates the use of electromagnetic (EM) induction methods to examine known seepage locations and then predict future ones along the Herbert Hoover Dike (HHD) in south central Florida. The HHD forms an embankment dam 20 to 30 feet high and 140 miles long surrounding Lake Okeechobee. Approximately 26 miles of embankment was surveyed with EM induction. The objective of the EM survey was to identify active and potential foundation seepage locations and conduits. Areas of greater conductivity were often associated with seepage locations observed during a record high water event in October, 1995. These problems included boils …

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Procedure To Predict Settlement Of Solid Waste Landfills Using Power Creep Law, Sanjeev Kumar Mar 1998

Procedure To Predict Settlement Of Solid Waste Landfills Using Power Creep Law, Sanjeev Kumar

International Conference on Case Histories in Geotechnical Engineering

Settlement prediction of solid waste landfills is important for their post-closure operation. Estimation of settlement of refuse is complex because of the mechanism of settlement and heterogeneity of the refuse. Several methods are available to predict the settlement of solid waste landfills. Based on the analysis of published measured data of four landfills, a unique relationship was recently developed between reference compressibility and rate of compression to predict refuse settlement using Power Creep Law. A step-by-step procedure is proposed to predict refuse settlement by using the Power Creep Law at a site for which the data from laboratory or field …

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Toward Earthquake Resilient Cities In The 21st Century: Reduction Of Community Vulnerability, Walter W. Hays Mar 1998

Toward Earthquake Resilient Cities In The 21st Century: Reduction Of Community Vulnerability, Walter W. Hays

International Conference on Case Histories in Geotechnical Engineering

The focus of this paper is on earthquakes and earthquake-resilient communities in the United States. The paper describes what we have learned from the International Decade for Natural Disaster Reduction (IDNDR) and how we can build upon these experiences as we continue working toward the worldwide goal of natural-hazard-resilient cities in the 21st century.

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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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Foundation Damage Of Structures In Kobe And Remediation, Tamotsu Matsui Mar 1998

Foundation Damage Of Structures In Kobe And Remediation, Tamotsu Matsui

International Conference on Case Histories in Geotechnical Engineering

In this paper, foundation damage of structures in the 1995 Hyogoken-Nambu Earthquake was overviewed, mainly focusing on that of bridges and elevated highways, port and harbor facilities and buildings. Then, the remediation methods and works for damaged foundations were summarized, together with illustrating some examples. Finally, essentials of related subjects and suggestions on seismic design and remediation for foundations of structures were summarized for a further study.

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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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Measurement And Analysis Of Civil Engineering Vibrations, Jean-Lou Chameau, Glenn J. Rix, Laurel Empie Mar 1998

Measurement And Analysis Of Civil Engineering Vibrations, Jean-Lou Chameau, Glenn J. Rix, Laurel Empie

International Conference on Case Histories in Geotechnical Engineering

Man-made vibrations caused by construction activities, blasting, rail and vehicular traffic, and machinery can have an adverse impact on buildings and facilities, human occupants of buildings, and sensitive equipment housed within these facilities. Comparisons between vibrations are often difficult because of different methods used to measure, analyze, and interpret vibration data. To facilitate these comparisons, standard methods of selecting and mounting transducers, processing vibration data, and interpreting test results are reviewed. Specific measurement and analysis techniques and maximum allowable vibration criteria used for evaluating the influence of vibrations on humans, the potential for cosmetic damage to structures, and the impact …

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Design And Construction Of The Seattle Symphony's Benaroya Hall Above An Old Railroad Tunnel, Carole L. B. Mitchell Mar 1998

Design And Construction Of The Seattle Symphony's Benaroya Hall Above An Old Railroad Tunnel, Carole L. B. Mitchell

International Conference on Case Histories in Geotechnical Engineering

Benaroya Hall, the new home of the Seattle Symphony, is located directly over an old railroad tunnel in downtown Seattle. The railroad tunnel was hand excavated in the early 1900s; the tunnel excavation caused considerable settlement of the buildings and streets above. The tunneling disturbance and subsequent rotting of timber supports resulted in numerous voids in the vicinity of the tunnel. Excavation for the Benaroya Hall removed up to 55 feet of soil overburden and came to within 12 feet of the tunnel crown. The foundations for the symphony hall were required to protect the railroad tunnel from carrying symphony …

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Failure Of Buildings On Mound ̶ A Case Study, U. N. Sinha Mar 1998

Failure Of Buildings On Mound ̶ A Case Study, U. N. Sinha

International Conference on Case Histories in Geotechnical Engineering

The century old buildings situated on mound at Jais town, Rae Bareli (Uttar Pradesh), India, failed after heavy rainfall. The paper presents the convincing evidence of the failure or buildings through photographs. The prime cause of failures and suggestions are also reported.

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A Follow-Up Of Two Different Foundation Principles, Sven Hansbo, Leif Jendeby Mar 1998

A Follow-Up Of Two Different Foundation Principles, Sven Hansbo, Leif Jendeby

International Conference on Case Histories in Geotechnical Engineering

In a special lecture held by the senior author at the Int. Conf. on Case Histories in Geotechnical Engineering in St. Louis (Hansbo, 1984) a follow-up was presented of the observations on two nearby buildings founded on deep deposits of soft clay according to different foundation principles. In one case the total load of the building is carried by friction piles with a factor of safety against failure equal to 3 while, in the other case, the load is partly carried by contact pressure at the raft/soil interface and partly by friction piles with a design load equal to creep …

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Heavy Crane Foundations On Soft Clay, John R. Davie, Kenneth R. Bell, Mark B. Fitzsimmons, Daniel A. Haggerty Mar 1998

Heavy Crane Foundations On Soft Clay, John R. Davie, Kenneth R. Bell, Mark B. Fitzsimmons, Daniel A. Haggerty

International Conference on Case Histories in Geotechnical Engineering

A very large mobile crane was used to lift a 3,150 kN steam generator through the roof of the containment building of a nuclear power plant. The maximum load on the crane was 19.8 MN, giving a track pressure of almost 600 kPa. Soil conditions were stiff clay underlain by softer clay. This paper describes the bearing capacity and settlement analysis performed to establish a suitable shallow foundation for the crane. The foundation load test confirmed that soil conditions had been adequately defined and that the foundation design was satisfactory.

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Shallow Foundations On A Diagenetic Limestone Formation In Qatar, W. Akili, Robert M. Jackson Mar 1998

Shallow Foundations On A Diagenetic Limestone Formation In Qatar, W. Akili, Robert M. Jackson

International Conference on Case Histories in Geotechnical Engineering

The near surface limestones in Qatar have complex lithologies and have experienced diagenetic changes after deposition. A variety of weak limestones have been encountered in combination with matrix material (rock fragments and secondary fraction). The matrix, often clayey, sometimes cemented with gypsum, anhydrite or calcite grains, is not a rock nor does it qualify as a soil. These materials are: (i) difficult to sample in the undisturbed state. (ii) extremely variable m composition and proprieties, and (iii) appear susceptible to degradation, particularly when wet. This paper presents geotechnical information from selected sites where these materials (diagenetic limestone) have been encountered. …

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