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Full-Text Articles in Engineering

Ground Improvement For Oil Tank Farm In Indonesia, A. F. Abbs, J. M. Cognon, R. W. N. Kelsey May 1984

Ground Improvement For Oil Tank Farm In Indonesia, A. F. Abbs, J. M. Cognon, R. W. N. Kelsey

International Conference on Case Histories in Geotechnical Engineering

This case study describes the use of ground improvement to treat a highly variable site, where new oil storage tanks were constructed. Varied techniques were used comprising a combination of dynamic compaction, preload, vertical drains and replacement. Settlement data from the storage tanks during water test shows the treatment to have been successful.


Ground Movement Characteristics Above Mined Panels In Appalachia-An Empirical Approach, M. Karmis, T. Triplett, P. Schillizzi, G. Hasenfus May 1984

Ground Movement Characteristics Above Mined Panels In Appalachia-An Empirical Approach, M. Karmis, T. Triplett, P. Schillizzi, G. Hasenfus

International Conference on Case Histories in Geotechnical Engineering

The growing recognition of mining subsidence and its effects has provoked numerous investigations into the modeling and prediction of this phenomenon. Through an analysis of case histories and examination of the various modeling techniques, it has become apparent that empirical studies currently represent the most realistic approach to this problem. However, the collection, analysis and interpretation of subsidence and strain data acquired from case studies presents substantial difficulties, due to varying monitoring techniques and methods of analysis. In this paper it is suggested that a prescribed monitoring program could eliminate these problems and ensure quality data by standardizing the measurement …


Highway Interchange Constructed With Slurry Walls, E. Itzig Heine, Frank A. Mcdonough, Surinder Singh May 1984

Highway Interchange Constructed With Slurry Walls, E. Itzig Heine, Frank A. Mcdonough, Surinder Singh

International Conference on Case Histories in Geotechnical Engineering

The use of slurry walls to support 40 feet high embankments and bridge structures at Techwood-Spring Connector, part of Williams Street Interchange in Atlanta, is described. Advantages of using slurry walls in lieu of conventional walls are discussed.


Improvement Of A Dumped Rockfill Foundation By Dynamic Consolidation, Adrian Wightman, Nelson F. Beaton May 1984

Improvement Of A Dumped Rockfill Foundation By Dynamic Consolidation, Adrian Wightman, Nelson F. Beaton

International Conference on Case Histories in Geotechnical Engineering

The paper describes an Industrial Park development, on the British Columbia coast, where Dynamic Consolidation was chosen to densify a loose rockfill prior to construction of a modern high capacity sawmill on shallow foundations. The design and execution of the compaction are described. The in situ tests used to monitor the compaction are described and results presented. It is concluded that the desired result was achieved, and this is supported by a survey of foundation elevations taken four years after construction.


Instrumentation Of A Sewer Tunnel In Weak Singapore Soils, K. W. Lo, G. P. Karunaratne, S. L. Lee May 1984

Instrumentation Of A Sewer Tunnel In Weak Singapore Soils, K. W. Lo, G. P. Karunaratne, S. L. Lee

International Conference on Case Histories in Geotechnical Engineering

The effects of tunnelling in soft ground consisting mainly of Singapore marine clay were recently monitored to establish ground response characteristics. A sewer tunnel of 2.1 m square section was driven at a depth of 6.3 m in this soil by jacking conventional shield and face supports against installed timber lining. Ground response was monitored by an assortment of field instruments read over several weeks' duration. Peck's proposal (1969) of fitting a normal distribution profile to lateral surface settlement field plots when a heading is well past, and the suggestion by Oshikoshi et al 0978) that similar profiles may be …


Mechanism Of Dynamic Consolidation And Its Environmental Effect, Zhong-Qi Wang, Xiang-Iin Deng May 1984

Mechanism Of Dynamic Consolidation And Its Environmental Effect, Zhong-Qi Wang, Xiang-Iin Deng

International Conference on Case Histories in Geotechnical Engineering

This paper is contributed as case histories in ground soil improvement with particular emphasis of dynamic consolidation. The authors try to present as much as they got from the field testings and observations including vibrational parameters, pore pressures, stereoscopic photogrammetry, etc. in order to trace the real behaviour of ground movement during tamping. It is believed that all the data got from the field work are rather informative and illustrative than that from theoretical modelling in the laboratory. Thus, some highlights relating effective thickness of compaction, maximum spacing between compaction points, number of blows for optimum tamping and seismic attenuation …


Performance Of Sand Drains In A Tidal Marsh, R. P. Long, W. H. Hover May 1984

Performance Of Sand Drains In A Tidal Marsh, R. P. Long, W. H. Hover

International Conference on Case Histories in Geotechnical Engineering

This paper presents the field behavior of a jetted sand drain installation at a preloaded wastewater treatment facility site in Gloucester, Massachusetts, U.S.A. The site is underlain by surficial estuary deposits above a stratum of stiff to soft clays. Detailed subsurface explorations and laboratory testing program provided data to predict amounts and rates of primary compression and rates of secondary compression in the referenced strata. The field behavior is compared to predictions through analyzed values of total settlement at the end of primary compression, coefficient of consolidation, and coefficient of secondary compression. A field instrumentation program allowed monitoring of settlements …


Preloading For Large Storage Building, A. C. Stamatopoulos, P. C. Kotzias May 1984

Preloading For Large Storage Building, A. C. Stamatopoulos, P. C. Kotzias

International Conference on Case Histories in Geotechnical Engineering

The properties and method of preloading a 11 m erratic deposit of soft clays and loose sands, are described. Under the preload embankment of 12 m the deposit compressed an average of 7%. Settlement developed rapidly and excess porepressure dissipated within few days, never exceeding 2.1 m of water head. After preload removal borings were performed to compare results with those obtained on the untreated site. This comparison showed that the compressibility and strength of both the clayey and sandy components improved substantially and that the subsurface became more homogeneous. The projected structure built on the improved ground has performed …


Settlements Induced By Soft Ground Tunneling, Miguel P. Romo May 1984

Settlements Induced By Soft Ground Tunneling, Miguel P. Romo

International Conference on Case Histories in Geotechnical Engineering

Ground settlements induced by air-pressure shield tunneling throughout the soft clays of Mexico City have been monitored in five test sections by means of settlement points installed at various depths and distances from the tunnel axis. Subsoil conditions and soil characteristics at each site were thoroughly studied in the field and in the laboratory. Measured settlement profiles have been compared to those computed by a simplified analytical procedure showing very good agreement.


Soil-Cement Backfill For Nuclear Power Plant Foundations, E. Saveri, G. P. Vaccaro, G. Varosio May 1984

Soil-Cement Backfill For Nuclear Power Plant Foundations, E. Saveri, G. P. Vaccaro, G. Varosio

International Conference on Case Histories in Geotechnical Engineering

Soil-cement backfills have been analyzed, designed and tested for the Alto Lazio Nuclear Power Plant in Italy. Extensive analyses were performed to evaluate the stability of and stresses in soil-cement foundation backfills. Soil-structure interaction was also analyzed. The minimum required cement content for foundation and general backfills was established and verified by means of laboratory and field tests. Foundation backfills were designed for two major buildings of the plant.


Subsidence Affects Due To Gypsum Solution In Syracuse, New York, G. W. Lee, S. P. Clemence, S. K. Bhatia, S. Anagnost May 1984

Subsidence Affects Due To Gypsum Solution In Syracuse, New York, G. W. Lee, S. P. Clemence, S. K. Bhatia, S. Anagnost

International Conference on Case Histories in Geotechnical Engineering

Two apartment buildings owned by Syracuse University in the Slocum Heights area underwent extensive differential settlement manifested by foundation cracks. Examination of rock exposures in the nearby area revealed the presence of gypsum beds. Onsite boring and investigation revealed that regrading and installation of french drains and storm sewers influenced the groundwater regime resulting in solutioning of the gypsum and subsequent collapse of underground cavities. Remedial measures included alteration of drainage system and underpinning of apartment structures.


The Brenda Mines' Cycloned- Sand Tailings Dam, Earle J. Klohn May 1984

The Brenda Mines' Cycloned- Sand Tailings Dam, Earle J. Klohn

International Conference on Case Histories in Geotechnical Engineering

For the benefit of those readers not fully conversant with mine tailings and the methods commonly used to store them, the paper presents a brief overview covering the composition of tailings and the procedures commonly used to design and construct the required tailings dams. The remainder of the paper presents a detailed description of the design, construction, and performance of the Brenda Cycloned-Sand Tailings Dam. This includes a summary and assessment of the large volume of data available from extensive field, laboratory, and office studies that have been ongoing since the start of construction in 1968. The most recent of …


Upgrading Existing Footings With Micro-Piles, Surinder Singh, E. Itzig Heine May 1984

Upgrading Existing Footings With Micro-Piles, Surinder Singh, E. Itzig Heine

International Conference on Case Histories in Geotechnical Engineering

The use of pressure-injected micro-piles to upgrade the load carrying capacity of existing spread footings and to limit settlement is described. Theoretical pile load capacity and predicted settlement have been verified by a full-scale pile load test.


Conference Participants, Multiple Participants May 1984

Conference Participants, Multiple Participants

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Concluding Session, Multiple Authors May 1984

Concluding Session, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.