Case History — Performance Monitoring Success,
2013
GEI Consultants, Inc., Woburn, MA
Case History — Performance Monitoring Success, Charles B. Grant, Tom Hurley
International Conference on Case Histories in Geotechnical Engineering
The City Creek Center urban redevelopment project in Salt Lake City, Utah involved excavations up to 65 feet deep. Shoring systems included more than 29,000 square feet of anchored diaphragm walls, 100,000 square feet of soil nail walls, and 860 linear feet of underpinning. Detailed performance monitoring alerted the project team to unacceptable performance of an anchored diaphragm wall adjacent to an occupied twenty-five-story building on shallow foundations. This knowledge allowed the team to react quickly, stabilize the excavation, investigate the situation, and develop successful remedial measures. The diaphragm wall was reinforced with additional anchors and subgrade concrete struts, allowing …
Case Studies Used In Instruction To Achieve Specific Learning Outcomes: The Case Of The Embankments Constructed For The Approach To Limerick Tunnel, Ireland,
2013
Trinity College, Dublin, Ireland
Case Studies Used In Instruction To Achieve Specific Learning Outcomes: The Case Of The Embankments Constructed For The Approach To Limerick Tunnel, Ireland, Trevor L. L. Orr, Marina Pantazidou
International Conference on Case Histories in Geotechnical Engineering
This paper gives an example of a case study written for instructional purposes, in order to support the achievement of specific learning outcomes which include (i) identifying modes of failure and (ii) selecting appropriate soil parameter types and values. Case writing was based primarily on information from a detailed publicly available article, supplemented with additional input from one author of this article. The case narrative is accompanied by annotated calculations, which follow the general design philosophy of the project. The case focuses on two of the main issues for the geotechnical design of the highway embankments close to the Limerick …
Case Studies — Pavement Of The Educator's Road,
2013
Széchenyi István University, Györ, Hungary
Case Studies — Pavement Of The Educator's Road, Richard Ray, Peter Scharle, Robert Szepesházi
International Conference on Case Histories in Geotechnical Engineering
One of the lessons of educational strategies in geo-engineering is to inspire the students’ motivation by telling them how the geoengineer thinks and why is it worth attaining. The Geotechnical Triangle developed by Burland proved to be a useful conveyance to deliver essentials of the geo-engineers’ habit of mind. Slight extension of this simplex to a tetrahedron brings into the framework the construction technology, equivalent of importance with ground profile, observed behavior and appropriate model. Case histories retain their central role within this 3D simplex. In this perspective geo-engineering proves to be analogous with medicine where concepts such as symptom, …
Design Of Shallow Foundations For A Large Polysilicon Plant In China,
2013
Group Delta Consultants, Inc., Irvine, CA
Design Of Shallow Foundations For A Large Polysilicon Plant In China, Kul Bhushan, Ken Choudhary
International Conference on Case Histories in Geotechnical Engineering
This paper presents the development of a shallow foundation system consisting of mat foundations for support of all structures including heavily loaded, settlement sensitive structures at a recently completed Polysilicon Plant in China. The site grading for the 700 by 700 m (2297 by 2297 ft) site included up to 15 m (49.2 ft) of fills and 18 m (59.1 ft) of cuts. The soil conditions consisted of native residual stiff clays overlying siltstone/mudstone and conglomerate bedrock. Soft soils were present in the canyon bottoms and at the contact between stiff soils and bedrock. Settlements of native soils and bedrock …
Effect Of Neighboring Footings On Single Footing Settlement,
2013
University of Tanta, Egypt
Effect Of Neighboring Footings On Single Footing Settlement, Marawan Shahein, Ali Hefdhallah
International Conference on Case Histories in Geotechnical Engineering
The most economic type of foundations is shallow isolated footings. It is common practice to estimate settlement of shallow isolated footings without consideration of the influence of neighboring footings or loaded areas. In fact there is few, if any, available method to estimate settlement of isolated footings taking into consideration such an effect of neighboring loaded areas. Such an effect might be vital in a lot of cases. This paper presents a case history that shows the importance of such an effect. The case history in hand consists of 28 auxiliary buildings of an Electrical Power plant near Cairo, Egypt. …
Enhancement Of Engineering Education In The Arab Gulf States Through Cooperative Learning Protocols,
2013
Geotechnical Engineering, Ames, IA
Enhancement Of Engineering Education In The Arab Gulf States Through Cooperative Learning Protocols, Waddah Akili
International Conference on Case Histories in Geotechnical Engineering
Engineering education in the Arab Gulf States (the Region) faces significant challenges as it seeks to meet the demands on the engineering profession in the twenty first century. This paper focuses on classroom-based pedagogies of engagement, and cooperative learning strategies in particular. The paper is a follow up to previous work by the author, on viable strategies to improve the classroom environment of engineering colleges in the Region. At the start, the paper provides an overview of relevant benchmarks of engineering education in the Region. Then, relates author’s preliminary findings on teaching/learning practices in Region’s colleges, sheds light on the …
Foundation Design And Settlement Measurement Of Cctv New Headquarter,
2013
East China Architectural Design & Research Institute Co. Ltd., Shanghai, China
Foundation Design And Settlement Measurement Of Cctv New Headquarter, Wang Wei-Dong, Wu Jiang-Bin, Weng Qi-Ping
International Conference on Case Histories in Geotechnical Engineering
The China Central Television (CCTV) New Headquarter is situated in Chaoyang District of Beijing. It consists of two main towers and podiums. The bored piles with diameter of 1200mm and single pile bearing capacity of 11000kN were chosen for the towers. Through the combination of pile-end and shaft grouting, as well as in-situ bearing capacity tests of piles with different pile length, the pile length, the costs and construction difficulties were reduced considerably. Based on the concept of interactions among the superstructure, the foundation raft, the piles and soils, calculations and analysis were carried out on the design of the …
Geosynthetic Reinforced Segmental Retaining Wall Failure: Forensic Investigation And Remediation,
2013
University of North Carolina at Charlotte, Charlotte, NC
Geosynthetic Reinforced Segmental Retaining Wall Failure: Forensic Investigation And Remediation, Rajaram Janardhanam, Migue A. Pando
International Conference on Case Histories in Geotechnical Engineering
At UNC Charlotte, the authors have used a retaining wall failure case history to cover the different modes of failure of retaining wall and to highlight the importance of global stability failure. Specifically, this case study has been used by the authors in undergraduate and graduate courses of geotechnical engineering to highlight the importance to include in the design process the assessment of global stability. The project is valuable to students due to wealth of data including field and laboratory site investigation, monitoring data from slope inclinometers, amongst other data. The students are presented with the initial design information including …
Geotechnical Challenges In Highway Engineering In Twenty First Century: Lessons From The Past Experiences And New Technologies,
2013
Wayne State University, Detroit, MI/ Haengel & Associates Engineering, Canton, MI
Geotechnical Challenges In Highway Engineering In Twenty First Century: Lessons From The Past Experiences And New Technologies, Abdul Aziz Khandker, Jeffrey T. Anagnostou, Purushottam Deo
International Conference on Case Histories in Geotechnical Engineering
The Transportation Authorities and Highway Engineers around the world are facing different types of challenges today than their counterparts in the nineteenth and twentieth centuries. These challenges include developing new highways and bridges as well as retrofitting of existing roads and bridges deteriorated due to aging or increased vehicle loading. Frequencies of deterioration of existing roads and imminent bridge failures forced many Highway Authorities to evaluate the existing roads and bridges and prioritize their retrofitting to comply with current specifications and future conditions. The new challenges of today include, but not limited to: a) Construction over poor foundation materials such …
Geotechnical Failures Caused By Human Errors,
2013
West Pomeranian Technical University, Szczecin, Poland
Geotechnical Failures Caused By Human Errors, Marek Tarnawski
International Conference on Case Histories in Geotechnical Engineering
The West Pomeranian Technical University holds conferences on building failures. It usually takes place every other year and it is well known and respected in Poland. The jubilee, 25th conference took place in 2011. With intent to honor it the author prepared a monograph entitled “Geotechnical reasons of building failures”. It was based, almost solely, on the contents of 225 case studies presented in the former conference proceedings. As with every conference based so much on case histories it presents in its papers a mosaic of various cases. Although each describes and explains the reality in its own way, systematic …
Geotechnical Investigation At Barrage For Foundation Design At Nyamjang Chhu Hydro Power Project, Tawang, Arunachal Pradesh, India — A Case Study,
2013
Indo Canadian Consultancy Services, India
Geotechnical Investigation At Barrage For Foundation Design At Nyamjang Chhu Hydro Power Project, Tawang, Arunachal Pradesh, India — A Case Study, Ram Bachan Shivali, Rakesh Mahajan
International Conference on Case Histories in Geotechnical Engineering
The Nyamjang Chhu Hydro Electric Project (780 MW) located in District Tawang, Arunachal Pradesh, India, proposes construction of a barrage across Nyamjang Chhu River for diversion of water for power generation. The diversion barrage comprises of gated spillway and sluiceway, head regulator, surface desanders and a collection pool cum tunnel intake. Geotechnical investigations for assessment of subsoil strata at barrage location and its evaluation for foundation design included drilling of 13 no boreholes totaling 551m. In-Situ permeability and standard penetration tests (SPT) were conducted in the boreholes along with Dynamic Core Penetration Test (DCPT) conducted adjacent to boreholes. Disturbed and …
On Becoming A 21st Century Engineering Educator: Building Competencies And Acquiring Needed Skills,
2013
Geotechnical Engineering, Ames, IA
On Becoming A 21st Century Engineering Educator: Building Competencies And Acquiring Needed Skills, Waddah Akili
International Conference on Case Histories in Geotechnical Engineering
The paper explores ways to effective professional development of junior engineering educators, to enable them to assume the roles they are entrusted with. The purpose here is to offer a new way to think about the development of the professional engineering educator. The paper focuses on:(i) the cognitive processes that faculty would tend to follow as they learn more about teaching, (ii) the discipline-based industrial/practical experience they need to acquire to add to their repertoire as “practitioners”, and (iii) the institutional initiatives, including: administrative support, and resources. What is needed is a change in culture within the institution, i.e., the …
Performance Monitoring Of A Bridge Abutment Spread Footing From Construction Through Service,
2013
Minnesota Department of Transportation, Maplewood, MN
Performance Monitoring Of A Bridge Abutment Spread Footing From Construction Through Service, Derrick Dasenbrock, Aaron Budge, Bryan Field, Daniel Mattison
International Conference on Case Histories in Geotechnical Engineering
The use of spread footings over compressible soils is becoming more common for Minnesota Department of Transportation bridges as technologies improve to better predict, mitigate, and evaluate settlement. In August of 2011 the north abutment of a new bridge crossing I-494 was constructed over compressible soils following a soil fill preload, designed to reduce the foundation settlement from several inches to less than one inch, to meet project requirements. Spread footing foundations are seldom outfitted with instrumentation; adequate performance is frequently assumed based on the decision to use shallow foundations. Here, a monitoring plan was developed to validate the preloading …
Performance Of Digboi Refinery Modernization Project From Geotechnical Aspects — Investigation And Observations,
2013
CSIR-North East Institute of Science & Technology, India
Performance Of Digboi Refinery Modernization Project From Geotechnical Aspects — Investigation And Observations, Gokul K. Bayan
International Conference on Case Histories in Geotechnical Engineering
Digboi Refinery is the world’s oldest refinery in simple form which is producing oil since 1889 till present with its modernized setup. Its first well was dug manually during 1889 and crude oil was found at 54m depth only. This phenomenon has encouraged establishing an industry on oil producing business, and accordingly a form of first refinery was comeout in 1889. The Digboi Refinery modernization project was taken up in large scale in order to overcome the technological obsolescence of the old refinery. Subsequently a number of other major projects were undertaken by Assam Oil Division to further revamp and …
Planning And Implementation Of A Mega Geotechnical Engineering Project In Singapore,
2013
DST Consulting Engineers, Canada
Planning And Implementation Of A Mega Geotechnical Engineering Project In Singapore, Myint Win Bo, A. Arulrajan
International Conference on Case Histories in Geotechnical Engineering
Implementation of mega geotechnical engineering projects requires a systematic approach and detailed planning. A mega land reclamation and ground improvement project which consists of various components of geotechnical engineering applications was planned and implemented in the Republic of Singapore from 1990 till 2005, a total period of one and a half decades. Due to the extensive ground improvement required to treat the underlying highly compressible soil, with the presence of highly variable ground profile and ground conditions due to the natural geological process, a detailed ground investigation was necessary. This was furthermore necessary due to the importance of various critical …
Recorded Bedrock Motions And Site Effects Evaluation In Tehran City,
2013
University of Colorado, Boulder, CO
Recorded Bedrock Motions And Site Effects Evaluation In Tehran City, Reza Behrou, Ali Komak Panah, Mohammad Reza Ghayamghamian
International Conference on Case Histories in Geotechnical Engineering
In this paper, the results of theoretical analyses related to the evaluation of site effects in Tehran city, the capital of Iran, are presented. To evaluate the response of site, recorded bedrock motions in BHRC (Building and Housing Research Center) acceleration stations at Tehran city were used as bedrock input motion. These motions were recorded during Firozabad-Kojour (2004) earthquake (Ms=6.4), which occurred near Tehran city. Equivalent linear analysis was performed to evaluate the seismic response of each selected geotechnical and geophysical profile subjected to the scaled 475-year bedrock input motion. The results are presented in terms of site response spectrum …
Site Response Analysis In The Stm-M6 Industrial Area Of The City Of Catania (Italy),
2013
CNR Ibam, Catania, Italy
Site Response Analysis In The Stm-M6 Industrial Area Of The City Of Catania (Italy), Antonio Cavallaro, Antonio Ferraro, Salvatore Grasso, Michele Maugeri
International Conference on Case Histories in Geotechnical Engineering
The paper presents the case history of the geotechnical characterization of a seismic site for the re-use of an industrial building for producing solar panels in the industrial area of Catania (Sicily, Italy). To determine the geological profile and the geotechnical characteristics of the soil, the site was well investigated by means of in situ and laboratory tests. The following in situ geotechnical tests were carried out: Borings, SPT, CPT, PLT and dynamic in situ tests. Among them Down-Hole (D-H), Cross-Hole (C-H), SASW and recently Seismic Dilatometer Marchetti Tests (SDMT) have been carried out, with the aim to evaluate the …
Students As Forensic Engineers: An Innovative Approach To Teaching Soil Mechanics,
2013
Polytechnique Montréal, Canada
Students As Forensic Engineers: An Innovative Approach To Teaching Soil Mechanics, Benoît Courcelles, Lina Forest, Anastassis Kozanitis
International Conference on Case Histories in Geotechnical Engineering
Civil engineers are everyday faced with multidisciplinary problems. Their tasks are not only related to technical aspects, but also involve ethical and environmental issues, economic considerations and, nowadays, international collaborations. This broad spectrum of aspects requires a strong technical knowledge, as well as many interpersonal skills and an interest in societal related issues. When traditional courses are simply adapted to the development of technical competences, introducing students to non-technical (although civil engineering-related) aspects remains a challenge. To remediate to this difficulty, an innovative approach was implemented in the undergraduate course of Soil Mechanics at Polytechnique Montreal. The originality of our …
Supporting Tunnelling Excavation Of An Unstable Slope By Long Term Displacement Monitoring,
2013
Università di Roma “Sapienza", Italy
Supporting Tunnelling Excavation Of An Unstable Slope By Long Term Displacement Monitoring, Francesca Bozzano, Paolo Mazzanti, Alberto Prestininzi
International Conference on Case Histories in Geotechnical Engineering
A complex multi-sensor monitoring platform for the continuous control of an unstable slope affected by tunneling excavation, was realized between 2007 and 2008 after the first collapse of an already built tunnel entrance. The monitoring system was made of some inclinometric and piezometric sensors up to 70 m deep, a topographic system, a Terrestrial SAR Interferometer, a weather station, a photocamera and some load cells installed on bulkheads anchors. The continuous monitoring of the slope during different working phases (planning of stabilization works, realization of stabilizations works and tunneling excavation) allowed us to continuously control the slope behaviour, thus guaranteeing …
The Initiative Of The Hellenic Society For Soil Mechanics And Geotechnical Engineering To Support The Development Of Case Studies Suitable For Instruction & A Slope Stability Example,
2013
Public Power Corporation, Greece
The Initiative Of The Hellenic Society For Soil Mechanics And Geotechnical Engineering To Support The Development Of Case Studies Suitable For Instruction & A Slope Stability Example, George Belokas, George Dounias, Marina Pantazidou, Christos Tsatsanifos
International Conference on Case Histories in Geotechnical Engineering
The ultimate goal of this article is to promote the collection of case studies suitable for geotechnical instruction by (a) proposing a way of supporting development of such cases through incentives and (b) providing an example of a suitable case study and the necessary accompanying material. The support structure proposed is the initiative of the Hellenic Society for Soil Mechanics and Geotechnical Engineering (HSSMGE) to establish a competition for case studies appropriate for geotechnical instruction and award a prize at its Geotechnical Conference. The paper includes the evaluation criteria and case study specifications of the competition, which highlight the characteristics …
