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Tied-Back Wall Failure, Boston, Ma, Theodore Von Rosenvinge Iv Apr 2013

Tied-Back Wall Failure, Boston, Ma, Theodore Von Rosenvinge Iv

International Conference on Case Histories in Geotechnical Engineering

Excavation for Boston’s Central Artery project included one of the most interesting temporary excavation support system failures in recent history (1993). The wall moved much more than predicted at a depth of 41 feet, approximately 2/3 of the final 60 foot excavation depth. Jet grouting was used to stabilize the bottom of the excavation before proceeding to the full depth. The excavation support system provided space for a cut and cover section of Interstate I-90’s Third Harbor Tunnel approach to Logan Airport. The permanent structure is a concrete box section of the tunnel. The excavation system consisted of a tied-back …

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Phytoforensics: Soil And Groundwater Sampling Without Soil Or Groundwater!, Joel G. Burken, Kendra M. Waltermire Apr 2013

Phytoforensics: Soil And Groundwater Sampling Without Soil Or Groundwater!, Joel G. Burken, Kendra M. Waltermire

International Conference on Case Histories in Geotechnical Engineering

Plants directly interact with surrounding water, air, and soil, collecting and storing chemicals and elements from the surrounding environment. Tree coring methods have shown that groundwater contamination can be assessed without directly sampling the groundwater. In this work, two new and innovative sampling methods that place sampling devices inside the plant, i.e. “in-planta”, were developed to access this valuable data that can direct and perhaps replace traditional methods for contaminated-site investigations. Traditional site assessments may be limited due to time, site access, and expense, resulting in incomplete understanding of the contaminated plumes and inefficient remedial approaches. The new techniques presented …

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Cowboys Stadium Roof Arch Foundations — Revisited, Garry H. Gregory Apr 2013

Cowboys Stadium Roof Arch Foundations — Revisited, Garry H. Gregory

International Conference on Case Histories in Geotechnical Engineering

One of the challenging engineering aspects of the new Cowboys Stadium in Arlington, Texas was design of foundations for the retractable roof arches. The two arches, with a clear span of approximately 1,290 ft, produce a lateral thrust of approximately 19,500 kips at each foundation. The Author was on a consultancy board related to foundation design with Mr. Clyde Baker during the design phase of the project. Design criteria included a maximum allowable deflection of approximately 0.5 inches for the foundations. Adding to the complexity was the varying geologic conditions at each arch foundation location. After eliminating numerous options, the …

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Structural Damage Of A 5-Storey Building: Differential Settlement Due To Construction Of An Adjacent Building Or Because Of Construction Defects?, Ioannis Anastasopoulos Apr 2013

Structural Damage Of A 5-Storey Building: Differential Settlement Due To Construction Of An Adjacent Building Or Because Of Construction Defects?, Ioannis Anastasopoulos

International Conference on Case Histories in Geotechnical Engineering

The paper presents a case history of a 5-storey RC building in Athens (Greece), seriously damaged due to differential settlement. Built in 1968, the damaged structure is founded on spread footings, lying on very soft clayey soil. For more than 30 years, no damage had been observed. In 1999, construction of an adjacent 5-storey RC building begun, and shear cracks started appearing. Inclined at 45o, the cracks implied damage due to differential settlement. The owners of the damaged building filed a law suit, claiming that the damage was due to additional loading by the under-construction adjacent building. Measurements conducted in …

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Natural Hazard Preparedness And Mitigation In India, T. N. Gupta Apr 2013

Natural Hazard Preparedness And Mitigation In India, T. N. Gupta

International Conference on Case Histories in Geotechnical Engineering

Indian sub-continent is highly vulnerable to geological and hydro-meteorological hazards. Occurrences of hazard events like earthquakes, cyclones, floods, landslides have, more than often turned into disasters of varying severity with devastating impact on development process destroying human lives, property, livelihoods and social fabric. Efficient management of disasters, rather than mere response to their occurrence, has in recent decades, received an increasing attention of the national planners leading to the formulation of Disaster Management Act in 2005 by Government of India. The national policy enshrined in the Act marked a paradigm shift from the erstwhile post-disaster relief-centric approach to pro-active approach …

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Luncheon To Honor Dr. Shamsher Prakash, Multiple Participants Apr 2013

Luncheon To Honor Dr. Shamsher Prakash, Multiple Participants

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

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A Comprehensive Model For Anaerobic Degradation In Bio-Reactor Landfills, Jay N. Meegoda, S. Bhuvaneshwari, P. A. Hettiaratchi, H. Hettiarachchi Apr 2013

A Comprehensive Model For Anaerobic Degradation In Bio-Reactor Landfills, Jay N. Meegoda, S. Bhuvaneshwari, P. A. Hettiaratchi, H. Hettiarachchi

International Conference on Case Histories in Geotechnical Engineering

A new generation of sustainable landfill was designed and constructed in the City of Calgary, Canada to achieve sustainable municipal solid waste (MSW) management. This sustainable landfill called “biocell” involves sequential operation of a landfill cell to produce methane gas during the first stage of anaerobic degradation and in-situ composting within the cell footprint. Once methane recovery is minimal, the second stage aerobic degradation initiated by injecting air through methane recovery system and finally landfill is mined for resource and space recovery in the third stage. The resources that can be recovered include compost like material and recyclables such as …

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A Laboratory Study Of Strong And Weak Sandstones, Arup Bandyopadhyay, Hasan Abdullah Apr 2013

A Laboratory Study Of Strong And Weak Sandstones, Arup Bandyopadhyay, Hasan Abdullah

International Conference on Case Histories in Geotechnical Engineering

The laboratory evaluation of four sandstones from three projects, Shwezaye H.E. Project, Myanmar, Ujh H.E. Project, J&K, India (two variants) and Ken- Betwa Link Project, M.P., India, is presented here. The study leads to three broad inferences: one, there could be very large variation between two sandstones; e.g., here, sandstone from Ken-Betwa, vis-à-vis other three (comparatively poor) sandstones, is superior in all respects (except grain density). Two, the three poor sandstones differ in respect of some – not all – properties and parameters. Three, none of the three poor sandstones is better than the other two in respect of all …

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Caverns In The Ground Under Thermal Power Plant, Caused By Static Electricity And Chemically Aggressive Water, Chavdar Vassilev Kolev, Gergana Vassileva Gevezova Apr 2013

Caverns In The Ground Under Thermal Power Plant, Caused By Static Electricity And Chemically Aggressive Water, Chavdar Vassilev Kolev, Gergana Vassileva Gevezova

International Conference on Case Histories in Geotechnical Engineering

A relatively rare phenomenon is discussed in the bellow report. Some deformations and subsidences of the road pavement and of some facilities of the plant for chemically contaminated water in Sofia Thermal Power Plant are examined here. A danger of demolishing of large ponds of sediment water, as well as of incidences with the high steel poles for high voltage were highly possible to happen if current situation is retained. Various studies with this topic have been conducted - geophysical, such as geo-radar, electro-tomographical and drilling ones (with short boreholes). Laboratory and field studies of the ground have been also …

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Correlation Between VS And Rqd For Different Rock Types, Emre Biringen, John Davie Apr 2013

Correlation Between VS And Rqd For Different Rock Types, Emre Biringen, John Davie

International Conference on Case Histories in Geotechnical Engineering

Although there is no direct relationship between the shear wave velocity (VS) of in-situ rock and Rock Quality Designation (RQD), it is apparent that some relationship exists since both VS and RQD decrease in fractured and weathered rock. However, unweathered or unfractured soft rock will have comparatively low VS compared with unweathered or unfractured hard rock since VS is a function of rock hardness and density. Thus, any relationship between VS and RQD will be specific to a particular rock type, and, in many cases, to a particular area/region where the hardness and density …

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Dynamic Compaction In Loose Granular Deposits; A Comparison Between Results From Conventional And Recent Improvement Methods, Apostolos V. Kozompolis, Panos Vettas, George Chlimintzas Apr 2013

Dynamic Compaction In Loose Granular Deposits; A Comparison Between Results From Conventional And Recent Improvement Methods, Apostolos V. Kozompolis, Panos Vettas, George Chlimintzas

International Conference on Case Histories in Geotechnical Engineering

This study presents the results of dynamic compaction in loose, saturated granular deposits. The dynamic compaction operations were conducted by (a) the conventional method of Falling Weight Treatment (a.k.a. Deep Dynamic Compaction - DDC) and (b) the more recent Rapid Impact Compaction (RIC) method. The results of either soil improvement method are being presented, normalized and compared side by side in regards to the resulting soil improvement characteristics as well as the degree of efficiency with varying depth and location. Last, but not least, the improved mean soil compressibility parameters are validated through an embankment surcharge test.

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Dynamic Properties Of Municipal Solid Waste In A Bioreactor Cell At Orchard Hills Landfill, Illinois, Usa, Philip J. Carpenter, Krishna R. Reddy, Michael D. Thompson Apr 2013

Dynamic Properties Of Municipal Solid Waste In A Bioreactor Cell At Orchard Hills Landfill, Illinois, Usa, Philip J. Carpenter, Krishna R. Reddy, Michael D. Thompson

International Conference on Case Histories in Geotechnical Engineering

Bioreactor landfills enhance municipal solid waste (MSW) degradation through recirculation of leachate inside the waste mass. In-situ monitoring of moisture distribution and changes in mechanical properties (stiffness) of MSW is needed to optimize the safe and effective operation of bioreactor landfills. Geophysical methods, such as electrical resistivity tomography, are shown to have great potential to monitor the moisture distribution. This study is aimed at investigating seismic surveys to characterize changes in dynamic properties (e.g., shear wave velocity and Poisson’s ratio) of MSW to infer the extent of degradation and provide the input needed for seismic stability evaluation. To achieve this …

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Dynamic Properties Of Stabilized Subgrade Clay Soil, Argaw Asha Ashango, Nihar Ranjan Patra Apr 2013

Dynamic Properties Of Stabilized Subgrade Clay Soil, Argaw Asha Ashango, Nihar Ranjan Patra

International Conference on Case Histories in Geotechnical Engineering

Expansive soils are fine-grained soils that can undergo a significant volume change due to the variation of water content. A change in the water content of weak subgrade material under the roadway is a cause for the damage of the road pavement. During an earthquake, the soft clay will lose the small shear strength it possesses which causes cracks and movements of the road. In the present study, soil samples were collected from Banda, Uttar Pradesh, India. The study area is at risk for seismic damage due to Himalayan frontal fault earthquakes. The soils samples are highly expansive in nature …

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Ground Improvement And Settlement Monitoring Program For A Power Plant Project, John J. W. Lee, Ravee Raveendra, Curt Basnett, Yoga Chandran, Robert Howard, Roy Snover Apr 2013

Ground Improvement And Settlement Monitoring Program For A Power Plant Project, John J. W. Lee, Ravee Raveendra, Curt Basnett, Yoga Chandran, Robert Howard, Roy Snover

International Conference on Case Histories in Geotechnical Engineering

CH2M HILL is providing engineering, procurement, and construction services for a power plant project in Utah. Before beginning construction on the power plant, geotechnical studies were performed to characterize the subsurface conditions for the anticipated settlement and to determine a ground improvement method to accelerate the construction period. Ground improvement with wick drains and surcharge fill placement was carried out to improve the soft soil conditions at the project site. Settlement monitoring instrumentations were installed before placing structural fill and surcharge fill. An extensive settlement monitoring program was also implemented inside and around the perimeter of the project site to …

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Ground Improvement For Redevelopment Of Former Landfill, Larry P. Jedele, Brandon Buschmeier Apr 2013

Ground Improvement For Redevelopment Of Former Landfill, Larry P. Jedele, Brandon Buschmeier

International Conference on Case Histories in Geotechnical Engineering

A former industrial landfill site was selected for the design and construction of a large industrial building. Due to the soil and groundwater conditions along with potential environmental impacts discussed in this paper, support of the building using shallow spread foundations or conventional deep foundations, such as driven or cast-in-place piles or drilled piers were not considered to be reasonable foundation support alternatives. Therefore, ground improvement was deemed the best alternative to support the building, floor slabs and machine foundations for the project, although timber piles with a structural slab were also considered. Controlled modulus columns and rammed aggregate piers …

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Impacts Of Drain Water On Soils And Crops And It Causes: A Case Study Of Kamber Taluka, Pakistan, Noor Hussain Apr 2013

Impacts Of Drain Water On Soils And Crops And It Causes: A Case Study Of Kamber Taluka, Pakistan, Noor Hussain

International Conference on Case Histories in Geotechnical Engineering

Taluka Kamber has been the receiving of natural calamities turned disasters due to its geographical location. The area is in constant threat of the surface drainage effluent coming from Balochistan Plateaus and Local drains. The toxic and highly contaminated water from different drains has devastating and impact on the natural lakes and agricultural lands of the region. The natural flow routes of the flood water have been interrupted at many places which have increased the impact and frequency of the floods in the area. The investigated area is very famous for the paddy and wheat production in the country, but …

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Innovative Ground Improvement For Liquefaction Control Near Charleston, South Carolina, Brian Metcalfe, Kord Wissmann, Kenneth Zur Apr 2013

Innovative Ground Improvement For Liquefaction Control Near Charleston, South Carolina, Brian Metcalfe, Kord Wissmann, Kenneth Zur

International Conference on Case Histories in Geotechnical Engineering

Liquefaction remediation solutions often encompass high prevailing costs particularly in heterogeneous soil profiles. Common liquefaction control measures consist of deep foundations, soil mixing, and stone columns. Rammed Aggregate Pier methods have been used in the past two decades to support structures in cohesive and cohesionless soil profiles and control foundation settlements to building tolerances. These methods have recently been adapted to treat liquefiable soil profiles by improving the soil through densification, drainage, and shear stress redistribution. This paper focuses on a case history on Daniel Island, SC where a new variation of RAP methods, called the Rammed Compaction Point™ (RCP) …

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Investigation On Geosynthetic Reinforced Two Layered Soil System, P. B. Ullagaddi, T. K. Nagaraj Apr 2013

Investigation On Geosynthetic Reinforced Two Layered Soil System, P. B. Ullagaddi, T. K. Nagaraj

International Conference on Case Histories in Geotechnical Engineering

Use of geosynthetics for flexible pavements founded on expansive soil subgrade is one of feasible and economic solution to minimize the undulation and required pavement thickness. In this present investigation the effect of inclusion of the geosynthetic reinforcement on California Bearing Ratio (CBR) value of a two layered soil system with black cotton soil at bottom and granular soil at top as a buffer layer, with different thickness configuration and geotextiles of different physical and mechanical properties was studied by laboratory and field California bearing ratio tests. Thickness of flexible pavement over the two layer soil system of different thickness …

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Offshore Stone Columns Under Embankment With Embedded Pipes, Mohab Sabry, Mohamed A. Mostafa Apr 2013

Offshore Stone Columns Under Embankment With Embedded Pipes, Mohab Sabry, Mohamed A. Mostafa

International Conference on Case Histories in Geotechnical Engineering

A breakwater embankment was constructed as part of a settling basin for the intake of a thermal power plant in the north of Egypt. The 440-m long breakwater surrounds the intake basin which has an area of about 18000 m2. Sea water is supplied to the intake basin through 50 concrete pipes embedded in the breakwater. Subsurface soil conditions in the area indicated that the embankment would be founded on soft silty clay underlain by a layer of silty sand. Results from the settlement analysis showed that the embedded pipes could not tolerate the predicted differential settlement in …

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Seismic Bearing Capacity Of Strip Footing Resting On Reinforced Earth Bed, Apoorva Agarwal, Swami Saran, S. Mukerjee Apr 2013

Seismic Bearing Capacity Of Strip Footing Resting On Reinforced Earth Bed, Apoorva Agarwal, Swami Saran, S. Mukerjee

International Conference on Case Histories in Geotechnical Engineering

With an increase in demand for construction the use of poor soils becomes imperative. Soil bearing capacity and settlement play an important role in the design of foundations. Seismicity of the site is another important parameter in the design of the foundation for a structure. Hence seismic bearing capacity of soil becomes an important component in the design. In weak soils often deep foundations are recommended on account of the low soil bearing capacity available. In poor soils, ground improvement techniques are commonly used to improve the soil bearing capacity. Reinforcing earth with geo synthetic is one such technique adopted …

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Settlement Of Large Embankment Construction Adjacent To A Buried Gas Pipeline — A Case History In Settlement Mitigation Using Lightweight Fill, Bret N. Lingwall, Scott Anderson Apr 2013

Settlement Of Large Embankment Construction Adjacent To A Buried Gas Pipeline — A Case History In Settlement Mitigation Using Lightweight Fill, Bret N. Lingwall, Scott Anderson

International Conference on Case Histories in Geotechnical Engineering

As part of the $1.7 Billion I-15 CORE highway reconstruction project in Utah, several new or enlarged large embankments were constructed adjacent to existing buried utilities. Lightweight fill was selected as the technology to limit distress to the adjacent utilities. In order to estimate the impact from new construction to the utilities, settlement estimates for the lightweight embankment were performed using traditional settlement estimating techniques. Numerical models using FLAC3D were then performed to refined estimates. Estimates of lightweight embankment foundation settlements from this construction were obtained from the finite difference modeling. Three-dimensional numerical modeling was used in order to evaluate …

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Soil Liquefaction Analysis Based On Geotechnical Exploration And In Situ Test Data In The Tabriz Metro Line 2, Mikail Yousefzadeh Fard, Mahyar Babazadeh, Pouya Yousefzadeh Apr 2013

Soil Liquefaction Analysis Based On Geotechnical Exploration And In Situ Test Data In The Tabriz Metro Line 2, Mikail Yousefzadeh Fard, Mahyar Babazadeh, Pouya Yousefzadeh

International Conference on Case Histories in Geotechnical Engineering

Liquefaction is one of the most important and complex topics in geotechnical earthquake engineering. During this phenomenon, pore water pressure increases as long as it will be equal to confining stresses. Hence, the effective confining stress becomes zero and the soil will not have any shear resistance. As a result the soil mass is unstable and causes much destruction. In this research, according to information from boreholes of Tabriz Urban Train Line 2 all required parameters including total stresses, pore water pressures and effective stresses, the results according to soil type and water depth for all 53 preliminary boreholes were …

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Soil Property Improvement Using Slag Binder, Gennadii Boldyrev, Ilya Idrisov Apr 2013

Soil Property Improvement Using Slag Binder, Gennadii Boldyrev, Ilya Idrisov

International Conference on Case Histories in Geotechnical Engineering

In the majority of cases this is cement, which is used for soil improvement both for sandy soils and clays in order to increase its strength and reduce its compressibility. However this effect could be reached by using lime or in some cases slag binder for soil improvement. Comparing with cement and lime blast furnace slag used for improvement of soft clays prove more effective. Soils can be improved by means of wet soil mixing or dry soil mixing. The result is that we get a new composite material and its strength is much higher when comparing with natural soils. …

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Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar Apr 2013

Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar

International Conference on Case Histories in Geotechnical Engineering

This paper presents a case study example of appropriate method selection of stabilization and reinforcement of slope by introducing engineering and economical aspects. Introduced slope is located in science and research campus of Islamic Azad University (IAU) in north of Tehran with height of 4-29 m and length of 370 m. A big building with 9 floors and total area of 70000 square meters is located upper and near edge of slope, so that existence of this building has increased sensitivity of projects design and construction method. Slope is located in vulnerable area with a high risk of seismicity based …

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Static And Cyclic Triaxial Testing Of A Compacted Limestone Rockfill, Hamid Fallah Apr 2013

Static And Cyclic Triaxial Testing Of A Compacted Limestone Rockfill, Hamid Fallah

International Conference on Case Histories in Geotechnical Engineering

The results of large scale static and cyclic triaxial tests for the Siah Bishe rockfill are presented. The test specimens are made of a modeled gradation with Dmax of 5 cm, reduced from the real Dmax of 80 cm by scalping method. Static triaxial tests resulted in the rockfill shear strength parameters within the expected range. The cyclic triaxial strength tests showed that the dam body rockfill failure criterion is not affected by earthquake loading. On the other hand, the cyclic triaxial parametric tests results were used to define shear modulus and damping curves of the compacted rockfill, …

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The Investigation Of Salinity Effects On Behavioral Parameters Of Fine-Grained Soils, Hadiseh Mansouri, Rassoul Ajalloeian, Amir Hossein Sadeghpour Apr 2013

The Investigation Of Salinity Effects On Behavioral Parameters Of Fine-Grained Soils, Hadiseh Mansouri, Rassoul Ajalloeian, Amir Hossein Sadeghpour

International Conference on Case Histories in Geotechnical Engineering

The present paper aims at investigating the effect of water salinity on engineering properties of fine-grain soil. Saline water used in this study was obtained from half saline water of Ajichay River (with TDS more than 1877 ppm) and saline branch of Korchay (with TDS more than 97000 ppm) located in Northwestern of Iran. Fine-grain soil studied is from Korchay dam core. Due to the high hardness of water in this river, the feasibility of using saline water as the water required in clay core of the dam process has been studied in this research. The experiments were performed including …

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The Use Of High Strength Geosynthetics In Deep Soil Mixed Levee Foundations, Brian C. Baillie Apr 2013

The Use Of High Strength Geosynthetics In Deep Soil Mixed Levee Foundations, Brian C. Baillie

International Conference on Case Histories in Geotechnical Engineering

The construction and design of flood protection embankment levees within coastal areas has become a focal point for infrastructure management. The levees are usually constructed over soils with very poor bearing capacity due to their proximity to flood plains. The foundation soils create issues with long-term settlement, changing the protection height and creating the need to periodically build the levee back to the design height. In order to reduce settlements and the maintenance required to preserve design height protection, a deep foundation is needed for proper long term load transfer. Deep soil mixing (DSM) has become a popular deep foundation …

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Treating The Expansive Soil Subgrade On The Goaf Of Middle-Shallow Layer By Dynamic Compaction With Geogrid Reinforcement, Yang He-Ping, Zhang Bin, Yin Jin-Tao, Zhang Jin Apr 2013

Treating The Expansive Soil Subgrade On The Goaf Of Middle-Shallow Layer By Dynamic Compaction With Geogrid Reinforcement, Yang He-Ping, Zhang Bin, Yin Jin-Tao, Zhang Jin

International Conference on Case Histories in Geotechnical Engineering

Middle-shallow layer goaf left after the excavation of small coal mines in expansive soil areas always brings much trouble to expressway construction, the section of K21 +400~K22 +550 of Nanning outer ring expressway under construction faces such a situation. Based on the grasp of geological condition of the goaf, related national technical specifications and existing technical research about treatment, the dynamic compaction with geogird reinforcement method is applied to settle the roadbed with a good result showed in the field testing. This paper introduces the geological condition and stability evaluation of the goaf, and emphatically presents the technical note, construction …

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M74 Motorway, Glasgow – Geotechnical Aspects Of Design And Construction, Paul Nowak Apr 2013

M74 Motorway, Glasgow – Geotechnical Aspects Of Design And Construction, Paul Nowak

International Conference on Case Histories in Geotechnical Engineering

The 7.8 kilometre long M74 Completion project forms the final part of the motorway box around the city of Glasgow. Construction commenced in May 2008 and was completed in June 2011. The urban route corridor presented many geotechnical challenges to the design and construction teams. It is underlain by Recent, lightly over-consolidated Clyde Alluvium of maximum 35 metres thickness over Glacial Till and Carboniferous Coal Measure Sandstone bedrock. Additionally, it was the location of industries over the 19th and 20th centuries which deposited waste over the natural ground containing chromium, steel works slag and hydrocarbons. The route corridor is also …

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Ground Engineering For The Autoroute 30 Ppp Project, Montréal Canada, Chris Barker, Alan Phear, Romeo Ciubotariu, Robert Talby, Paul Quigley, Richard Deakin, Andrew Cushing Apr 2013

Ground Engineering For The Autoroute 30 Ppp Project, Montréal Canada, Chris Barker, Alan Phear, Romeo Ciubotariu, Robert Talby, Paul Quigley, Richard Deakin, Andrew Cushing

International Conference on Case Histories in Geotechnical Engineering

At CAD $1.54B, the Nouvelle Autoroute 30 project is the largest and second Public Private Partnership (PPP) transportation project procured in the province of Québec, Canada. It will operate as a tolled two-lane 42km divided highway with 31 bridges including two major bridge crossings of the St Lawrence River and Beauharnois Canal and a short tunnel. The project is located approximately 30km south-west from downtown Montréal and will relieve traffic congestion on Montréal Island by providing the final section of an alternative southern bypass route. The project is located in a seismic cold climate region and is underlain by deep …

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