Could somebody provide me with the following paper?
"Calculation of the compression index and precompression stress from soil compression test data."
Soil Tillage Res. 89, 45–57.
Gregory, A.S., Whalley,W.R.,Watts, C.W., Bird, N.R.A., Hallet, P.D.,
Whitmore, A.P., 2006.
Strut-and-Tie Model for Deep Beam Design
A PRACTICAL EXERCISE USING APPENDIX A OF THE 2002 ACI BUILDING CODE. BY JAMES K WIGHT AND GUSTAVO J. PARRA-MONTESINOS, 8 PAGES, SIZE: 156Kb
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Comparative Study of Methods of Determination of Coefficient of Subgrade Reaction
ABSTRACT
In this paper, different methods proposed for determination of the coefficient of subgrade reaction, ks are discussed, compared and evaluated for their suitability and accuracy. The geotechnical characteristics of a site on Tabriz Marl were selected as the base data and settlement analysis results with different methods were compared with that of obtained from analyses with advanced soil models using Safe and Plaxis software. It was discovered that for Tabriz Marl, soft soil model is the best governing model and Vesic relation among the methods of determination of ks leads to a negligible error in comparison to the soft soil model.
Also, in order to achieve more accurate results from these methods, it is proposed to use mean elasticity modulus which takes into account the effect of geometric and mechanical properties of sub-layers.
KEYWORDS: Winkler model, soft soil model, coefficient of subgrade reaction, modulus of elasticity, settlement.
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Spawned by growing interest in ultrasonic technology and new developments in ultrasonic melt processing, the Second Edition of Ultrasonic Treatment of Light Alloy Melts discusses use of ultrasonic melt treatment in direct-chill casting, shape casting, rapid solidification, zone refining, and more, exploring the effects of power ultrasound on melt degassing, filtration, and refinement in aluminum and magnesium alloys.
The fully revised and restructured Second Edition:
• Contains new, in-depth coverage of composite and nanocomposite materials
• Provides a historical review of the last century of ultrasonic applications to metallurgy
• Emphasizes the fundamentals, mechanisms, and applications of ultrasonic melt processing in different light-metal technologies
• Features new chapters on ultrasonic grain refinement, refinement of primary solid phases, and semi-solid processing of billets with nondendritic structure
• Includes significant updates reflecting results obtained over the past two decades on different scales, from laboratory to full-scale industrial implementations
Complete with many new figures and examples, Ultrasonic Treatment of Light Alloy Melts, Second Edition delivers a comprehensive treatise on ultrasonic melt processing and cavitation, presenting essential guidelines for practical use and further development of the technology.
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As concern grows over environmental issues and light pollution, this book satisfies a need for a straightforward and accessible guide to the use, design and installation of outdoor lighting.
This all-inclusive guide to exterior lighting from the Institution of Lighting Engineers, recognized as the pre-eminent professional source in the UK for authoritative guidance on exterior lighting, provides a comprehensive source of information and advice on all forms of exterior lighting, from floodlighting, buildings and road lighting to elaborate Christmas decorations. Useful to practitioners and non-experts alike, specialists will value the dependable detail on standards and related design, installation and maintenance problems, whilst general professionals can find extensive practical guidance on safety issues, the lighting of hazardous areas and avoiding potential difficulties.
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The aim of the book is the presentation of the fundamental mathematical and physical concepts of continuum mechanics of solids in a unified description so as to bring young researchers rapidly close to their research area. Accordingly, emphasis is given to concepts of permanent interest, and details of minor importance are omitted. The formulation is achieved systematically in absolute tensor notation, which is almost exclusively used in modern literature. This mathematical tool is presented such that study of the book is possible without permanent reference to other works.
djvy 3.2MB
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Much of the convenience of modern life resides in sheet metal, the cowling shield of most machines and appliances. However, the load that this takes off human shoulders has to be carried elsewhere, and the Earth has borne the burden. Many of us woke up to the environmental cost when over a century of industrialization finally surpassed the capacity of nature to assimilate it.
International in scope, Heavy Metals in the Environment: Using Wetlands for Their Removal discusses wetland functions and heavy metal contamination. It addresses such questions as: Can systems powered by sunlight handle toxins more effectively than systems running on fossil fuel? At what scale and by what means do we define efficiency? These questions resonate increasingly with a number of global challenges.
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Author: Y. Richard Kim | Size: 61.9 MB | Format:PDF | Quality:Unspecified | Publisher: CRC Press | Year: 2014 | pages: 1966 | ISBN: 113802693X
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MITIGATION OF SEISMIC POUNDING BETWEEN ADJACENT BUILDINGS
Author: A. Hameed, M. Saleem, A.U. Qazi, S. Saeed* and M. A. Bashir | Size: 661 KB | Format:PDF | Quality:Unspecified | Publisher: Pakistan Journal of Science (Vol. 64 No. 4 December, 2012) | Year: 2012 | pages: 08
Adjacent buildings during an earthquake may collide against each other when, owing to their different dynamic characteristics, the buildings vibrate out of phase and the at-rest separation distance is inadequate to accommodate their relative motions. Seismic pounding can cause severe damage to the structures. Such buildings are usually separated by an expansion joint which is insufficient to accommodate the lateral movements of buildings under earthquakes. While seismic pounding can be prevented by providing adequate safe code specified separation distances, sometimes getting of required safe separations is not possible in metropolitan areas because buildings are built very close to each other due to high land value, limited availability of land space, the need for centralized facilities under one roof and/or often ignoring the likelihood of seismic pounding between adjacent buildings during design. If building separations in metropolitan areas found to be deficient to prevent pounding, then there should be some secure and cost-effective retrofitting methods to mitigate
structural pounding. This research work covers the mitigation techniques of pounding between adjacent buildings due to earthquakes. Use of shear wall, bracing system and friction dampers are proposed as possible mitigation techniques.
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Author: R. Shafiei-Tehrany, M. ElGawady*, W. Coffer | Size: 872 KB | Format:PDF | Quality:Unspecified | Publisher: Electronic Journal of Struct ural Engineering 11(1) 2011 | Year: 2011 | pages: 10
Nonlinear pushover analysis is a powerful tool for evaluating the inelastic seismic behavior of structures. This paper presents a detailed seismic analysis of a complex bridge. The I-5 Ravenna Bridge was assessed through nonlinear pushover analyses that highlights many important issues of bridges constructed on hollow core prestressed concrete piles. A three dimensional finite element analysis of the bridge have been carried out including modeling of the bridge bearings, expansions joints, and soil-structure interaction. The nonlinear response of the bridge was investigated from the first pier hinging to the inelastic equilibrium condition using three different response spectrums representing ground motions with different return periods. The effects on the seismic demand due to period lengthening and damping increase produced by structural deterioration were evaluated. The effects of three different soils on the bridge performance were investigated as well. Using dense sand increased the stiffness of the system and the ductility capacity. In addition, change the soil type has insignificant effect on the post-yielding stiffness of the bridge
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