This document gives guidance on the creation of computer models for steel structures with orthodox details and connections in order to produce safe, cost effective, real structures. It is primarily aimed at structural engineers using readily available analysis software. It highlights the importance of a qualitative understanding of structural response both during the creation of the analysis model and whilst appraising the analysis output.
After a general introduction to the elastic, plastic and elastic-plastic analysis of two and three dimensional frames, separate chapters address the modelling of:
- a simple beam and column frames
- a trusses and lattice girders
- a portal frames
- a curved, tapered and non homogeneous members connections
- a supports
- a loads
It also provides guidance on simple checks to ensure the analysis is correct and an overview of member design for the less experienced designer.
This guide is limited to the modelling of general building and plant structures of normal proportions under static loading. Offshore structures, masts, bridges, shells and plates are not covered, nor is grillage analysis. The guide concentrates on first order analysis programs. Second order analysis is discussed, but both the analysis and the type of structure requiring second order analysis are outside the scope of this document.
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Groundwater Flow Understanding: From Local to Regional Scale (IAH - Selected Papers on Hydrogeology)
Author: J.J.Carrillo-Rivera, M.Adrian Ortega Guerrero, Oretega Guerrero Ortega G. | Size: 5.4 MB | Format:PDF | Publisher: Taylor & Francis | Year: 2008 | pages: 200 | ISBN: ISBN10: 0415436788
Book Description:
Any sustainable groundwater development programme requires knowledge of the prevailing flow system, extending from local to regional scale. This book of selected papers discusses integral groundwater management with scale flow issues and presents methods of defining, preventing, controlling and mitigating negative environmental impacts related to groundwater. It highlights specific issues such as trans-boundary groundwater flow, groundwater recharge, groundwater mining, and groundwater flow in thick aquifers, and stresses the importance of the sustainable development of groundwater and its social and economic implications. The book will interest groundwater researchers and professionals, students, government administrators and educators, providing new insights into the procedures and processes that are influenced by the scale of the groundwater flow system.
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Book Description:
* Provides a viable reference, describing the state-of-knowledge on sources of arsenic contamination in ground water, which affects about 100 million people worldwide.
* With contributions from world-renowned experts in the field, this book explores developments in the transport kinetics, detection, measurement, seasonal cycling, accumulation, geochemistry, removal, and toxicology of arsenic.
* Includes compelling case studies describing how arsenic contamination occurs and the devastating effects on the people and environment affected by it.
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Urban Groundwater Pollution: IAH International Contributions to Hydrogeology 24 (Intl Asso. for Hydro., Intl. Contr. to Hydro)
Author: David N.Lerner | Size: 5.50 MB | Format:PDF | Publisher: Taylor & Francis | Year: 2003 | pages: 296 | ISBN: ISBN10: 9058096297 & ISBN13: 9789058096296
Product Description:
More than 50% of the world's population already live in cities, and the proportion is rising extremely rapidly towards developed country levels of more than 90%. Groundwater from wells is the major source of water supply for many of these cities, however, groundwater is polluted by the cities that overlie it and sewerage systems are often absent, or leak. Industrial landuse implies the use of large quantities of chemicals, and it is the poor disposal and accidental spillage of these chemicals which results in the contamination of virtually every industrial site in the world. Much of this pollution migrates deeper to damage groundwater. Groundwater has slow turnover time, often measured in decades and centuries, reducing the self-cleansing capacity. Urban aquifers are therefore vitally important but very fragile, easily damaged and slow to repair. Urban groundwater problems and solutions vary greatly around the world. Mature cities often have remote and clean water supplies, good sewerage systems, strict controls on groundwater and land use, and declining industries. However, they have a legacy of more than one hundred years of waste disposal and industrially-contaminated land which continues to cause problems. Rapidly urbanising cities are frequently dependent on local groundwater and have poor sanitation and uncontrolled industry. These factors present many immediate risks to human health. This book explains the nature and value of urban groundwater, discussing the types of pollutants that are found, and their sources. The unique aspect of this book is the in-depth discussion of six different urban environments, complete with case studies. These environments are: Mature industrial cities; Arid-zone cities; Weathered crystalline aquifers in sub-Saharan Africa; Cities overlying karst aquifers; Alluvial aquifer systems; Shallow aquifers in Mediterranean climates.
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Author: Ravindra Khattree, Dayanand N. Naik | Size: 1.90 MB | Format:PDF | Publisher: John Wiley and Sons | Year: 2000 | pages: 363 | ISBN: ISBN-10: 0471322997 & ISBN-13: 978-0471322993
Book Description:
Real-world problems and data sets are the backbone of this book, which provides a unique approach to the topic, integrating statistical methods, data analysis, and applications. Now extensively revised, the book includes new information about mixed effects models, applications of the MIXED procedure, regression diagnostics with the corresponding IML procedure code, and covariance structures. The authors' approach to the information will aid professors, researchers, and students in a variety of disciplines and industries. Extensive SAS code and the corresponding high-resolution output accompany sample problems, and clear explanations of SAS procedures are included. Emphasis is on correct interpretation of the output to draw meaningful conclusions. Featuring both the theoretical and the practical, topics covered include multivariate analysis of experimental data and repeated measures data, graphical representation of data including biplots, and multivariate regression. In addition, a quick introduction to the IML procedure with special reference to multivariate data is available in an appendix. SAS programs and output integrated with the text make it easy to read and follow the examples.
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Dear Friends
I need the following Reports for my thesis. If any body have ,please share them
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Mechanical Behavior of Multi-Spherical Sliding Bearings
Author: Daniel M. Fenz and Michael C. Constantinou | Size: 4.08 MB | Format:PDF | Publisher: MCEER | Year: 2008 | pages: 186
This report describes the principles of operation and the development of cyclic force-displacement relationships for three variations of multi-spherical sliding bearings: the double FP bearing, the triple FP bearing, and the modified single FP bearing. The force-displacement relationships of devices with increasingly complex behavior were determined by extending the fundamental principles of operation that apply to sliding on a single concave surface. It was shown that each device is capable of exhibiting displacement dependent adaptive behavior, i.e., desirable changes in stiffness and damping over the course of motion. These changes are determined by the relative values of each surface’s coefficient of friction, effective radius of curvature, and displacement capacity. Since all are predefined design parameters (aside from the inherent uncertainty and variability in the coefficient of friction), their behavior is completely controllable by the engineer. In addition, it was shown that in cases where multiple surfaces are of equal friction, the complexity of behavior exhibited by these devices is reduced. This is important because bearings of smaller plan dimension can still use familiar and proven methods of analysis and design, resulting in significant cost savings. A future report will detail the development, experimental verification and application of tools for dynamic analysis of structures isolated with these bearings.
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