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A Guide to Polymeric Geomembranes: A Practical Approach
A Guide to Polymeric Geomembranes: A Practical Approach
John Scheirs
Wiley | English | 2009-11-02 | ISBN: 0470519207 | 596 pages | PDF | 5,2 MB
Geomembranes are flexible polymeric sheets which are used as relatively impermeable liners to contain liquid and vapour. With uses ranging from canal liners to hazard waste landfills, they are used extensively in a range of industries such as water conservation, mining, construction and waste management. A Guide to Polymeric Geomembranes: A Practical Approach offers an informed overview of the developments in this field and includes
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This one-of-a-kind, clearly written sourcebook tackles the Water Pumps and Pumping Systems specific issues and problems you face every day.This much-needed reference provides comprehensive, detailed coverage of pump application and pumped water systems as well as a sound working overview of pump design.
Written by a hands-on expert with almost fifty years in the field, Water Pumps and Pumping Systems thoroughly examines:
• NFPA Fire Standards
• Potable and wastewater pumps
• Installation, operation, and retrofit
• Piping system calculations and friction analysis
• Piping materials
• Fire, municipal, domestic, water treatment, and industrial applications
• Tools of design and design analysis
• Performance issues
• Misinformation about the proper operation of variable-speed pumps
• Old rules that need to be replaced regarding pump speed and allowable velocities in piping
• And more
With almost 200 illustrations and valuable material from the Hydraulic Institute, ANSI, and ASTM, Water Pumps and Pumping Systems offers specialized knowledge and priceless experience that cannot be found in any other water industry reference.
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The construction phases of the Alamillo Bridge were quite complicated, at first conducted an extensive study of soil mechanics, to understand the terrain more favorable for construction, subsurface features revealed the complexity of the work to be loamy sands low volume and expansive, which would require very deep to excavate.
As a result of geological study determined the type of foundation chosen for the mast, consisting of a large concrete as where the mast is embedded, forming a single monolithic piece gives flexibility to the weights and push wind through the steel jacket.
The very foundation is used by the architect to create a terrace overlooking the lap around the perimeter and underneath the bridge structure, exposing the bottom of the bearing structure.
It is an incomplete work on the proposal of providing for Calatrava addition to the current Alamillo Bridge, another twin bridge, perpendicular to the first willing to save the other side of the river, over a viaduct that had to cross to the island of La Cartuja.
The architect devised a human torso crowd pulling tension cable that secures the board with flexibility and balance thanks to its inclination.
The materials used in steel and reinforced concrete white, which makes full of grace and slenderness, is truly monumental sculpture.
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Many engineers only see the static capacity of the structure, forgetting to see beyond the elastic limit. For this I'm posting this article, in order to begin to analyze some problems within the domain elasto-plastic, because even though its beam statically not support, if it is within the domain elasto-plastic, may still be able to recover part deformation gained from the impact.
1.1 Introduction
This Recommended Practice deals with design to maintain the load-bearing function of the structures during accidental events. The overall goal of the design against accidental loads is to achieve a system where the main safety functions of the installation are not impaired.
The Recommended Practice has been developed for general world-wide application. Governmental legislation may include requirements in excess of the provisions of this Recommended Practice depending on type, location and intended service of the unit/installation.
The Design Accidental Loads and associated performance criteria are given in DNV-OS-A101. The Accidental Loads in this standard are prescriptive loads. This Recommended Practice may also be used in cases where the Design Accidental Loads are determined by a formal safety assessment (see DNV-OS-A101, Appendix C) or Quantified Risk Assessment (QRA).
The following main subjects are covered:
— Design philosophy
— Ship Collisions
— Dropped Objects
— Fire
— Explosions.
1.2 Application
The Recommended Practice is applicable to all types of floating and fixed offshore structures made of steel. The methods described are relevant for both substructures and topside structures.
The document is limited to load-carrying structures and does not cover pressurised equipment.
1.3 Objectives The objective with this Recommended Practice is to provide recommendations for design of structures exposed to accidental events.
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Small Bridge T-beam modeling in sap2000 V 14. Generated with bridge modeler (area model)
Lenght Span: 14.00 m
Live Load: HL-93
Other loads: DC, DW, LL
ηD=ηr=ηI=η=1
Design Code: AASHTO LRFD 2007
limite state: strenght I, service I
Result Mu from excel
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Author: Richard F. Fellows, David Langford, Robert Newcombe, Sydney Urry | Size: 12.6 MB | Format:PDF | Quality:Original preprint | Publisher: Wiley-Blackwell | Year: 2002-01-28 | pages: 392 | ISBN: 0632064021, ISBN-13: 9780632064021
While most construction management books are project based, this book looks at management principles and techniques applied to the day-to-day problems facing a business in the construction industry.
It covers:
* Business strategy
* Industrial relations
* Health and safety
* Managing people
* Financial management
* Quantitative methods
The text includes end of chapter review questions and a range of illustrative examples.
Since the book was first written in 1982 much has changed. The Second Edition has been thoroughly revised and takes account of the increased globalisation of construction, the move from public to private sector work, the drive for productivity, changing procurement methods, new emphasis on life cycle costing and much more.
It will provide a valuable text for undergraduate and postgraduate courses in construction management, surveying and civil engineering as well as offering useful insights for practitioners undertaking CPD activities.
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Structural Materials for Innovative Nuclear Systems (SMINS)
These proceedings include the papers and the poster session materials presented at the workshop, representing the international state of the art in this domain.
Structural materials research is a field of growing relevance in the nuclear sector, especially for the different innovative reactor systems being developed within the Generation IV International Forum (GIF), for critical and subcritical transmutation systems, and of interest to the Global Nuclear Energy Partnership (GNEP). Under the auspices of the NEA Nuclear Science Committee (NSC) the Workshop on Structural Materials for Innovative Nuclear Systems (SMINS) was organised in collaboration with the Forschungszentrum Karlsruhe in Germany. The objectives of the workshop were to exchange information on structural materials research issues and to discuss ongoing programmes, both experimental and in the field of advanced modelling.
Table of Contents:
Overview
Keynote Lectures
Gas-cooled Systems
Liquid-metal-cooled Systems
Fusion, High-power Accelerator Targets and Other Fission Reactor Systems
Fundamental Research
Poster Sessions
Other contributions
List of Participants
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Nonlinear analysis methods such as static pushover are globally considered a reliable tool for seismic and structural assessment. But the accuracy of seismic capacity estimates—which can prevent catastrophic loss of life and astronomical damage repair costs—depends on the use of the correct basic input parameters.
Seismic Design Aids for Nonlinear Analysis of Reinforced Concrete Structures simplifies the estimation of those vital parameters. Many design engineers make the relatively common mistake of using default properties of materials as input to nonlinear analyses without realizing that any minor variation in the nonlinear characteristics of constitutive materials, such as concrete and steel, could result in a solution error that leads to incorrect assessment or interpretation.
Streamlined Analysis Using a Mathematical Model
To achieve a more accurate pushover analysis and improve general performance-based design, this book reassesses some key inputs, including axial force-bending moment yield interaction, moment-curvature, and moment-rotation characteristics. It analyzes these boundaries using a detailed mathematical model of reinforced concrete sections based on international codes, and then proposes design curves and tables derived from the authors’ studies using a variety of nonlinear tools, computer programs, and software. The text reviews relevant literature and describes mathematical modeling, detailing numerical procedures step by step.
Including supplementary online material that can be used to compute any parameter, this reference delineates nonlinear properties of materials so that they can be used instantly for seismic analysis without having to solve cumbersome equations.
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Posted by: aslam - 02-07-2010, 02:30 AM - Forum: Archive
- No Replies
Seismic Design with Supplemental Energy Dissipation Devices
by Robert D Hanson and TSU T Soong
The purpose of this monograph is to impart basic concepts of the supplemental energy dissipation technology to design engineers, architects, and buildings officials so they can understand its benefits and limitations in structural applications.
Authors: Robert D Hanson
University of Michigan, Ann Arbor, Michigan
TSU T Soong
State University of New York at Buffalo & Multidisciplinary Centre for Earthquake Engineering Research, Buffalo, New York
Contents
Message from EERI President
Message from NICEE
Foreward
Preface
Acknowledgments
Chapter 1: Introduction
Energy Dissipation Devices
Effect of Viscous Damping on Dynamic Response
Damper-Added Structure versus Traditional Structure
Design and Analysis
Chapter 2: Characterization and Applicability of Dampers
Metallic Yielding and Friction Devices
VE Solid Devices
Viscous Fluid Devices
Summary of Equivalent Damping and Stiffness
Applicability
Chapter 3: Analysis of Damper- Added Structures
Nonlinear Structure/Nonlinear Damper (NS/ND) Procedure
Nonlinear Structure/Linearized Damper (NS/LD) Procedure
Linear Structure/Nonlinear Damper (LS/ND) Procedure
Linear Structure/Linearized Damper (LS/LD) Procedure
Chapter 4: Damper Design for Structural Applications
General Considerations
Design Procedure
Design Examples
Application Examples
References
Appendix A: Nonproportional Damping Eigenvalue Solution
SDOF—Undamped System
SDOF—Viscous Damped System
MDOF—Undamped System
MDOF—Proportionally Damped System
MDOF—Nonproportionally Damped System
Appendix B: Code Development
Background
Appendix 13 for FEMA 368
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