Posted by: Grunf - 10-21-2010, 06:43 AM - Forum: EN
- Replies (3)
EN 10080 - Steel for the reinforcement of concrete
May 2005
English version
Steel for the reinforcement of concrete - Weldable reinforcing
steel - General
Description:
BS EN 10080:2005
Weldable steel for the reinforcement of concrete has become subject to the European Standard, BS EN 10080. This standard went back and forth over many years seeking a pragmatic agreement amongst Europeans on how to standardise reinforcement. In other words, it has taken a long time to move from being a mandated standard (one that the European Commission asked CEN to prepare) to being a harmonised standard. In 2008 it had to be withdrawn as a harmonized standard because some countries legal requirements for additional proprties of reinforcement were not met. However, it was implemented in the UK in late 2005 and its subsequent withdrawl has no effect on BS 4449 etc.
BS EN 10080:2005 gives no actual specification or figures that is left to the National Standards. requires that technical classes should be specified by values of:
* Re, yield strength;
* Rm/Re, Ratio of tensile strength/Yield strength,
* Agt, Percentage total elongation at maximum force,
* Re,act/Re,nom (where appropriate), Ratio of actual to specified value of yield strength,
* fatigue strength,
* bend performance,
* weldability,
* bond strength,
* tolerances and
* dimensions.
It contains an informative Annex ZA, which describes how the standard may be used for the purposes of CE marking. Please note that the CE mark is not a quality mark. It merely identifies the product as complying with the essential requirement laid down by the European Commission in their 'mandate' to CEN. CE marking is not a requirement of BS 4449:2005.
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Posted by: ir_71 - 10-21-2010, 06:29 AM - Forum: EN
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EN 196-1: 2005 Methods of testing cement - Part 1: Determination of strength
This document describes the method for the determination of the compressive and, optionally, the
flexural strength of cement mortar. The method applies to common cements and to other cements
and materials, the standards for which call up this method. It may not apply to other cement types that
have, for example, a very short initial setting time.
The method is used for assessing whether the compressive strength of cement is in conformity with
its specification and for validation testing of a CEN Standard sand, EN 196-1, or alternative
compaction equipment.
This document describes the reference equipment and procedure and allows alternative compaction
equipment and procedures to be used provided that they have been validated in accordance with the
appropriate provisions in this document. In the event of a dispute, only the reference equipment and
procedure are used.
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Posted by: ir_71 - 10-21-2010, 04:59 AM - Forum: Concrete
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Concrete Society TR 18 A Guide to Chemical Admixtures for Concrete 1ed.
TR 18 A Guide to Chemical Admixtures for Concrete 1ed.
Catalogue ID: TR18
Publisher: The Concrete Society
This is a non-technical introduction and guide to admixtures selection. It is written for site engineers, consulting engineers, architects and others who are not necessarily materials specialists. This new edition has been fully updated and revised according to current practice. The guide is intentionally pragmatic with a view to encouraging informed and responsible admixture use. It recognises the many applications of admixtures and their effects on the properties of concrete in the plastic and hardened state.
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Publisher: The Concrete Society
Reviews polymer types and their use in concrete. Explains the main types and their chemical basis and applications. As polymer concretes are often used with conventional concrete for repair and protection, surface preparation for adhesion is discussed. Describes acceptance and performance requirements, and development of national and international standards. Gives numerous references. 2nd edition 1994 - 32 pages
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Posted by: tynhanh - 10-21-2010, 03:12 AM - Forum: Archive
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Strength of Fine Grained Soils using the Piezocone.
Keaveny, J.M. and Mitchell, J.K. 1986.
Proceedings of In-situ 86, Geotechnical Engineering Division, ASCE, New York, 668-685.
Petroleum Reservoir Engineering Practice By Nnaemeka Ezekwe
Petroleum Reservoir Engineering Practice
Nnaemeka Ezekwe
Publisher: Prentice Hall 2010
ISBN: 0137152833
816 Pages PDF 7 MB
The Complete, Up-to-Date, Practical Guide to Modern Petroleum Reservoir Engineering
This is a complete, up-to-date guide to the practice of petroleum reservoir engineering, written by one of the world’s most experienced professionals. Dr. Nnaemeka Ezekwe covers topics ranging from basic to advanced, focuses on currently acceptable practices and modern techniques, and illuminates key concepts with realistic case histories drawn from decades of working on petroleum reservoirs worldwide.
Dr. Ezekwe begins by discussing the sources and applications of basic rock and fluid properties data. Next, he shows how to predict PVT properties of reservoir fluids from correlations and equations of state, and presents core concepts and techniques of reservoir engineering. Using case histories, he illustrates practical diagnostic analysis of reservoir performance, covers essentials of transient well test analysis, and presents leading secondary and enhanced oil recovery methods.
Readers will find practical coverage of experience-based procedures for geologic modeling, reservoir characterization, and reservoir simulation. Dr. Ezekwe concludes by presenting a set of simple, practical principles for more effective management of petroleum reservoirs.
With Petroleum Reservoir Engineering Practice readers will learn to
* Use the general material balance equation for basic reservoir analysis
* Perform volumetric and graphical calculations of gas or oil reserves
* Analyze pressure transients tests of normal wells, hydraulically fractured wells, and naturally fractured reservoirs
* Apply waterflooding, gasflooding, and other secondary recovery methods
* Screen reservoirs for EOR processes, and implement pilot and field-wide EOR projects.
* Use practical procedures to build and characterize geologic models, and conduct reservoir simulation
* Develop reservoir management strategies based on practical principles
Throughout, Dr. Ezekwe combines thorough coverage of analytical calculations and reservoir modeling as powerful tools that can be applied together on most reservoir analyses. Each topic is presented concisely and is supported with copious examples and references. The result is an ideal handbook for practicing engineers, scientists, and managers—and a complete textbook for petroleum engineering students.
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Practical Manual of Land Development Barbara Colley
Practical Manual of Land Development
Barbara Colley
4th Edition
McGraw-Hill Professional
ISBN: 0071448667 June 2005
PDF 369 pages English 7.4 MB
The first choice among land development engineers, this edition is newly updated and expanded. It is required reading for young engineers and a convenient reference for experienced engineers. This is the essential book for civil engineers in land development and provides helpful information for all land development professionals including feasibility studies and cost estimating.
Practical Manual of Land Development provides step-by-step instructions for design, including formulas, tools, technical data, guidelines, and checklists to make your development project run smoothly. The Forth Edition emphasizes efficient usage of computers and now includes specifications for ADA and NPDES. It is presented in metric as well English units. New chapters added and charts up-dated.
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Fundamentals of Environmental Sampling and Analysis
Fundamentals of Environmental Sampling and Analysis
Author(s): Chunlong Zhang
Publisher: Wiley-Interscience
Date : 2007
Pages : 458
Format : PDF
Language : English
ISBN-10 : 0471710970
ISBN-13 :
Size: 3.70 MB
An integrated approach to understanding the principles of sampling, chemical analysis, and instrumentation
This unique reference focuses on the overall framework and why various methodologies are used in environmental sampling and analysis. An understanding of the underlying theories and principles empowers environmental professionals to select and adapt the proper sampling and analytical protocols for specific contaminants as well as for specific project applications. Covering both field sampling and laboratory analysis, Fundamentals of Environmental Sampling and Analysis includes:*
A review of the basic analytical and organic chemistry, statistics, hydrogeology, and environmental regulations relevant to sampling and analysis*
An overview of the fundamentals of environmental sampling design, sampling techniques, and quality assurance/quality control (QA/QC) essential to cquire quality environmental data
*
A detailed discussion of: the theories of absorption spectroscopy for qualitative and quantitative environmental analysis; metal analysis using various atomic absorption and emission spectrometric methods; and the instrumental principles of common chromatographic and electrochemical methods*
An introduction to advanced analytical techniques, including various hyphenated mass spectrometries and nuclear magnetic resonance spectroscopy
With real-life case studies that illustrate the principles plus problems and questions at the end of each chapter to solidify understanding, this is a practical, hands-on reference for practitioners and a great textbook for upper-level undergraduates and graduate students in environmental science and engineering.
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Product Description
The critically acclaimed serialized review journal for nearly fifty years, Advances in Geophysics is a highly respected publication in the field of geophysics. Since 1952, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with over 45 volumes, the Serial contains much material still relevant today-truly an essential publication for researchers in all fields of geophysics.
Preface (V.Maupin, R.S. Wu).
Chapter 1. Seismic ray method: recent developments (V. Cerveny. L. Klimes, I. Psencik).
Chapter 2. Introduction to mode coupling methods for surface waves (V. Maupin).
Chapter 3. Boundary integral equations and boundary elements methods in elastodynamics (M. Bouchon, F. Sanchez-Sesma).
Chapter 4. Generation and propagation of seismic SH waves in multilayered media with irregular interfaces (X.F. Chen).
Chapter 5. One-way and one-return approximations (de Wolf approximation) for fast elastic wave modelling in complex media (R.S. Wu, X.B. Xie, X.Y. Wu).
Chapter 6. Simulation of high-frequency wave propagation in complex crustal waveguides using generalized screen propagators (R.S. Wu, X.Y. Wu, X.B. Xie).
Chapter 7. Spectral-element analysis in seismology (E. Chaljub, D. Komatitsch, et al.).
Chapter 8. The finite-difference time-domain method for modeling of seismic wave propagation (P. Moczo, J. Robertson, L. Eisner).
Chapter 9. A Lattice Boltzmann approach to acoustic-wave propagation (L. Huang).
Chapter 10. Synthesis of seismogram envelopes in heterogeneous media (H. Sato, M. Fehler).
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