Database of Friction Angles of Sand and Consolidation Characteristics of Sand, Silt, and Clay
Author: Andersen, K. and Schjetne, K. | Size: 3.1 MB | Format:PDF | Quality:Unspecified | Publisher: ASCE | Year: 2013 | pages: 16
The paper presents diagrams of the (1) drained and undrained effective stress friction angles of sand; (2) dilatancy angle of sand; (3) parameters in a nonlinear constrained modulus expression for virgin loading, unloading, and reloading on sand and silt; and (4) diagrams with the coefficient of permeability for sand, silt, and clay. The database parameters are suitable for preliminary assessments or applications when assumed parameters are acceptable. The database can also be helpful in planning and interpreting site-specific tests and in reducing the number of site-specific tests. For important projects the parameters should be determined by site-specific tests
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I am searching for this research paper :
"Approximate Formulae for Determining the Effective Length of Steel Columns to BS 5950" By Author(s): Smyrell, A G
Published in March 1993 issue of "The Structural Engineer " Journal of Institution of Structural Engineer London
Preface :
This paper presents approximate formulae that may be used to determine the effective length of steel columns designed to BS 5950. These formulae give the designer an alternative to the graphical method given in Appendix E of the Code. The approximate formulae are normally accurate to better than the second decimal place. This approach follows the development of simple computer routines for incorporation into column and frame design programs. A.G. Smyrell
the journal can be found here :
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if anybody can find the following journal I'll be extremely grateful !!!!!
Author: Bernhard Maidl, Martin Herrenknecht, Ulrich Maidl, Gerhard Wehrmeyer, David Sturge | Size: 68 MB | Format:PDF | Quality:Unspecified | Publisher: Ernst & Sohn | Year: 2012 | pages: 490 | ISBN: 9783433029954
Mechanised shield tunnelling has developed considerably since the publication of the first edition of this book. Challenging tunnel projects under difficult conditions demand innovative solutions, which has led to constant further development and innovation in process technology, constructions operations and the machines and materials used.The book collects the latest state of technology in mechanised shield tunnelling. It describes the basics of mechanised tunnelling technology and the various types of machines and gives calculation methods and constructural advice. Further chapters cover excavation tools, muck handling, tunnel support, surveying and steering as well as workplace safety. There is also detailled information about contractual aspects and process controlling.
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The only modern guide to all aspects of practical tunnel construction
Practical Tunnel Construction fills a void in the literature for a practical guide to tunnel construction.
By taking the reader through a brief introduction and history to a comprehensive discussion of how the geological factors affect tunneling, the author covers the stages and technology that are common today without using complex equations. Written for the individual who does not have an extensive background in tunneling but who has to make tunneling decisions, the various tunneling methods are discussed to help in the determination of the appropriate method. The methods discussed are: hand mining, drill/blast, Tunnel Boring Machine (TBM), New Austrian Tunnelling Method (NATM), Norwegian Method of Tunnelling (NMT), Roadheader, Earth Pressure Balance Machine (EPBM), and Slurry Pressure Balance Machine (SPBM). This book focuses on driven tunnels.
This versatile handbook:
• Offers clear and accessible coverage of the state of the art in tunnel construction
• Introduces the essentials of design and construction of many types of tunnels, including TBM, EPB, Roadheader, NATM, drill and blast, and soft ground tunneling
• Provides nontechnical guidance on selecting the most appropriate tunneling methods for various situations
• Includes a brief history of tunneling and an introduction to geotechnical considerations
• Discusses tunnel access shaft construction, mucking methods, tunnel haulage, grout, water handling, and much more
Practical Tunnel Construction is an important resource for students, construction managers, tunnel designers, municipal engineers, or engineers who are employed by government agencies or corporations that are exploring the feasibility of planning and designing or building a tunnel.
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An Introduction to cable roof structures - 2nd Edition
Author: Hans Anton Buchholdt | Size: 10.5 MB | Format:PDF | Quality:Unspecified | Publisher: Thomas Telford Ltd | Year: 1987 | pages: 304 | ISBN: 9780727726247
The second edition of this book provides structural engineers with a concise introduction to the architectural, structural and technological aspects of cable roofs, and supplies sufficient information for engineers to carry out their own designs. The improved methods for generating wind and earthquake histories have been included as the trend in modern design codes seem increasingly to require that dynamic response of other forms of non-linear structures such as guyed masts is considered at the design stage. Other additions include an expansion of the chapter on dynamic analysis into three separate chapters, one dealing with frequency domain analysis of weakly non-linear structures, another with time domain analysis of more non-linear structures, and a third with the level and mathematical modelling of damping.
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Posted by: MarcinX - 06-10-2013, 09:46 AM - Forum: Archive
- No Replies
Dear Engineers,
I am looking for Lithuanian standards but I can't find anything. Maybe You have scans or photos of papers (national annexes of LST EN for example).
If not, maybe someone could give me information about snow and wind loads in Lithuania.
I am using Eurocodes but It would be good if You have even old standards.
Thanks a lot!
FIP Model Code 2010 - Final draft - Bulletins 65 & 66
fib Bulletin No. 65 & 66
Title: Model Code 2010 - Final draft, Volumes 1 & 2
Category: Draft model code
Year: 2012
Format approx. DIN A4 (210x297 mm)
The Model Code for Concrete Structures is intended to serve as a basis for future codes. It takes into account new developments with respect to concrete structures, the structural material concrete and new ideas for the requirements to be formulated for structures in order to achieve optimum behaviour according to new insights and ideas. It is also intended as a source of information for updating existing codes or developing new codes for concrete structures. At the same time, the Model Code is intended as an operational document for normal design situations and structures.
This edition of the Model Code gives an extensive state-of-the-art regarding material properties for structural concrete. This includes constitutive relations for concrete up to strength class C120, and properties of reinforcing and prestressing steel, including prestressing systems. Special attention is given to the application of fibre concrete for structural applications, the application of non-metallic reinforcement, interface characteristics, verification assisted by numerical simulations, verification assisted by testing, and to a number of important construction aspects.
The Model Code 2010 is more 'life cycle' oriented than its predecessors. Reliability plays an important part: various methods are offered to cope with this aspect. The design of concrete structures is described for a large number of conditions. Design criteria are given with relation to reliability, functionality, durability and sustainability, where the last category is in the state of development. The chapter on conservation of structures provides insights into the degradation of concrete as a function of various types of environmental conditions. Attention is given to non-traditional types of reinforcement as well, like steel fibres and FRP, which have reached a status of recognition in the previous years.
Design rules for serviceability and ultimate limit states are given for a wide range of conditions, such as static and non-static loading (fatigue, impact and explosion, earthquake), high and low temperatures (fire and cryogenic). Furthermore limit states for durability are given. Design for sustainability will be an important task in the future; here some initial ideas are given. Design for robustness is also given due attention.
This document is following the first complete draft of the fib Model Code 2010.
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i have seen a video where in etabs v12 footing design is included. but in etabs 2013 its no longer there. that video in youtube habibolla himself demonstrate that video. any comments?
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