This comprehensive text explores the technologies and developments in excavations for any type of surface or underground excavation. The first several chapters cover unit operations, including drilling, explosives and blasting, mucking, haulage, hoisting, and supports and reinforcement. The book then describes excavation techniques for various operations, such as tunneling, raising, sinking, drifting, stoping, quarrying and surface mining, underground mining, pillar blasting, and liquidation. It also examines the design, planning, and analysis of excavations as well as the construction of surface and subsurface excavations, such as caverns. Case studies focus on heavy underground blasting during pillar recoveries.
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Author: DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND | Size: 861 KB | Format:PDF | Publisher: DEPARTMENT OF THE NAVY NAVAL FACILITIES ENGINEERING COMMAND | Year: 1984 | pages: 131
This design manual is one of a series developed from an evaluation of facilities in the shore establishment, from surveys of the availability of new materials and construction methods, and from selection of the best design practices of the Naval Facilities Engineering Command, other Government agencies, and the private sector. This manual uses, to the maximum extent feasible, national professional society, association, and institute standards in accordance with NAVFACENGCOM policy. Deviations from these criteria should not be made without prior approval of NAVFACENGCOM Headquarters (Code 04). Design cannot remain static any more than can the naval functions it serves or the technologies it uses. Accordingly, recommendations for improvement are encouraged from within the Navy and from the private sector and should be furnished to NAVFACENGCOM Headquarters (Code 04). As the design manuals are revised, they are being restructured. A chapter or a combination of chapters will be issued as a separate design manual for ready reference to specific criteria. This publication is certified as an official publication of the Naval Facilities Engineering Command and has been reviewed and approved in accordance with SECNAVINST 5600.16.
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Author: Pavel B. Bochev, Max D. Gunzburger | Size: 10.8 MB | Format:PDF | Publisher: Springer Verlag | Year: 2009 | pages: 660 | ISBN: 0387308881
This book offers a thorough and systematic examination of theoretical and computational aspects of least-squares finite element methods. The range of topics spans from formal mathematical analysis and framework for least squares methods, application of this framework to concrete partial differential equations and discussion of the computational properties of the methods.
The abstract least-squares framework will help readers to first grasp least-squares methods, while the many numerical examples provide a valuable practical guide to these methods. Most of the necessary background material is contained in several appendices.
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A simplified method for flexural capacity assessment of circular RC cross-sections - from ScienceDirect
References and further reading may be available for this article. To view references and further reading you must purchase this article.
Edoardo Cosenzaa, Carmine Galassoa, Corresponding Author Contact Information, E-mail The Corresponding Author and Giuseppe Maddalonib
a Dipartimento di Ingegneria Strutturale, Università degli Studi di Napoli Federico II, via Claudio 21, 80125, Naples, Italy
b Dipartimento per le Tecnologie, Università degli Studi di Napoli Parthenope, Centro Direzionale isola C4, 80143, Naples, Italy
Received 19 August 2010;
revised 17 November 2010;
accepted 1 December 2010.
Available online 5 January 2011.
Abstract
A simplified method for the assessment of bending moment resistance for reinforced concrete (RC) members with circular cross-sections is presented. In the proposed method longitudinal rebars arrangement is replaced with a thin steel ring equivalent to the steel total area; moreover, according to modern codes, simplified stress–strain relationships for concrete and reinforcing steel are used.
The performed analyses demonstrate that the value of flexural capacity determined by the proposed approach, is very close to the results obtained by applying rigorous methods based on analytical and numerical algorithms.
The study also proves that in members subjected to bending moment without axial load, the flexural strength depends on the geometry of the section (i.e. radius and concrete cover) and on mechanical ratio of steel reinforcement by a very simple formula.
…find descriptions of today’s most essential global technologies, clearly structured and simply explained in over 100 expert contributions;
…gain an understanding of the principles behind each technology, – the latest applications, the challenges ahead, and future trends;
…see how and where technologies and topics are interlinked, with cross-references and further sources of information;
…broaden your general knowledge of technology, presented in a comprehensive reference format that invites even the casual reader to explore the stimulating innovative ideas it contains.
This guide is a useful companion for readers with a lively interest in technology. It serves as a reference work for corporate and public-sector decision makers, as well as those involved in media and government.
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Dear our moderators ,
after my suffering with the searching engine and after several duplication from my side ,
I hope from you to clarify by photos , How can I search by the ( author - ISBN - size - etc. ) and if the subject was involved as a (new reply ) in a different post , how can I search?
best regards to all
Sea Level Rise, History and Consequences includes a special emphasis on the evidence for historical sea level change; case studies are used to demonstrate the resulting consequences. Sea level is expected to rise as much as 60-100 centimeters over the next century due to greenhouse-induced global warming -- or at least that is what the some scientists predict. However, the concept of sea level is extremely complex, which makes the prediction of sea level rise anything but certain. The book should be readily accessible to upper division and first-year graduate students in the environmental sciences, geography, geology, and other interdisciplinary fields.
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Guideline for Load and Resistance Assessment of Existing European Railway Bridges
Size: 6 MB | Format:PDF | Year: 2007 | pages: 428
This report is one of the deliverables from the Integrated Research Project “Sustainable Bridges - Assessment for Future Traffic Demands and Longer Lives” funded by the European Commission within 6th Framework Programme. The Project aims to help European railways to meet increasing transportation demands, which can only be accommodated on the existing railway network by allowing the passage of heavier freight trains and faster passenger trains. This requires that the existing bridges within the network have to be upgraded without causing unnecessary disruption to the carriage of goods and passengers, and without compromising the safety and economy of the railways. A consortium, consisting of 32 partners drawn from railway bridge owners, consultants, contractors, research institutes and universities, has carried out the Project, which has a gross budget of more than 10 million Euros. The European Commission has provided substantial funding, with the balancing funding has been coming from the Project partners. Skanska Sverige AB has provided the overall co-ordination of the Project, whilst Luleå Technical University has undertaken the scientific leadership. The Project has developed improved procedures and methods for inspection, testing, monitoring and condition assessment, of railway bridges. Furthermore, it has developed advanced methodologies for assessing the safe carrying capacity of bridges and better engineering solutions for repair and strengthening of bridges that are found to be in need of attention. The authors of this report have used their best endeavours to ensure that the information presented here is of the highest quality. However, no liability can be accepted by the authors for any loss caused by its use.
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