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Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 2883940886 Category : Technology & Engineering Languages : en Pages : 97
Book Description
The realization process of civil engineering structures is complicated, involving a wide variety of disciplines, each of which brings a specific contribution. It is a challenge to structure the process so that a balanced, optimized participation of the many disciplines involved is achieved. One of the critical success factors is knowledge management: each discipline should bring professional knowledge, but they should interact at interfaces as well. Temporary structures are an example of this phenomenon: they are right in the middle of a complex system of interactions between structural engineering, site engineering, work preparation, procurement, and execution. They have a significant impact on cost, construction time, construction methodology and the through-life performance of the actual structure. Formwork and falsework are among the most important elements of temporary structures for civil engineering projects. Knowledge management with respect to formwork and falsework requires engineers to share knowledge and experience in the broadest sense, as the actual performance of formwork and falsework can only be evaluated at a late stage in the realization process, when some disciplines are no longer present. The learning circle can therefore only be closed through feedback. fib Bulletin 48 presents an overview of formwork and falsework techniques and addresses issues related to the design and application thereof. Its objective is to bridge the gap often experienced in practice by effectively feeding back state of the art knowledge and experience with regard to formwork and falsework, thus making a larger group of engineers familiar with the important issues related to the design and application of formwork and falsework. It aims to provide both structural and site engineers with information to design and use formwork and falsework in a safe, reliable, and economic way, thus achieving better interaction between the engineering disciplines involved. Bulletin 48 addresses some fundamental issues related to formwork and falsework: The appearance of the finished concrete, which is closely related to the quality of the formwork. The performance of the finished concrete in relation to durability and as part of Life Cycle Management. The need to support the concrete while it acquires enough strength and stiffness to support itself. In this context the most important issue is structural safety. The guidelines given in this document are based on the experience of site and design engineers; and most of the advice is a consequence of real problems experienced in the past. Any warnings based solely on theoretical judgment have been avoided; only recommendations based on experience have been included. fib Bulletin 48 focuses on principles only, and therefore does not address detailed design issues, for which local design codes should be applied.
Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 2883940886 Category : Technology & Engineering Languages : en Pages : 97
Book Description
The realization process of civil engineering structures is complicated, involving a wide variety of disciplines, each of which brings a specific contribution. It is a challenge to structure the process so that a balanced, optimized participation of the many disciplines involved is achieved. One of the critical success factors is knowledge management: each discipline should bring professional knowledge, but they should interact at interfaces as well. Temporary structures are an example of this phenomenon: they are right in the middle of a complex system of interactions between structural engineering, site engineering, work preparation, procurement, and execution. They have a significant impact on cost, construction time, construction methodology and the through-life performance of the actual structure. Formwork and falsework are among the most important elements of temporary structures for civil engineering projects. Knowledge management with respect to formwork and falsework requires engineers to share knowledge and experience in the broadest sense, as the actual performance of formwork and falsework can only be evaluated at a late stage in the realization process, when some disciplines are no longer present. The learning circle can therefore only be closed through feedback. fib Bulletin 48 presents an overview of formwork and falsework techniques and addresses issues related to the design and application thereof. Its objective is to bridge the gap often experienced in practice by effectively feeding back state of the art knowledge and experience with regard to formwork and falsework, thus making a larger group of engineers familiar with the important issues related to the design and application of formwork and falsework. It aims to provide both structural and site engineers with information to design and use formwork and falsework in a safe, reliable, and economic way, thus achieving better interaction between the engineering disciplines involved. Bulletin 48 addresses some fundamental issues related to formwork and falsework: The appearance of the finished concrete, which is closely related to the quality of the formwork. The performance of the finished concrete in relation to durability and as part of Life Cycle Management. The need to support the concrete while it acquires enough strength and stiffness to support itself. In this context the most important issue is structural safety. The guidelines given in this document are based on the experience of site and design engineers; and most of the advice is a consequence of real problems experienced in the past. Any warnings based solely on theoretical judgment have been avoided; only recommendations based on experience have been included. fib Bulletin 48 focuses on principles only, and therefore does not address detailed design issues, for which local design codes should be applied.
Author: FIB - Féd. Int. du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941203 Category : Technology & Engineering Languages : en Pages : 145
Book Description
For a large part of the existing buildings and infrastructure the design life has been reached or will be reached in the near future. These structures might need to be reassessed in order to investigate whether the safety requirements are met. Current practice on the assessment of existing concrete structures however needs a thorough evaluation from a risk and reliability point of view, as they are mostly verified using simplified procedures based on the partial factor method commonly applied in design of new structures. Such assessments are often conservative and may lead to expensive upgrades. Although the last decades reliability-based assessment of existing concrete structures has gained wide attention in the research field, a consistent reliability-based assessment framework and a practically applicable codified approach which is compatible with the Eurocodes and accessible for common structural engineering problems in everyday practice is currently missing. Such an approach however allows for a more uniform, more objective and probably more widely applied assessment approach for existing concrete structures. Hence, in this bulletin two different partial factor formats are elaborated, i.e. the Design Value Method (DVM) and the Adjusted Partial Factor Method (APFM), enabling the incorporation of specific reliability related aspects for existing structures. The DVM proposes a fundamental basis for evaluating partial factors whereas the APFM provides adjustment factors to be applied on the partial factors for new structures in EN 1990. In this bulletin both methods are elaborated and evaluated and a basis is provided for decision making regarding the target safety level of existing structures.
Author: FIB - Féd. Int. du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 288394119X Category : Technology & Engineering Languages : en Pages : 497
Book Description
The FRC-2014 Workshop Fibre Reinforced Concrete: from Design to Structural Applications was the first ACI-fib joint technical event. The Workshop, held at Polytechnique Montreal (Canada) on July 24th and 25th 2014, was attended by 116 participants from 25 countries and 4 continents. The first international FRC workshop was held in Bergamo (Italy) in 2004. At that time, the lack of specific building codes and standards was identified as the main inhibitor to the application of this technology in engineering practice. Ten years after Bergamo, many of the objectives identified at that time have been achieved. The use of fibre reinforced concrete (FRC) for designing structural members in bending and shear has recently been addressed in the fib Model Code 2010. Steel fibre reinforced concrete (SFRC) has also been used structurally in several building and bridge projects in Europe and North-America. SFRC has been widely used in segmental tunnel linings all over the world. Members of ACI544 and fib TG-4.1 have been involved in writing code based specifications for the design of FRC structural members. More than fifty papers were presented at the Workshop from which forty-four were selected for this joint ACI/fib publication. The papers are organised in the document under six themes: Design guidelines and specifications, Material properties for design, Behaviour and design of beams and columns, Behaviour and design of slabs and other structures, Behaviour and design of foundations and underground components, and finally, Applications in structure and underground construction projects.
Author: FIB – Féd. Int. du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941181 Category : Technology & Engineering Languages : en Pages : 290
Book Description
This document has a broad scope and is not focussed on design issues. Precast construction under seismic conditions is treated as a whole. The main principles of seismic design of different structural systems, their behavior and their construction techniques are presented through rules, construction steps and sequences, procedures, and details that should lead to precast structures built in seismic areas complying with the fundamental performance requirements of collapse prevention and life safety in major earthquakes and limited damage in more frequent earthquakes. The content of this document is largely limited to conventional precast construction and, although some information is provided on the well-known “PRESSS technology” (jointed ductile dry connections), this latter solution is not treated in detail in this document. The general overview, contained in this document, of alternative structural systems and connection solutions available to achieve desired performance levels, intends to provide engineers, architects, clients, and end-users (in general) with a better appreciation of the wide range of applications that modern precast concrete technology can have in various types of construction from industrial to commercial as well as residential. Lastly, the emphasis on practical aspects, from conceptual design to connection detailing, aims to help engineers to move away from the habit of blindly following prescriptive codes in their design, but instead go back to basic principles, in order to achieve a more robust understanding, and thus control, of the seismic behaviour of the structural system as a whole, as well as of its components and individual connections.
Author: fib Fédération Internationale du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941238 Category : Technology & Engineering Languages : en Pages : 178
Book Description
With the publication of this bulletin, fib Commission 1 is initiating a new series of documents related to the use of structural concrete in underground construction, where structural concrete plays a major and increasingly important role. The usage of underground space is more than ever a key issue of urban planning and fib decided to start addressing the issues related to the design and construction of concrete structures in this particular environment. In this context one the most significant applications of structural concrete is tunnel lining, for which the properties of reinforced concrete are particularly well suited through compressive strength, water tightness, ductility, and durability. Reinforced concrete tunnels linings have mostly been traditionally cast in situ, but the development of Tunnel Boring Machines has lead to the invention of precast concrete segmental lining technology, which is nowadays one of the most promising applications of Fibre Reinforced Concrete (FRC). Thanks to the courage and dedication of innovative designers and contractors, a number of large tunnels have already been built around the World with FRC precast linings, and this report presents the experience acquired with these projects, and also provides guidance about the way to apply 2010 fib Model Code recommendations on FRC to these structures. The main drivers of this evolution from RC to FRC are a better ductility, more durability, and easier fabrication and construction process. As Commission 1 chair, I am very grateful to Alberto Meda and to all members of this task group for opening the way to this new field of underground structures within our commission, and to have efficiently produced a document that will be useful to our members and to the construction community around the World.
Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 2883940975 Category : Technology & Engineering Languages : en Pages : 274
Book Description
fib Bulletin 57 is a collection of contributions from a workshop on "Recent developments on shear and punching shear in RC and FRC elements", held in Salò, Italy, in October 2010. Shear is one of a few areas of research into fundamentals of the behaviour of concrete structures where contention remains amongst researchers. There is a continuing debate between researchers from a structures perspective and those from a materials or fracture mechanics perspective about the mechanisms that enable the force flow through a concrete member and across cracks. In 2009, a Working Group was formed within fib Task Group 4.2 "Ultimate Limit State Models" to harmonise different ideas about design procedures for shear and punching. An important outcome of this work was the ensuing discussions between experts and practitioners regarding the shear and punching provisions of the draft fib Model Code, which led to the organization of the Salò workshop. Invited experts in the field of shear and FRC gave 18 lectures at the workshop that was attended by 72 participants from 12 countries in 3 different continents. The contributions from this conference as compiled in this bulletin are believed to represent the best of the current state of knowledge. They certainly are of general interest to fib members and especially helpful in the finalization of the 2010 fibModel Code. It is hoped that this publication will stimulate further research in the field, to refine and harmonize the available analytical models and tools for shear and punching design.
Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 2883940967 Category : Technology & Engineering Languages : en Pages : 312
Book Description
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.
Author: Beale, Robert Publisher: IGI Global ISBN: 152252200X Category : Technology & Engineering Languages : en Pages : 515
Book Description
Temporary structures are a vital but often overlooked component in the success of any construction project. With the assistance of modern technology, design and operation procedures in this area have undergone significant enhancements in recent years. Design Solutions and Innovations in Temporary Structures is a comprehensive source of academic research on the latest methods, practices, and analyses for effective and safe temporary structures. Including perspectives on numerous relevant topics, such as safety considerations, quality management, and structural analysis, this book is ideally designed for engineers, professionals, academics, researchers, and practitioners actively involved in the construction industry.
Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 2883941084 Category : Technology & Engineering Languages : en Pages : 124
Book Description
In the last ten to fifteen years a vast amount of research has been undertaken to improve on earlier methods for analysing the seismic reliability of structures. These efforts focused on identifying aspects of prominent relevance and disregarding the inessential ones, with the goal of producing methods that are both more efficient and easier to use in practice. Today this goal can be said to be substantially achieved. During these years scientific activity covered all of the many aspects involved in such a multi-disciplinary problem, ranging from seismology, to geotechnics, to structural analysis and economy, all of them to be consistently organised into a probabilistic framework. As the output of this research was dispersed into a multitude of technical papers, fib Commission 7 thought it worthwhile to select the essential aspects of this large body of knowledge and to present them into a coherent and accessible document for structural engineers. To this end a task group of specialists was formed, whose qualifications come from their personal involvement in the above-mentioned developments throughout this period of time. From its inception the group decided that the bulletin should have had a distinct educational character and provide a clear overview of the methods available. The outcome is a compact volume that starts by introducing the concepts and definitions of performance-based engineering, continues with two chapters on assessment and design, respectively, presenting the methods in detail accompanied by illustrative examples, and concludes with an appendix with sample programming excerpts for their implementation. It is believed that at present fib Bulletin 68 represents a unique compendium on probabilistic performance-based seismic design.
Author: fib Fédération internationale du béton Publisher: fib Fédération internationale du béton ISBN: 288394105X Category : Technology & Engineering Languages : en Pages : 357
Book Description
The objectives of MC2010 are to (a) serve as a basis for future codes for concrete structures, and (b) present new developments with regard to concrete structures, structural materials and new ideas in order to achieve optimum behaviour. MC2010 includes the whole life cycle of a concrete structure, from design and construction to conservation (assessment, maintenance, strengthening) and dismantlement, in one code for buildings, bridges and other civil engineering structures. Design is largely based on performance requirements. The chapter on materials is extended with new types of concrete and reinforcement (such as fibres and non-metallic reinforcements). The fib Model Code 2010 also gives corresponding explanations in a separate column of the document. Additionally, MC2010 is supported by background documents that have already been (or will soon be) published in fib bulletins and journal articles. MC2010 is now the most comprehensive code on concrete structures, including their complete life cycle: conceptual design, dimensioning, construction, conservation and dismantlement.
Author: fib Fédération internationale du béton
Author: fib Fédération internationale du béton
Author: FIB - Féd. Int. du Béton
Author: FIB - Féd. Int. du Béton
Author: FIB – Féd. Int. du Béton
Author: fib Fédération Internationale du Béton
Author: fib Fédération internationale du béton
Author: fib Fédération internationale du béton
Author: Beale, Robert
Author: fib Fédération internationale du béton
Author: fib Fédération internationale du béton