Special Design Considerations for Precast Prestressed Hollow Core Floors

Download Special Design Considerations for Precast Prestressed Hollow Core Floors PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 2883940460
Total Pages : 176 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Special Design Considerations for Precast Prestressed Hollow Core Floors by : fib Fédération internationale du béton

Download or read book Special Design Considerations for Precast Prestressed Hollow Core Floors written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2000-01-01 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The former FIP Commission Prefabrication drafted the FIP Recommendations on the design of Precast prestressed hollow core floors, published by FIP in 1988 (Telford, London, ISBN 0-7277-1375-2). That document was highly appreciated by designers and public authorities because of the lack of guidance available elsewhere, especially with respect to some specific features of the product, for example the absence of transverse reinforcement. It has also served as a reference guide for national standards and especially for the CEN product standard on prestressed hollow core slabs. During the production of that report it was felt that some design rules were incomplete or missing. In addition, research carried out since has resulted in complementary knowledge on the behaviour of hollow core floors, for example in combination with slender floor beams. The present guide to good practice is intended to complement the existing recommendations. The research for the different items was carried out at Chalmers University of Technology (Sweden), Politecnico di Torino (Italy), VTT (Finland), University of Nottingham (United Kingdom), Building Research Institute (Poland), and the University of Rome (Italy).

Precast prestressed hollow core floors

Download Precast prestressed hollow core floors PDF Online Free

Author :
Publisher : FIB - International Federation for Structural Concrete
ISBN 13 : 0727713752
Total Pages : 36 pages
Book Rating : 4.7/5 (277 download)

DOWNLOAD NOW!


Book Synopsis Precast prestressed hollow core floors by : FIB – International Federation for Structural Concrete

Download or read book Precast prestressed hollow core floors written by FIB – International Federation for Structural Concrete and published by FIB - International Federation for Structural Concrete. This book was released on 1988-01-01 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: These recommendations, together with a detailed commentary, are the result of nine years' intensive research. They provide the engineer and precaster with a guide to sound design and put at their disposal calculation methods and examples of good practice for the many details of the design of hollow core floors.

PCI Manual for the Design of Hollow Core Slabs

Download PCI Manual for the Design of Hollow Core Slabs PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (319 download)

DOWNLOAD NOW!


Book Synopsis PCI Manual for the Design of Hollow Core Slabs by : Donald R. Buettner

Download or read book PCI Manual for the Design of Hollow Core Slabs written by Donald R. Buettner and published by . This book was released on 1985 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Precast Prestressed Concrete for Building Structures

Download Precast Prestressed Concrete for Building Structures PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 1003836542
Total Pages : 639 pages
Book Rating : 4.0/5 (38 download)

DOWNLOAD NOW!


Book Synopsis Precast Prestressed Concrete for Building Structures by : Kim S. Elliott

Download or read book Precast Prestressed Concrete for Building Structures written by Kim S. Elliott and published by CRC Press. This book was released on 2024-03-21 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide to precast prestressed concrete (PSC) introduces and applies principles for the design of PSC slabs, thermal slabs, beam and block flooring and main beams, including (where appropriate) cantilevers, and composite and continuous construction. The book provides numerous worked examples for a wide range of PSC elements and covers the innovative use of PSC on several projects in the UK over the past ten years, drawing on the authors' first-hand experience in the design and manufacture of special products. The contents are in line with latest revisions of the Eurocodes and European Product Standards. Precast Prestressed Concrete for Building Structures is ideal for consulting structural engineers, clients, PSC manufacturers, and advanced undergraduate and graduate students, both as a guide and a textbook.

Building for the Future: Durable, Sustainable, Resilient

Download Building for the Future: Durable, Sustainable, Resilient PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 3031325117
Total Pages : 1808 pages
Book Rating : 4.0/5 (313 download)

DOWNLOAD NOW!


Book Synopsis Building for the Future: Durable, Sustainable, Resilient by : Alper Ilki

Download or read book Building for the Future: Durable, Sustainable, Resilient written by Alper Ilki and published by Springer Nature. This book was released on 2023-07-04 with total page 1808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the fib Symposium “Building for the future: Durable, Sustainable, Resilient”, held in Istanbul, Turkey, on 5–7 June 2023. The book covers topics such as concrete and innovative materials, structural performance and design, construction methods and management, and outstanding structures. fib (The International Federation for Structural Concrete) is a not-for-profit association whose mission is to develop at an international level the study of scientific and practical matters capable of advancing the technical, economic, aesthetic, and environmental performance of concrete construction.

Planning and design handbook on precast building structures

Download Planning and design handbook on precast building structures PDF Online Free

Author :
Publisher : FIB - Féd. Int. du Béton
ISBN 13 : 2883941149
Total Pages : 325 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Planning and design handbook on precast building structures by : FIB - Féd. Int. du Béton

Download or read book Planning and design handbook on precast building structures written by FIB - Féd. Int. du Béton and published by FIB - Féd. Int. du Béton. This book was released on 2014 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1994 fib Commission 6: Prefabrication edited a successful Planning and Design Handbook that ran to approximately 45,000 copies and was published in Spanish and German. Nearly 20 years later Bulletin 74 brings that first publication up to date. It offers a synthesis of the latest structural design knowledge about precast building structures against the background of 21st century technological innovations in materials, production and construction. With it, we hope to help architects and engineers achieve a full understanding of precast concrete building structures, the possibilities they offer and their specific design philosophy. It was principally written for non-seismic structures. The handbook contains eleven chapters, each dealing with a specific aspect of precast building structures. The first chapter of the handbook highlights best practice opportunities that will enable architects, design engineers and contractors to work together towards finding efficient solutions, which is something unique to precast concrete buildings. The second chapter offers basic design recommendations that take into account the possibilities, restrictions and advantages of precast concrete, along with its detailing, manufacture, transport, erection and serviceability stages. Chapter three describes the precast solutions for the most common types of buildings such as offices, sports stadiums, residential buildings, hotels, industrial warehouses and car parks. Different application possibilities are explored to teach us which types of precast units are commonly used in all those situations. Chapter four covers the basic design principles and systems related to stability. Precast concrete structures should be designed according to a specific stability concept, unlike cast in-situ structures. Chapter five discusses structural connections. Chapters six to nine address the four most commonly used systems or subsystems of precast concrete in buildings, namely, portal and skeletal structures, wall-frame structures, floor and roof structures and architectural concrete facades. In chapter ten the design and detailing of a number of specific construction details in precast elements are discussed, for example, supports, corbels, openings and cutouts in the units, special features related to the detailing of the reinforcement, and so forth. Chapter eleven gives guidelines for the fire design of precast concrete structures. The handbook concludes with a list of references to good literature on precast concrete construction.

Precast Prestressed Hollow Core Floors

Download Precast Prestressed Hollow Core Floors PDF Online Free

Author :
Publisher :
ISBN 13 : 9780727748706
Total Pages : 46 pages
Book Rating : 4.7/5 (487 download)

DOWNLOAD NOW!


Book Synopsis Precast Prestressed Hollow Core Floors by :

Download or read book Precast Prestressed Hollow Core Floors written by and published by . This book was released on 1988 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Structural Connections for Precast Concrete Buildings

Download Structural Connections for Precast Concrete Buildings PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 2883940835
Total Pages : 369 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Structural Connections for Precast Concrete Buildings by : fib Fédération internationale du béton

Download or read book Structural Connections for Precast Concrete Buildings written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2008-01-01 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Connections are among the most essential parts in precast structures. Their performance relates to the structural limit states, as well as to manufacture of the precast elements and erection and maintenance of the structure itself. Proper design of connections is one major key to a successful prefabrication. The principal aim of fib Bulletin 43 is to encourage good practice in the design of structural connections in precast concrete structures. This is achieved through a good understanding of structural connections as parts of the overall structural system and of basic force transferring mechanisms. The bulletin consists of two parts; the first part concerns general considerations and philosophy in the design of structural connections, and the second part deals with basic force transferring mechanisms within structural connections. The main focus is on the design of structural connections with regard to their structural function in ordinary design situations in the serviceability and ultimate limit states, and in accidental/abnormal design situations, like fire, lack of fit and impact/accidental loads. Other aspects considered include production, handling and site erection of elements, building physics, durability and maintenance. Bulletin 43 applies to structural connections for precast concrete buildings, although the information on basic force transfer mechanisms can also be applicable to other types of prefabricated structures.

Precast Concrete in Mixed Construction

Download Precast Concrete in Mixed Construction PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 9782883940598
Total Pages : 72 pages
Book Rating : 4.9/5 (45 download)

DOWNLOAD NOW!


Book Synopsis Precast Concrete in Mixed Construction by : fib Fédération internationale du béton

Download or read book Precast Concrete in Mixed Construction written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2002-01-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this publication is to show how precast concrete may be mixed in combination with other structural materials to maximise overall building performance. The other materials are: cast insitu concrete, reinforced and post-tensioned, structural steelwork, timber and glue-laminated timber, masonry in brickwork and blockwork, glass and glazing. The aim is to provide a companion volume to composite Floor Structures [FIP, 1998] and to show some of the many other ways that precast concrete can be used to advantage with other materials. The term mixed precast construction is used to describe these other combinations. The intention is not to discuss design calculations - that is for a future 'fib Guide to good practice'. Instead, the bulletin is meant as a 'State-of-art' publication showing photographs, sketches and details of precast concrete with other materials. There are no design equations, although some technical information on how to combine the materials, e.g. bearings, connections, tolerances, thermal and shrinkage effects, etc., is included if appropriate. Thus, the document focuses on the use of mixed construction in multistorey buildings, offices, housing, grandstands, parking garages, and industrial warehouses, etc. i. e. on precast concrete as the main construction material and looks at the manner in which other materials can be integrated. Chapter by chapter the strengths and weakness of each material studied are assessed as part of the total building design. In some cases it is obvious that the load carrying performance of one material outweighs another. In other cases aspects such as thermal, fire, vibration, fatigue, creep, acoustic, seismic and visual characteristics, and the geographical local availability of that material, may be critical. A world-wide survey, presented in Table 1.1, found that precast concrete is a universal building material, but mixed construction is limited mostly to developed countries where structural steelwork and types of timber, such as glue-laminated timber, is readily available. In addition there may be design, detailing, production, transportation, erection and maintenance limitations, which do or do not favour mixed construction.

PRO 21: International RILEM Symposium on Connections Between Steel and Concrete (Set)

Download PRO 21: International RILEM Symposium on Connections Between Steel and Concrete (Set) PDF Online Free

Author :
Publisher : RILEM Publications
ISBN 13 : 9782912143259
Total Pages : 736 pages
Book Rating : 4.1/5 (432 download)

DOWNLOAD NOW!


Book Synopsis PRO 21: International RILEM Symposium on Connections Between Steel and Concrete (Set) by : Rolf Eligehausen

Download or read book PRO 21: International RILEM Symposium on Connections Between Steel and Concrete (Set) written by Rolf Eligehausen and published by RILEM Publications. This book was released on 2001 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Concrete Floors and Slabs

Download Concrete Floors and Slabs PDF Online Free

Author :
Publisher : Thomas Telford
ISBN 13 : 9780727731760
Total Pages : 396 pages
Book Rating : 4.7/5 (317 download)

DOWNLOAD NOW!


Book Synopsis Concrete Floors and Slabs by : Ravindra K. Dhir

Download or read book Concrete Floors and Slabs written by Ravindra K. Dhir and published by Thomas Telford. This book was released on 2002 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is a global material that underwrites commercial wellbeing and social development. There is no substitute that can be used on the same engineering scale and its sustainability, expolitation and further development are imperatives to creating and maintaing a healthy economy and environment worldwide. The pressure for change and improvement of performance is relentless and necessary. Concrete must keep evolving to satisfy the increasing demands of all its users.

Precast Concrete Railway Track Systems

Download Precast Concrete Railway Track Systems PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 9782883940772
Total Pages : 44 pages
Book Rating : 4.9/5 (47 download)

DOWNLOAD NOW!


Book Synopsis Precast Concrete Railway Track Systems by : fib Fédération internationale du béton

Download or read book Precast Concrete Railway Track Systems written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2006-01-01 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1986, the FIP Commission on Prefabrication issued the state-of-art report "Concrete Railway Sleepers", which included design considerations, manufacturing methods, rail fastening systems and field performance. During the two decades since that report, precast concrete has gained importance in the field of railway track systems for plain track, switches and crossings, tunnels and other applications. Developments in production methods for concrete sleepers in switch and crossing layouts to cope with the complex geometry and the industry's confidence in their performance have contributed to the huge increase in the use of this type of sleeper. The use of slab track for high-speed track has also grown, particularly where either new track is built or where existing track is renewed and long periods of track possession are possible. There has also been progress in the development of plant and equipment for the installation, renewal and maintenance of concrete sleepered track. With machines now able to replace existing track at a rate of 5000 sleepers (over 3 km track) per day, choosing concrete sleepers can reduce the time on site, meaning tracks can be reopened quickly whilst reducing labour requirements and costs. Today, precast concrete is considered to be the best performing and preferred material for railway sleepers, due to the following factors: long-term durability; improved geometric retention of track and greater weight vital for high-speed and heavy freight lines; improved elasticity of track; improved ride quality; low first cost; minimum life cycle cost; low cost of maintenance; environmental friendliness - no chemical treatment required and can be recycled. As all aspects of precast concrete railway track systems, from design through manufacture to installation and maintenance, have progressed since the publication of the FIP report, an update was considered timely, in order to provide a synthesis of currently available information. This new edition covers quality, design, production, durability, maintenance and environmental considerations, and includes survey on the use of precast concrete track systems in over 30 countries.

Precast-concrete buildings in seismic areas

Download Precast-concrete buildings in seismic areas PDF Online Free

Author :
Publisher : FIB - Féd. Int. du Béton
ISBN 13 : 2883941181
Total Pages : 290 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Precast-concrete buildings in seismic areas by : FIB – Féd. Int. du Béton

Download or read book Precast-concrete buildings in seismic areas written by FIB – Féd. Int. du Béton and published by FIB - Féd. Int. du Béton. This book was released on 2016 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Precast Concrete Bridges

Download Precast Concrete Bridges PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 288394069X
Total Pages : 88 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Precast Concrete Bridges by : fib Fédération internationale du béton

Download or read book Precast Concrete Bridges written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2004-01-01 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report was drafted by fib Task Group 6.4, Precast bridges: José Calavera (Convenor, Spain) André De Chefdebien (CERIB, France), David Fernández-Ordóñez (Prefabricados Castelo, S.A., Spain, Secretary), Antonello Gasperi (Consulting engineer, Italy), Jorge Ley (INTEMAC, Spain), Fritz Mönnig (Prof. Bechert & Partner, Germany), Pierre Passeman (CERIB, France), C. Quartel (Spanbeton BV, The Netherlands), Ladislav Sasek (VPU DECO Praha, Czech Republic), George Tootell (Buchan Concrete Ltd., UK), Arnold Van Acker (Belgium)

Acceptance of Stay Cable Systems Using Prestressing Steels

Download Acceptance of Stay Cable Systems Using Prestressing Steels PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 9782883940703
Total Pages : 98 pages
Book Rating : 4.9/5 (47 download)

DOWNLOAD NOW!


Book Synopsis Acceptance of Stay Cable Systems Using Prestressing Steels by : fib Fédération internationale du béton

Download or read book Acceptance of Stay Cable Systems Using Prestressing Steels written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2005-01-01 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fib Recommendation gives technical guidelines regarding design, testing, acceptance, installation, qualification, inspection and maintenance of stay cable systems using prestressing steels (strands, wires or bars) as tensile elements, which can be applied internationally. This Recommendation is applicable for cable-stayed bridges and other suspended structures such as roofs. It may also be used for hangers in arch structures and as suspension cables, as appropriate. This Recommendations has been formulated by an international working group comprising more than 20 experts from administrative authorities, universities, laboratories, owners, structural designers, suppliers of prestressing steels and stay cable suppliers. The text has been written to cover best construction practices around the world, and to provide material specifications that are considered to be the most advanced available at the time of preparing this text. For ease of use (for client, designer and cable supplier), the complex content has been arranged thematically according to the system components into chapters focusing on performance characteristics, requirements and acceptance criteria. Requirements and comments have been specified for all parties involved in design and construction in order to aim for a uniform and high quality and durability. The interfaces to the structural designer are highlighted. The essential subjects are: Design and detailing of stay cables including saddles and damping devices Durability requirements and corrosion protection systems Requirements for the materials Testing requirements for the stay cables Installation, tolerances, qualification of companies and personnel Inspection, maintenance and repair. This Recommendation does not cover the technology of stay cables whose tensile elements are ropes, locked-coil cables, etc. or which consist of composite materials. Nevertheless, in many cases the specified performance criteria may also be applicable to these systems, although numerical values given for the acceptance criteria may need to be adjusted. For these systems it has been difficult to provide multiple protective layers similar to those specified for stay cables made from prestressing steel and therefore, the quality of corrosion protection may not be equivalent. While extradosed cables have similarities with stay cables, generally agreed design and system acceptance criteria are not yet available and therefore, this type of cable is not covered.

Constitutive Modelling of High Strength/high Performance Concrete

Download Constitutive Modelling of High Strength/high Performance Concrete PDF Online Free

Author :
Publisher : fib Fédération internationale du béton
ISBN 13 : 2883940827
Total Pages : 134 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Constitutive Modelling of High Strength/high Performance Concrete by : fib Fédération internationale du béton

Download or read book Constitutive Modelling of High Strength/high Performance Concrete written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2008-01-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Strength/High Performance Concrete (HSC/HPC) continues to be the object of particular interest and extensive research, and its use in construction is increasing continuously. fib Bulletin 42 summarises the available information on the material behaviour of HSC/HPC, and develops a set of code-type constitutive relations as an extension of CEB-FIP Model Code 1990. Literature on experimental data and international guidelines, standards and recommendations were reviewed, and already-existing constitutive relations and models were evaluated. In addition to a number of material laws chosen and adjusted for this report, some new constitutive relations were developed based on the collected data. The criteria for the choice of the existing relations as well as the development of the new constitutive relations involved their simplicity and operationality (code-type mathematical formulations). Furthermore, they had to be physically sound and if possible describe the behaviour of both high-performance and normal strength concretes by a unique relation. Finally, compliance with the specifications given in the CEB-FIP Model Code 1990 was examined. This State-of-art report is intended for engineers and represents a summary of the relevant knowledge available to and possessed by the members of the Task Group at the time of its drafting.

Punching shear of structural concrete slabs

Download Punching shear of structural concrete slabs PDF Online Free

Author :
Publisher : FIB - Féd. Int. du Béton
ISBN 13 : 2883941211
Total Pages : 396 pages
Book Rating : 4.8/5 (839 download)

DOWNLOAD NOW!


Book Synopsis Punching shear of structural concrete slabs by : FIB - Féd. Int. du Béton

Download or read book Punching shear of structural concrete slabs written by FIB - Féd. Int. du Béton and published by FIB - Féd. Int. du Béton. This book was released on 2017 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: fib Bulletin 81 reports the latest information available to researchers and practitioners on the analysis, design and experimental evidence of punching shear of structural concrete slabs. It follows previous efforts by the International Federation for Structural Concrete (fib) and its predecessor the Euro-International Committee for Concrete (CEB), through CEB Bulletin 168, Punching Shear in Reinforced Concrete (1985) and fibBulletin 12, Punching of structural concrete slabs (2001), and an international symposium sponsored by the punching shear subcommittee of ACI Committee 445 (Shear and Torsion) and held in Kansas City, Mo., USA, in 2005. This bulletin contains 18 papers that were presented in three sessions as part of an international symposium held in Philadelphia, Pa., USA, on October 25, 2016. The symposium was co-organized by the punching shear sub-committee of ACI 445 and by fib Working Party 2.2.3 (Punching and Shear in Slabs) with the objectives of not only disseminating information on this important design subject but also promoting harmonization among the various design theories and treatment of key aspects of punching shear design. The papers are organized in the same order they were presented in the symposium. The symposium honored Professor Emeritus Neil M. Hawkins (University of Illinois at Urbana-Champaign, USA), whose contributions through the years in the field of punching shear of structural concrete slabs have been paramount. The papers cover key aspects related to punching shear of structural concrete slabs under different loading conditions, the study of size effect on punching capacity of slabs, the effect of slab reinforcement ratio on the response and failure mode of slabs, without and with shear reinforcement, and its implications for the design and formulation in codes of practice, an examination of different analytical tools to predict the punching shear response of slabs, the study of the post-punching response of concrete slabs, the evaluation of design provisions in modern codes based on recent experimental evidence and new punching shear theories, and an overview of the combined efforts undertaken jointly by ACI 445 and fib WP 2.2.3 to generate test result databanks for the evaluation and calibration of punching shear design recommendations in North American and international codes of practice.