Prefabrication plays an important role in the construction of concrete structures worldwide and is evolving continuously to cope with current society’s habits and needs related to housing, commercial buildings and civil engineering works. In fact, industrialised construction may result in cost efficiency, good quality and environmentally friendly solutions, as well as the ability to adapt to market demands.
Scope and objective of technical work
The basic goal of COM6 is to enhance the progress of precast concrete, in relation to the state-of-the-art. The general scope is to promote the understanding of design concepts, technology and use of precast concrete, not only by the specialists but also by a broader audience. The implied objectives are:
- to stimulate and coordinate R&D internationally;
- to transfer the output into planning, practical design and construction, by means of technical reports, state–of-the-art reports, guides to good practice, handbooks;
- to disseminate knowledge through seminars, courses, educational material;
- to contribute to recommendations, pre-normative documents and codes within standardisation bodies.
COM6 addresses subjects that include items directly related to precast concrete, such as systems, elements, connections, production, handling, assembling, demounting, etc., as well as indirectly related items such as structural analysis, materials technology, building physics, equipment, environmental issues, sustainable development, terminology.
|First name||Last name||Country||Affiliation|
|Doniak||Iria Licia Oliva||Brazil||ABCIC|
|Sennour||Larbi||United States||The Consulting Engineers Gr., Inc.|
|Della Bella||Bruno||Italy||Gruppo Centro Nord|
|Riva||Paolo||Italy||University of Bergamo|
|van der Zee||Pieter||Belgium||Ergon Belgium|
|Kourajian||Paul||United States||Molin Concrete Products Co.|
|Elliott||Kim||United Kingdom||Precast Consultant|
|Ozden||Sevket||Turkey||OTS INSAAT Engineering & Design Co.|
|Falger||Micha||Netherlands||BAM Advies & Engineering|
|Vambersky||N.||Netherlands||Corsmit Raadgevend Ingenieurs|
|Sasek||Ladislav||Czech Republic||Mott MacDonald Praha s.r.o.|
|Skjelle||Arne||Norway||Construction Products Association|
|Newby||Michael||New Zealand||Holmes Consulting Group|
|Klein-Holte||Ronald||Netherlands||VBI Ontwikkeling BV|
|Derkowski||Wit||Poland||Cracow Technical University|
|de Chefdebien||André||France||LB7/Lesage Group|
|Saha||Sthaladipti||India||Larsen & Toubro Ltd|
|Rajala||Lasse||Finland||Sweco Rakennetekniikka Oy|
|Cleland||Ned||United States||Blue Ridge Design|
|Krohn||Jason||United States||PCI - Precast/Prestressed Concrete Institute|
|Chastre Rodrigues||Carlos||Portugal||Universidade Nova de Lisboa|
|Crisp||Barry||Australia||Crisp Consultants PTY Ltd|
|Pampanin||Stefano||New Zealand||University of Canterbury|
|Seshappa||Venkatesh||United States||Gate Precast Company|
|Ghosh||Salyendra||United States||S.K. Ghosh Associates, Inc.|
|de la Fuente Antequera||Albert||Spain||Universidad Polytecnica de Catalunya|
|Frank||Dean A.||United States||Dean Frank Associates, LLC|
|Tsoukantas||Spyros||India||Katerra India Pvt. Ltd|
|El Debs||Mounir||Brazil||Univ. Sao Paulo at Sao Carlos|
|Cholewicki||Andrzej||Poland||Building Research Institute (ITB)|
|Kanappan||Subbaiya||India||Larsen & Toubro Ltd|
|Ferreira||Marcelo||Brazil||UFSCAR Federal University of Sao Carlos|
|Da Guia Lucio||Válter||Portugal||Universidade Nova de Lisboa|
- TG6.1 - Prestressed hollow core floors
- TG6.2 - Quality control for precast concrete
- TG6.3 - Sustainability of structures with precast elements
- TG6.4 - Precast concrete towers for wind power generators
- TG6.5 - Precast concrete bridges
- TG6.6 - Retrofitting of precast seismic structures
- TG6.7 - Precast concrete in tall buildings
- TG6.8 - Terminology for precast concrete
- TG6.9 - Precast parking structures
TG6.1 - Prestressed hollow core floors
During the last decade, the prestressed hollow core slab itself, the use of the HC slab, the functions of the HC floor and the knowledge on the performances of prestressed hollow core floors in various applications have evolved a great deal, which justifies a complete revision of the design recommendations.
The objective of TG6.1 is to revise the design recommendations for precast pre-stressed hollow core floors according to today’s state of the art.
New subjects will be added to the recommendations, based on practical needs of the stakeholders and experiences gained in several projects in which members of the task group were involved.
First name Last name Country Affiliation Doniak Iria Licia Oliva Brazil ABCIC Della Bella Bruno Italy Gruppo Centro Nord van der Zee Pieter Belgium Ergon Belgium Maas Stef Belgium FEBE Marcaccioli Luciano Italy Officine Piccini SpA Kourajian Paul United States Molin Concrete Products Co. Huitric François France CERIB Scalliet Matthieu France CERIB Millen Eduardo Brazil ZMC Consultores Elliott Kim United Kingdom Precast Consultant Lindström Gösta Sweden AB Strangbetong Klein-Holte Ronald Netherlands VBI Ontwikkeling BV Derkowski Wit Poland Cracow Technical University Rajala Lasse Finland Sweco Rakennetekniikka Oy Crisp Barry Australia Crisp Consultants PTY Ltd Hughes Simon Australia - Korander Olli Finland - Fernández-Ordóñez David Switzerland fib Tsoukantas Spyros India Katerra India Pvt. Ltd Cholewicki Andrzej Poland Building Research Institute (ITB) Bronin Sergey Russian Federation PATRIOT-Engineering Ferreira Marcelo Brazil UFSCAR Federal University of Sao Carlos
TG6.2 - Quality control for precast concrete
The goal of Task Group 6.2 (TG6.2) is to prepare a state-of-the-art report describing the steps, procedures and rules for the quality control of precast concrete, with respect to both production and product quality, to improve the quality of prefabricated construction.
The report produced is intended to serve as a basic specification guide for plants and produced precast concrete elements, defining a program of quality control to monitor the production by measurement or by comparison to acceptable standards. The following topics will be included:
- plant quality assurance program;
- material and accessories;
- transport and erection;
- recommended testing equipment;
- quality control operations;
First name Last name Country Affiliation Doniak Iria Licia Oliva Brazil ABCIC Fernández-Ordóñez David Switzerland fib Della Bella Bruno Italy Gruppo Centro Nord Maas Stef Belgium FEBE Fernández Gomez Jaime Spain Intemac Lopez-Agüi Juan Carlos Spain IECA Lopez-Vidal Alejandro Spain ANDECE Karutz Holger Germany ad-media GmbH Frank Dean A. United States Dean Frank Associates, LLC
TG6.3 - Sustainability of structures with precast elements
Sustainability is considered a main aspect for the future of construction therefore for prefabrication as well. COM6 and PCI have had a close cooperation since 2008 on issues of mutual interest, with the comparison of respective approaches and the development of common publications. PCI has produced various works dealing with sustainability of precast structures and is currently developing a large investigation program on this subject. The fib has also developed a large amount of work on sustainability. Presently, the work regarding sustainability is being developed in COM7.
The first activity of TG6.3 will be the study of the most recent work developed on sustainability and in particular Life Cycle Assessment regarding structures where precast concrete elements are used. The elements developed by PCI and the fib as well as by other organisations will be shared.
The final objective will be the drafting of recommendations regarding the study and assessment of precast concrete elements and structures, with respect to sustainability. They will cover all aspects regarding this kind of structures, from planning, design, execution, use, maintenance and remedial activities, up to dismantling, reuse and recycling.
First name Last name Country Affiliation Doniak Iria Licia Oliva Brazil ABCIC Fernández-Ordóñez David Switzerland fib Maas Stef Belgium FEBE Lopez-Vidal Alejandro Spain ANDECE Lorenz Emily United States PCI Nieminen Jyri Finland Sweco Finland Aguado de Cea Antonio Spain Universitat Politecnica de Catalunya Menegotto Marco Italy - Pampanin Stefano New Zealand University of Canterbury Zhao Bin China Tongji University Sakai Koji Japan Japan Sustainability Institute Plauska Tomas Netherlands Consolis Plauska Tomas Netherlands Consolis Do Lago Helene Paulo Brazil PhD Engenharia e Consultoria Hajek Petr Czech Republic Czech Technical University in Prague de la Fuente Antequera Albert Spain Universidad Polytecnica de Catalunya Gálvez Ruiz Jaime Spain Universidad Politecnica de Madrid Frank Dean A. United States Dean Frank Associates, LLC Gasperi Antonello Italy -
TG6.4 - Precast concrete towers for wind power generators
Wind energy production is a growing industry. The energy produced is renewable and environmentally cleaner than most production means.
Supports for the wind energy generators may be built with precast concrete elements, which can be a competitive solution compared to other structural systems.
The evolution of technology for wind energy production shows a clear need for larger wind turbines and, consequently, taller towers. Experience also shows that precast solutions are even more competitive with higher towers.
Offshore wind farms have some advantages over onshore wind farms, which explain recent investments in the area. In this case, the durability of concrete in the marine environment, compared to steel gives greater advantage to precast concrete solutions.
TG6.4 will produce a state-of-the-art report analysing and discussing the main issues related to conception, design, detailing, construction and environmental aspects of precast structural solutions.
First name Last name Country Affiliation Brughuis F.J. Netherlands MECAL BV Batista Paulo United Kingdom Abbey Pynford Tricklebank Alan United Kingdom Consulting Carlos Lancha Fernandez Juan Spain PACADAR SA Ríos Frutos Carlos Spain CALTER Ingenieria Alvarez Cabal Ramon Spain INTEMAC Grünberg Jürgen Germany University Hannover Becker Roger United States PCI Precast/Prestressed Concrete Inst. Abd el Malik Shehata Ibrahim Brazil COPPE/UFRJ Jones George Ireland CDC Ltd Chastre Rodrigues Carlos Portugal Universidade Nova de Lisboa van Keulen D.C. Netherlands Ingenieursstudio DCK Fernández-Ordóñez David Switzerland fib Haugerud Stein Atle Norway Dr. techn. Olav Olsen a.s. de la Fuente Antequera Albert Spain Universidad Polytecnica de Catalunya Arroyo Portero Juan Carlos Spain Calter Ingenieria Sl. Kuchma Daniel United States University of Illinois Almeida Romao Portugal VSL Sistemas
TG6.5 - Precast concrete bridges
Precast concrete bridges are frequently used in almost every country. Nevertheless, while it would ppear that similar practices are generally followed, the reality is that different places and cultures follow different traditions and conventions.
The group will connect the work of both PCI and fib. PCI has developed a large amount of information and publications on precast bridges.
The group will also connect the work of both Commission 1 “Concrete Structures” and Commission 6 “Prefabrication”. Both Commissions have been working on the subject of bridges, Commission 1 has an active task group on bridges and has recently published Bulletin 32 “Guidelines for the design of footbridges”. On the other hand, Commission 6 has published a state-of-the-art report regarding precast bridges, Bulletin 23 “Precast Concrete Bridges”.
First name Last name Country Affiliation Kalny Milan Czech Republic Pontex s.r.o. Prague Fernández-Ordóñez David Switzerland fib van der Zee Pieter Belgium Ergon Belgium Kata Kenichi Japan Sumitomo Mitsui Consctruction Co, Ltd. Briseghella Bruno Italy - SIM Jong Sung Korea, Republic of Hanyang University Han Manyop Korea, Republic of KCI (Korean Concrete Institute) Ariñez Fernandez Freddy Spain Universidad Politécnica de Madrid Garcia Gonzalez Mario Spain GRUPO PACADAR Matute Rubio Luis Spain IDEAM S.A. Petrangeli Mario Italy Mario Petrangeli & Associati Figueiredo Helder Spain IDEAM SA Salim Stephen United Kingdom Peter Brett Associates LLP Wheatly Robert United Kingdom Atkins Park Sung-Yong Korea, Republic of KICT VOO Yen Lei Malaysia Dura Technology Sdn. Bhd Baochun Chen China Fuzhou University El-Ashri Sameh United Arab Emirates e.Construct Garg Pankaj India Atkins Lundrof Nielsen Lars Denmark COWI Pogrbniak Ruslan Russian Federation Slavutich Nickas William United States PCI de Chefdebien André France LB7/Lesage Group Palermo Alessandro New Zealand The University of Canterbury Srinivasan Gopal United Kingdom Arup de la Fuente Antequera Albert Spain Universidad Polytecnica de Catalunya Stucchi Fernando Rebouças Brazil ABECE/EGT El-Badry Mamdouh Canada University of Calgary Corres Peiretti Hugo Spain FHECOR Ingenieros Consultores Waimberg Marcelo Brazil EGT Engenharia Tadros Maher United States University of Nebraska-Lincoln Chan Yin-Wen Taiwan, Province of China National Taiwan University Freitas Jeovan Norway Private
TG6.6 - Retrofitting of precast seismic structures
Topics to be covered within the bulletin could be:
- lessons learned and damage observation or better damage mechanisms observed in previous earthquake and associated performance of precast buildings;
- list of typical critical or less critical vulnerabilities of this class of buildings;
- simplified assessment methodology based on different levels of complexity, from quick screening (pre- or post-damage) without drawings to quick evaluation with drawings, to more detailed analysis and ultimately numerical analysis (computer based);
- overarching retrofit strategies (e.g. drift control or local ductility, thus implying a combination of global vs. local intervention);
- scenario/flowcharts of possible techniques (presented only conceptually but with practical aspects) to fulfil/achieve the targeted retrofitted performance;
- high-level (schematic) discussion of pros and cons of each retrofit solution including cost, invasiveness, downtime and other indirect but important parameters for the owner, tenants, insurer etc.
First name Last name Country Affiliation Fernández-Ordóñez David Switzerland fib Sennour Larbi United States The Consulting Engineers Gr., Inc. Kremmyda Georgia Greece NTUA Psycharis Ioannis Greece NTUA Nat. Technical University of Athens Ozden Sevket Turkey OTS INSAAT Engineering & Design Co. Hajirasouliha Iman United Kingdom The University of Sheffield Lampropoulos Andreas United Kingdom University of Brighton Topintzis Tryfon India Katerra India Pvt. Ltd Savoia Marco Italy University of Bologna Menegotto Marco Italy - Derkowski Wit Poland Cracow Technical University Crisp Barry Australia Crisp Consultants PTY Ltd Pampanin Stefano New Zealand University of Canterbury Zhao Bin China Tongji University Akpinar Erkan Turkey Kocaeli University Ghosh Salyendra United States S.K. Ghosh Associates, Inc. Tsoukantas Spyros India Katerra India Pvt. Ltd D’Arcy Thomas United States Private Nishiyama Minehiro Japan Kyoto University Cleland Ned United States Blue Ridge Design Riva Paolo Italy University of Bergamo di Prisco Marco Italy Politecnico di Milano
TG6.7 - Precast concrete in tall buildings
There has been considerable growth in the construction of tall buildings throughout the world over recent years. The variation in use of such buildings is remarkable, from the most highly specified hotels and apartments to social housing. Tall buildings use many materials to form their framework and shell, and generally mix those materials to deliver the building specified by the client. Precast concrete has been used by architects and engineers to good effect, from whole frameworks to façades, and elements mixed with structural steelwork and cast-in-place concrete. Task Group 6.7 (TG6.7) will develop a state-of-the-art bulletin that will show how precast concrete can be effectively integrated into tall buildings using modern materials and techniques, drawing on the experience and expertise that is currently available in the global concrete industry.
First name Last name Country Affiliation Doniak Iria Licia Oliva Brazil ABCIC Fernández-Ordóñez David Switzerland fib Kasuga Akio Japan Sumitomo Mitsui Construction Co.Ltd. Gasperi Antonello Italy - van der Zee Pieter Belgium Ergon Belgium Burridge Jenny United Kingdom The Concrete Centre Pitt Neil United Kingdom Explore Manufacturing Elliott Kim United Kingdom Precast Consultant Topintzis Tryfon India Katerra India Pvt. Ltd Savoia Marco Italy University of Bologna Stehle John United Kingdom Laing O’Rourke Falger Micha Netherlands BAM Advies & Engineering Graziano Francisco Brazil Pasqua & Graziano Vambersky N. Netherlands Corsmit Raadgevend Ingenieurs Menegotto Marco Italy - Truby Andrew United Kingdom Truby Stevenson Ltd Derkowski Wit Poland Cracow Technical University de Chefdebien André France LB7/Lesage Group Saha Sthaladipti India Larsen & Toubro Ltd Rajala Lasse Finland Sweco Rakennetekniikka Oy Jones George Ireland CDC Ltd Cleland Ned United States Blue Ridge Design Krohn Jason United States PCI - Precast/Prestressed Concrete Institute Chastre Rodrigues Carlos Portugal Universidade Nova de Lisboa van Keulen D.C. Netherlands Ingenieursstudio DCK Hughes Simon Australia - Pampanin Stefano New Zealand University of Canterbury Zhao Bin China Tongji University Seshappa Venkatesh United States Gate Precast Company Ghosh Salyendra United States S.K. Ghosh Associates, Inc. Corres Peiretti Hugo Spain FHECOR Ingenieros Consultores Tsoukantas Spyros India Katerra India Pvt. Ltd D’Arcy Thomas United States Private Cholewicki Andrzej Poland Building Research Institute (ITB) Crisp Barry Australia Crisp Consultants PTY Ltd Kelly Simon Ireland Creagh Concrete Minson Andrew United Kingdom MPA - Mineral Products Association Ferreira Marcelo Brazil UFSCAR Federal University of Sao Carlos Da Guia Lucio Válter Portugal Universidade Nova de Lisboa
TG6.8 - Terminology for precast concrete
In fib bulletins, the terminology and language used was not uniformly understood by experts from various countries throughout the world.
The objective is to create a technical report that lists the common terminology used in the prefabrication industry along with an explanation describing the terms. There may be multiple terms used with the same definition.
First name Last name Country Affiliation Lindström Gösta Sweden AB Strangbetong Vambersky N. Netherlands Corsmit Raadgevend Ingenieurs Karutz Holger Germany ad-media GmbH Krohn Jason United States PCI - Precast/Prestressed Concrete Institute Crisp Barry Australia Crisp Consultants PTY Ltd Hughes Simon Australia - Fernández-Ordóñez David Switzerland fib Chastre Rodrigues Carlos Portugal Universidade Nova de Lisboa Gasperi Antonello Italy - Frank Dean A. United States Dean Frank Associates, LLC Jones George Ireland CDC Ltd Menegotto Marco Italy - Walraven Joost Netherlands Delft University of Technology
TG6.9 - Precast parking structures
Besides the traffic congestion, one of the most prevalent problems in large urban agglomerations where cars are the dominant mode of transportation, vehicles spend most of the time parked. Particularly in the central areas both challenges are interrelated, since looking for parking spaces, causes congestion in circulation.
Precast concrete is generally used in the constructions of structures and buildings facilitating urban mobility (e.g. airports, stations, bridges, etc.). Precast concrete offers important advantages: large spans by using prestressed elements, speed of erection, low environmental impact, low maintenance costs and many more.
Despite the fact this bulletin mentions the advantages of precast concrete in parking garages several times, there is a clear need to inspire designers and architects with more examples and best practices from all over the world, considering new local needs.
This report should encourage architects and designers to use precast (prestressed) concrete for car parking structures. The report will gather examples from all over the world showing how functional, safety and aesthetics requirements can be fulfilled by using precast concrete.
The report shows the variety of precast concrete elements that can be used for this specific type of buildings, depending on the conceptual design and the aesthetic requirements.
First name Last name Country Affiliation Pampanin Stefano New Zealand University of Canterbury Hughes Simon Australia - Cleland Ned United States Blue Ridge Design Sennour Larbi United States The Consulting Engineers Gr., Inc. Doniak Iria Licia Oliva Brazil ABCIC Derkowski Wit Poland Cracow Technical University Fernández-Ordóñez David Switzerland fib Jones George Ireland CDC Ltd Klein-Holte Ronald Netherlands VBI Ontwikkeling BV Maas Stef Belgium FEBE Rajala Lasse Finland Sweco Rakennetekniikka Oy van der Zee Pieter Belgium Ergon Belgium Frank Dean A. United States Dean Frank Associates, LLC