• COM6: Prefabrication

    COM6: Prefabrication

  • COM6: Prefabrication

    COM6: Prefabrication

Motivation

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.

 

Stef MaasCommission Chair
Stef Maas
Wit DerkowskiDeputy Chair
Wit Derkowski
Larbi SennourCo Deputy Chair
Larbi Sennour

First name Last name Country Affiliation
Iria Doniak Brazil ABCIC
David Fernández-Ordóñez Switzerland fib
Larbi Sennour United States The Consulting Engineers Gr., Inc.
Bruno Della Bella Italy Gruppo Centro Nord
Antonello Gasperi Italy Private
Paolo Riva Italy University of Bergamo
Pieter van der Zee Belgium Ergon Belgium
Stef Maas Belgium FEBE
Marco Menegotto Italy Private
Ronald Klein-Holte Netherlands VBI Ontwikkeling BV
Wit Derkowski Poland Cracow Technical University
André de Chefdebien France Rector Lesage
Holger Karutz Germany ad-media GmbH
Sthaladipti Saha India Larsen & Toubro Ltd
Lasse Rajala Finland Sweco Rakennetekniikka Oy
George Jones Ireland CDC Ltd
Ned Cleland United States Blue Ridge Design
Jason Krohn United States PCI - Precast/Prestressed Concrete Institute
Simon Hughes Australia Precast Concepts Pty. Ltd
Stefano Pampanin Italy Sapienza University of Rome
Bin Zhao China Tongji University
Albert De la Fuente Spain Universitat Politècnica de Catalunya
Dean A. Frank United States Dean Frank Associates, LLC
Minehiro Nishiyama Japan Kyoto University
Thomas D’Arcy United States Private
Mounir El Debs Brazil Univ. Sao Paulo at Sao Carlos
GANGATHARAN MAHALINGAM India Larsen & Toubro Ltd
Marcelo Ferreira Brazil UFSCAR Federal University of Sao Carlos/ABCIC
Válter Da Guia Lucio Portugal Universidade Nova de Lisboa
Alessandra Ronchetti Italy ASSOBETON
Peter Meuwissen Germany Progress Group GmbH
Juan Carlos Lancha Fernandez Spain PACADAR SA

  • 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.


    Stef MaasConvener
    Stef Maas
    Ronald Klein-HolteCo-convener
    Ronald Klein-Holte

    First name Last name Country Affiliation
    Iria Doniak Brazil ABCIC
    Bruno Della Bella Italy Gruppo Centro Nord
    Pieter van der Zee Belgium Ergon Belgium
    Stef Maas Belgium FEBE
    Luciano Marcaccioli Italy Officine Piccini SpA
    Paul Kourajian United States Molin Concrete Products Co.
    François Huitric France CERIB
    Matthieu Scalliet France CERIB
    Kim Elliott United Kingdom Precast Consultant
    Gösta Lindström Sweden AB Strangbetong
    Ronald Klein-Holte Netherlands VBI Ontwikkeling BV
    Wit Derkowski Poland Cracow Technical University
    Lasse Rajala Finland Sweco Rakennetekniikka Oy
    Barry Crisp Australia Crisp Consultants PTY Ltd
    Simon Hughes Australia Precast Concepts Pty. Ltd
    Olli Korander Finland -
    David Fernández-Ordóñez Switzerland fib
    Sergey Bronin Russian Federation PATRIOT-Engineering
    Marcelo Ferreira Brazil UFSCAR Federal University of Sao Carlos/ABCIC
    Wayne Kassian Canada Kassian Dyck Associates

  • 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;
    • production;
    • transport and erection;
    • recommended testing equipment;
    • quality control operations;
    • maintenance.


    Dean FrankConvener
    Dean Frank

    First name Last name Country Affiliation
    Iria Doniak Brazil ABCIC
    David Fernández-Ordóñez Switzerland fib
    Bruno Della Bella Italy Gruppo Centro Nord
    Stef Maas Belgium FEBE
    Jaime Fernández Gomez Spain Universidad Politecnica de Madrid
    Juan Carlos Lopez-Agüi Spain IECA
    Alejandro Lopez-Vidal Spain ANDECE
    Holger Karutz Germany ad-media GmbH
    Dean A. Frank United States Dean Frank Associates, LLC
    Alessandra Ronchetti Italy ASSOBETON
    Wayne Kassian Canada Kassian Dyck Associates
    Munir Basmaji United Arab Emirates -
    Peter Meuwissen Germany Progress Group GmbH
    Navendu Rai United Arab Emirates -

  • 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 was the study of the most recent work developed on sustainability and in particular Life Cycle Assessment regarding structures where precast concrete elements are used. Then, the TG worked on the drafting of recommendations regarding the study and assessment of precast concrete elements and structures, with respect to sustainability. This covered all aspects regarding this kind of structures, from planning, design, execution, use, maintenance, and remedial activities, up to dismantling, reuse and recycling. This conclusion of this work of the TG was the publication of the joint PCI-fib Bulletin 88 Sustainability of precast structures.

    The final objective of the TG involves the proposal of a multi-criteria decision-making model that can be used for the assessment of the sustainability of structures with precast elements.


    Albert de la FuenteConvener
    Albert de la Fuente
    Irene JosaCo-Convener
    Irene Josa
    David Fernández-OrdóñezCo-Convener
    David Fernández-Ordóñez

    First name Last name Country Affiliation
    Iria Doniak Brazil ABCIC
    David Fernández-Ordóñez Switzerland fib
    Stef Maas Belgium FEBE
    Alejandro Lopez-Vidal Spain ANDECE
    Emily Lorenz United States -
    Stefano Pampanin Italy Sapienza University of Rome
    Koji Sakai Japan Japan Sustainability Institute
    Petr Hajek Czech Republic Czech Technical University in Prague
    Albert De la Fuente Spain Universitat Politècnica de Catalunya
    Jaime Gálvez Ruiz Spain Universidad Politecnica de Madrid
    Dean A. Frank United States Dean Frank Associates, LLC
    Antonello Gasperi Italy Private
    Tomas Plauska Netherlands Consolis
    Alessandra Ronchetti Italy ASSOBETON
    Munir Basmaji United Arab Emirates -
    Irene Josa United Kingdom University College London (UCL)
    Freddy Ariñez Fernandez Spain Universidad Politécnica de Madrid

  • 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.


    Juan-Carlos LanchaConvener
    Juan-Carlos Lancha

    First name Last name Country Affiliation
    Juan Carlos Lancha Fernandez Spain PACADAR SA
    Jürgen Grünberg Germany University Hannover
    David Fernández-Ordóñez Switzerland fib
    Stein Atle Haugerud Norway Dr. techn. Olav Olsen a.s.
    Albert De la Fuente Spain Universitat Politècnica de Catalunya
    Iria Doniak Brazil ABCIC
    Fernando Martinez Perez-Beato Spain DYWIDAG Sistemas Constructivos
    Tomas Plauska Netherlands Consolis
    Celia Gómez del Pulgar Spain Calter
    Ramaseshu Kittur Srinivasan India Padacar
    José Ángel Rodrigo Ramiro United Kingdom RPS Group
    Eduardo Salete Casino Spain Universidad Nacional de Educacion a Distancia
    Borja San Vicente Larrechi Spain Siemens Gamesa
    Jokin Benavides Spain -

  • 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”.


    Marcello WaimbergConvener
    Marcello Waimberg
    Ken-ichi KataCo-Convener
    Ken-ichi Kata

    First name Last name Country Affiliation
    Milan Kalny Czech Republic Pontex s.r.o. Prague
    David Fernández-Ordóñez Switzerland fib
    Pieter van der Zee Belgium Ergon Belgium
    Kenichi Kata Japan Sumitomo Mitsui Consctruction Co, Ltd.
    Jongsung SIM Korea, Republic of Hanyang University
    Freddy Ariñez Fernandez Spain Universidad Politécnica de Madrid
    Mario Garcia Gonzalez Spain GRUPO PACADAR
    Luis Matute Rubio Spain IDEAM S.A.
    Mario Petrangeli Italy Mario Petrangeli & Associati
    Helder Figueiredo Spain IDEAM SA
    Robert Wheatly United Kingdom Atkins
    Sung-Yong Park Korea, Republic of KICT
    Yen Lei VOO Malaysia Dura Technology Sdn. Bhd
    Chen Baochun China Fuzhou University
    Sameh El-Ashri United Arab Emirates e.Construct
    Pankaj Garg India Atkins
    Lars Lundorf Nielsen Denmark COWI
    Ruslan Pogrbniak Russian Federation Slavutich
    William Nickas United States PCI
    André de Chefdebien France Rector Lesage
    Alessandro Palermo New Zealand The University of Canterbury
    Albert De la Fuente Spain Universitat Politècnica de Catalunya
    Fernando Stucchi Brazil ABECE/EGT
    Hugo Corres Spain FHECOR Ingenieros Consultores
    Marcelo Waimberg Brazil EGT Engenharia/Abcic
    Maher Tadros United States University of Nebraska-Lincoln
    Byungsuk Kim Korea, Republic of Hanyang University
    Jasson Tan Malaysia Dura Technology
    Steven Nolan United States Florida Department of Transportation
    Ong Chong Yong Malaysia EXPERIVA SOLUTIONS
    José Rui Pinto Portugal Krear Construção Industrializada S.A
    Venkataramana Heggade India Indian National Academy of Engineers
    Mamdouh El-Badry Canada University of Calgary
    Stephen Salim United Kingdom Peter Brett Associates LLP
    Gopal Srinivasan United Kingdom Arup
    Yin-Wen Chan Taiwan, Province of China National Taiwan University
    Richard Brice United States Washington DOT
    Bruno Briseghella China Fuzhou University
    Gilberto Dreas Italy Deal
    Milad Hafezolghorani Esfahani Malaysia Dura Technology
    Somnath Mukherjee Malaysia HSS Integrated
    Ólafur Haraldsson Iceland Icelandic Road and Coastal Administration
    My Han Korea, Republic of Asian Concrete Federation

  • 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.


    Stefano PampaninConvener
    Stefano Pampanin

    First name Last name Country Affiliation
    David Fernández-Ordóñez Switzerland fib
    Larbi Sennour United States The Consulting Engineers Gr., Inc.
    Georgia Kremmyda Greece NTUA
    Ioannis Psycharis Greece NTUA Nat. Technical University of Athens
    Sevket Ozden Turkey OTS INSAAT Engineering & Design Co.
    Iman Hajirasouliha United Kingdom The University of Sheffield
    Andreas Lampropoulos United Kingdom University of Brighton
    Tryfon Topintzis India Katerra India Pvt. Ltd
    Marco Savoia Italy University of Bologna
    Marco Menegotto Italy Private
    Wit Derkowski Poland Cracow Technical University
    Barry Crisp Australia Crisp Consultants PTY Ltd
    Stefano Pampanin Italy Sapienza University of Rome
    Bin Zhao China Tongji University
    Salyendra Ghosh United States S.K. Ghosh Associates, Inc.
    Thomas D’Arcy United States Private
    Minehiro Nishiyama Japan Kyoto University
    Ned Cleland United States Blue Ridge Design
    Paolo Riva Italy University of Bergamo
    Marco di Prisco Italy Politecnico di Milano
    Gennaro Magliulo Italy University of Naples “Federico II”
    Roberto Nascimbene Italy IUSS
    Birol Doyranli Turkey Alacalı İnşaat
    Erkan Akpinar Turkey Kocaeli University

  • 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.


    Jason KrohnConvener
    Jason Krohn

    First name Last name Country Affiliation
    Gösta Lindström Sweden AB Strangbetong
    N. Vambersky Netherlands Corsmit Raadgevend Ingenieurs
    Holger Karutz Germany ad-media GmbH
    Jason Krohn United States PCI - Precast/Prestressed Concrete Institute
    Barry Crisp Australia Crisp Consultants PTY Ltd
    Simon Hughes Australia Precast Concepts Pty. Ltd
    David Fernández-Ordóñez Switzerland fib
    Carlos Chastre Rodrigues Portugal Universidade Nova de Lisboa
    Antonello Gasperi Italy Private
    Dean A. Frank United States Dean Frank Associates, LLC
    George Jones Ireland CDC Ltd
    Marco Menegotto Italy Private
    Joost Walraven Netherlands Delft University of Technology
    Alessandra Ronchetti Italy ASSOBETON

  • 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.


    Larbi SennourConvener
    Larbi Sennour
    Iria DoniakCo-Convener
    Iria Doniak

    First name Last name Country Affiliation
    Stefano Pampanin Italy Sapienza University of Rome
    Simon Hughes Australia Precast Concepts Pty. Ltd
    Ned Cleland United States Blue Ridge Design
    Larbi Sennour United States The Consulting Engineers Gr., Inc.
    Iria Doniak Brazil ABCIC
    Wit Derkowski Poland Cracow Technical University
    David Fernández-Ordóñez Switzerland fib
    George Jones Ireland CDC Ltd
    Ronald Klein-Holte Netherlands VBI Ontwikkeling BV
    Stef Maas Belgium FEBE
    Lasse Rajala Finland Sweco Rakennetekniikka Oy
    Pieter van der Zee Belgium Ergon Belgium
    Dean A. Frank United States Dean Frank Associates, LLC
    Cem Özer Turkey Peikko Turkey & Statica Consulting
    Wayne Kassian Canada Kassian Dyck Associates
    Nick Zygouris Greece Lithos Consulting Engineers
    Seyit İsmail Ulusoy Turkey CEG TR

  • TG6.11 - Vison of precast concrete on social challenges

    TBD


    Mischa Falger.Convener
    Mischa Falger

    First name Last name Country Affiliation
    Mischa Falger Netherlands -
    David Fernández-Ordóñez Switzerland fib

 

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