What is the state of the art of a real project carried out by BIM today ? The Workshop BIM Virtual, launched in July 2016 by the UTP and the USH, delivering its findings at the end of nine months of experimentation. The operation has mobilized 130 different actors, in order to evaluate the process of collaborative work in retro-design.
The Union sociale pour l’habitat (USH) and the Plan for Digital Transition for the Building (UTP) have conducted, within a period of nine months, a large-scale project to assess “the state of the art, in real life, BIM today“. The Workshop BIM Virtual has, in fact, been from a building already built in the traditional manner and to lead the project again, this time digitally, with the tools available. The goal ? To demonstrate what the professionals know “specifically and optimally make BIM level 2, for a current transaction being processed in separate batches with TPE/PME, following the milestones of the law MOP“. Namely, the phases of programming, design, realization and operation, but also to anticipate those of the deconstruction and recycling.
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The workshop is therefore attached to demonstrate what should or could otherwise achieve through the digital mock-up, designed to simplify the work. Christian Herreria, the pilot of the project, said : “Even if there is a lot written about the BIM, the sector lacked a comprehensive vision for a opéraiton piped treated by BIM in separate lots“. He believes that further experiments currently being carried out would be slow to deliver their findings and the speed of approach of retro-engineering allowed it to overcome “the long phases of design“, building on the existing “BIMisé“. The operation chosen was a building of 30 units of social housing of the OPH of La Rochelle, in the quartier Saint-Eloi. A building R+3, label BBC Effinergie and operated since the end of the year 2012.
Standard tools but protocols to review
First challenge : to bring together all the actors potentially involved, professional organizations, business, facilitators, and practitioners of BIM and observers/contributors (on some specific topics). A collaborative platform has therefore been established, with a steering organisation ensuring the follow-up. In addition to common tools (Archicad, Trimble Connect, Attic+, Revit, Allplan, Tekla, Plancal Nova, Alpi…), the experiment was also the opportunity to use the work of the UTP as the methodological guide for a convention BIM. Not less than 130 stakeholders participated in the Workshop, of which 44 were operational(*). Eight meetings have been held to date.
Workshop BIM Virtual © ABV-PRO Archi 3D
Christian Herreria reveals : “Even if the tools are still perfectible, especially in terms of interoperability, we now know overcome a few problems that come up. The real difficulties are rather of the process and the organization of collective work around the model“. He believes that the rules and objectives must be defined in advance, that a conductor must be selected and the stakeholders are trained in the collaborative tools in place. “We must, therefore, begin by precisely defining the specifications of the operation and the various protocols (MOA, MOE, companies) which are adapted to the maturity of BIM players to set the rules : who does what, when, how and why ?“, he adds. It is as well that the first version of the protocol has been extensively revised, because too complex and not accurate enough. “We’re up to version 7, “says the driver of the project. The management of the BIM must then ensure that the application of the protocol : “at this level, we have seen the difficulty of changing processes and practices“. A question that has been debated “and, therefore, the business organizations must take, “concludes the specialist.
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(*) 30 professional organizations, 22 interveners, 17 industrial suppliers, 27 other business and industry, 5 technical service providers in support, 29 contributors and observers