2022, the year of generalization of BIM?
Seven years after the creation of the PTNB, the BIM (Building Information Modeling) approach has been widely deployed within the real estate sector. Without being a regulatory obligation, it becomes pro.
Article by José Antonio Cuba Segura, Director BIM & Smart Building Kardham published in Journal du Net.
A sector convinced of the usefulness of BIM
Since the publication on January 26, 2014 of directive 1424 by the European Parliament, the adoption of the BIM methodology has been massive and global. Although it does not in any way constitute a regulatory obligation, it is clear that it has been widely developed throughout the building sector, from individual construction to the tertiary sector. Thus, according to the 2021 edition of the "Barometer on the use of digital technology and BIM by construction professionals" published by the BIM Plan 2022, 48% of building stakeholders consider that BIM is a strategic issue for their activity. and 66% of companies working in BIM are convinced of its usefulness. It will be all the more so in the years to come with the implementation of the RE2020 regulations which encourage professionals to strengthen the management of the energy performance of their assets.
Necessary transformation of practices and reluctance of project owners
Although BIM is tending to become widespread within the various construction trades and has been able to adapt to the constraints of project owners, certain obstacles nevertheless remain. The first is related to changing practices. Indeed, if the collaborative dimension and the continuity of information constitute the very foundations of the BIM approach, and integrating the latter necessarily implies a transformation of practices and ways of managing the act of building. Transmitting structured data from one actor to another has not yet become natural, with each actor tending to focus on their own scope of activity. However, feedback clearly shows that the teams that have benefited the most from BIM are those that have changed their professional practice to adopt the approach systemically.
The reluctance of project owners is the second obstacle to the development of BIM: again according to the barometer, 60% of companies consider that there is a lack of demand from customers. This reluctance is explained by the financial and organizational effort that the contracting authority, whether public or private, must make to embark on the process. The ability to mobilize teams to work in BIM is therefore an essential condition for its success.
An undeniable economic and environmental lever
Initial feedback shows that the BIM approach offers significant added value in terms of cost reduction, from the design phase to the operation of the structure. The first benefit is to have a better knowledge of the existing infrastructures. A well-informed digital model of the building and the automation of data make it possible to reduce the cost of surveys but also to facilitate the study of the design of the facilities. In terms of operation, precise knowledge of the structure significantly speeds up intervention times for building maintenance work, thereby improving user satisfaction. By using this digital data, the project owner can thus reduce the time and cost of non-use of its buildings and better manage the evolution of its assets. Finally, on the environmental level, the BIM approach contributes to better energy management of buildings: by providing data on the state of all the components of the structure, the digital model makes it possible to know and monitor the carbon footprint. of the building as a whole. The use of these databases will thus make it possible to accelerate environmental simulations, with a view to improving energy management required by RE2020.
In the end, the BIM approach can prove to be a powerful lever for accelerating maintenance interventions, monitoring the evolution of its assets and strengthening the energy management of structures. It is now part of the activity of players in the real estate sector and project owners who integrate it more, as evidenced by the new CCAG for public contracts published on March 30, 2021. However, we will avoid "doing BIM to make BIM”: implementing the approach requires a real strategic reflection upstream, necessary to clearly define the issues, the objectives and to draw concrete use cases.