Notre-dame de paris

Digital technology could speed up the reconstruction of Notre-Dame de Paris

Building Information Modeling (BIM) creates a highly detailed 3D model to help streamline construction.

Two years have passed since the devastating fire of Notre-Dame de Paris, but the reconstruction effort is well underway. In order to meet President Macron’s ambitious April 2024 reopening date, however, the process needs to be accelerated. Today, restoration teams are turning to a digital technology called Building Information Modeling (BIM) that takes care of every detail.

BIM is the process of creating and managing information for a built asset. With new construction, BIM would record everything from the necessary resources to the practical functionality of a building. For a restoration project, like Notre Dame, BIM provides a detailed description of what was there to provide workers with as accurate a model as possible.

The model

These BIM models can be very complex, as can be seen in the video above. This is an example of a BIM model of Notre Dame that was compiled in 2020. It is not the exact BIM that the restoration team is working with, but it gives insight into the use and value of the building. a BIM. The model is so detailed that it records individual panes of stained glass.

To ensure accuracy, digital models use laser point scans that record the building’s dimensions and the location of debris. These scans also cataloged the wide array of art exhibits and artifacts adorning the cathedral. According to Architosh, the team from Autodesk, the company providing the BIM, created some 12,450 unique objects for the digital model.

BIM Acceleration

Emmanuel Di Giacomo, Autodesk BIM Ecosystem Manager for Europe, explained that BIM will help speed up reconstruction in three main areas. This will help workers logistically determine where to place cranes and where resources need to go. Second, the model should help workers with safety and risk management. Finally, there are plans to streamline the workflow between planning and construction.

Di Giacomo went on to note that creating this BIM was a bit more difficult because Notre Dame was never well documented in 2D drawings. These plans often serve as a starting point for BIMs, but there were few documents created from surveys. The process took a full year, but the results, Di Giacomo said, showed it would be helpful in accelerating the project.

Now Notre-Dame is preparing to restore the roof, which will use 1,000 oak trees from 200 French forests. In this effort, BIM will once again lend a hand. The plan is to update the wooden roof to modern safety standards with a sprinkler system. In this case, the BIM will help identify the most effective location of the fire suppression system and wiring.

Visit Architosh to learn more about the digital technology that will help restore Notre Dame de Paris.