The Nord Deux Sèvres Hospital (CHNDS) : a pilot worksite for digital modelling

From the complexity and density of the works to the numerous technical networks involved and extremely tight deadlines, difficulties abounded on this project for a brand new Nord Deux-Sèvres Hospital. These challenges did not intimidate worksite players, and the teams went above and beyond in overcoming them, thanks in great part to innovation.

Digital modelling to support the execution stage

The Bouygues Construction teams took four months to create a digital model of the project; an exact replica of the future works which companies from different technical trades merged with their own models. With these overlays and the involvement of the players early in the modelling, conflicts (both between different networks and between networks and structures) were very quickly detected and resolved. During the structural works phase, it was possible to experiment with various use cases and modelling often helped explain the work to the site workers and adapt resources at a moment’s notice, saving precious time on the project’s progress. Lastly, the digital model was brought to the worksite using a tablet, which served to lift reservations and monitor the finishings of the structural works.

Virtual reality for stakeholder participation

Augmented reality involved the future hospital staff very early on and enabled the project to meet expectations. Surgeons visualised and validated all technical terminals in the operating rooms. The same process was then used for signage.

 

Lean management applied to the worksites

Lean management, from daily work speed monitoring by the site workers themselves to communication with the project owner on optimising the tasks to be accomplished, has been put into practice by Bouygues Bâtiment Centre Sud-Ouest and Grand Ouest site workers assigned to structural works and organised into autonomous teams for the occasion. It was a success, as the scope of the approach broadened with the creation of the “incubator,” a space that served as a meeting point between site foremen in charge of technical trades and those in charge of specialised work for regular meetings with updates on the project’s progress.