Like other areas of architectural and engineering expertise, members of the heritage team have integrated Building Information Modeling (BIM) into their daily practice. BIM brings together, within a single 3D model, all the data and information—across all disciplines—required for the construction and management of a building.
Today, BIM heritage projects are increasingly common, and STGM collaborates with several clients who now require this methodology. Among the firm’s recent projects that have successfully integrated BIM are the Voltigeurs de Québec Armoury (PSPC), the Louis-Joseph Papineau Manor in Montebello (Parks Canada), the Nouvelles-Casernes (NCCQ), the Louis S. St-Laurent Building (PSPC), and the former Customs Building (PSPC).
For the team, information captured digitally directly on site is integrated into 3D models and used to manage databases in tabular form. The large volume of data incorporated in this way significantly reduces the risk of errors, data transfer issues, and unnecessary re-entry. This methodology has become invaluable for architects, as it not only enables the production of more accurate construction documents, but also facilitates the collection of statistics on the condition of the various building components. These spreadsheets are directly linked to cost estimates, meaning that any change is immediately reflected in the overall cost calculations. This technology allows us to assess project value almost in real time and anticipate adjustments when necessary. It also enables the generation of highly relevant charts when illustrating the condition of envelope components and evaluating whether interventions are required. These documents can also become valuable tools for building managers.
BIM is also used to catalogue archaeological or historical elements uncovered during restoration work. Within the virtual model, architects can identify and document elements of interest that are difficult to access or not visible. This may include, for example, an artifact or a piece of graffiti discovered in attic spaces that are inaccessible—or restricted—to the public. The artifact is then virtually tagged, with the tag linked to a descriptive record that an archaeologist, historian, ethnologist, or architect can document to the best of their knowledge. This record can be enriched over time as new information becomes available.
Beyond costs, technical considerations, construction, and building management, information modeling will—in the not-so-distant future—support more comprehensive documentation of heritage and non-heritage projects alike. Ultimately, these databases will enable future generations to save time while fostering a deeper understanding of the built heritage of today and tomorrow.