The living blueprint

If Tony Yang’s vision of the future construction site is a ballet of machines and modular parts, Qian Chen’s is the choreography that makes the project dance. Dr. Chen, an assistant professor of civil engineering who leads the Construction Integration and Digitalization (CID) lab at UBC Okanagan, focuses on “digital construction”—not just robots on the ground, but the systems that tell robots (and humans) what to do, when to do it, and what might go wrong if they don’t.

Dr. Chen and her trainees are leading a shift in how buildings are designed and managed, away from line-based drawings and toward “parametric building information modelling” (BIM). Instead of drafting walls and beams as static shapes—lines, planes, polygons—parametric BIM treats each component as a data-rich object defined by its dimensions, weight, material properties, and performance specs.

“If we have a 3D model ready with all of the defined parameters, the material specifications, the weight of the wall panel, the weight of the floor, then I can use that information to link to our construction schedule and supply chains,” says Dr. Chen. “I can assign this amount of labour to do that construction work on the site, so you don’t have to go with separate spreadsheets to manage the whole building model, material purchases, and construction process. If you have these parameters, you can use centralized information to manage the design, manage the labour, manage the resources on-site—all at the same time.”

With a centralized and continuously updated system, project stakeholders can work together simultaneously throughout the entire life of a project. “Traditionally, if you look at a construction project, we have a designer, we have an engineer, we have a manager, we have a project site supervisor,” says Dr. Chen. “These people have isolated information, and they have to make phone calls, they have to write emails, they have to exchange a lot of information individually. And that is not collaborative.”

Instead, BIM provides a “living blueprint” of the entire construction process, covering everything from design decisions to invoices, schedules, commissioning data, and repair history.

Using smart helmets fitted with augmented reality goggles, building-site inspectors can program overlays and see the next stage of construction before it happens, visualizing the upcoming work as a digital layer on top of the physical site. They can review a virtual rendition of what will be installed next week, where a wall panel will be fitted, or what conflicts might be looming behind a ceiling cavity. More than a planning tool, it’s a strategy for preventing errors—an early warning system that can avert costly rework before a misalignment becomes a demolition order.

Dr. Chen’s current focus is developing an AI-assisted robotic fabrication lab facility (“DIRFIC”—Digital Integration for Robotic Fabrication in Construction), designed to translate BIM information into automated production and mass customization. There will still be humans in the loop to make judgment calls and provide accountability, but she believes AI can augment human expertise by learning from vast stores of historical project data to create a site-wide, project-specific “integrated construction ecosystem,” where software and hardware form a continuous pipeline from design to completion.