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Wilhelm has worked with a number of BIM tools, integrating programs such as Revit, Tekla, and VICO. Lock says some programs seem to be more focused on architectural design and realistic renderings, whereas Tekla is more focused on structural components and can be used as a buildable model.

BIM software can help with scheduling and fabrication, allowing a contractor to review a model and see a virtual representation of a project's status. 4D simulations can show what a project will look like on a given date if work is performed as planned. "This is especially important when so many projects rely on just-in-time fabrication and delivery," Lock explains. "Contractors are being offered very powerful tools to coordinate and synchronize schedules in new ways. Ways that have the potential to reduce costly delays."

Lock sees a lot of potential for BIM systems, and is convinced it's where the industry is heading. His company has run into projects already where BIM modeling is a project requirement, and he sees BIM going beyond the building stages to offer a virtual building for the owner. "I see more and more information being stored in models. At the end of a project the owner could be given an 'as built' model that tells them exactly the components and materials used in their project and they could use it to maintain their building from there on," he explains.

Learning curve
At first glance, a BIM model might look complex, but contractors say it's easier to start working in a 3D system than a 2D system.

"I think BIM programs work the way most people think," Lock says. "An example I was given in the beginning was this: In 2D programs you draw footings by drawing lines to make an outline of one; with BIM programs you draw a footing by creating an object in your model called a footing and defining its properties, such as height, length, width and concrete type.