Mortenson Construction's Bill Gregor is a big fan of off-site construction. Still, he is careful not to do prefab for prefab's sake. To nail down the contractor's component preassembly strategy for the $623-million Exempla Saint Joseph Hospital Heritage Project in Denver, Mortenson held a prefab charrette during the job's preconstruction and programming phase that included the owner, the contractor and the architect.
The exercise "is an analysis of what makes sense to drive cost, quality, safety and schedule," says Gregor, Mortenson's Exempla hospital construction executive.