The Kaiser Permanente Glenlake back-fill project included renovation to the 125,000-sq.-ft. existing Glenlake Comprehensive Medical Center (CMC). The existing medical center was in need of an infrastructure update, including interior renovation, new construction, and MEP and HVAC upgrades. Associated site work was also included in the scope of work. With these improvements, the facility is now equipped to provide around-the-clock medical care and services to Kaiser Permanente members.

The 75,000-sq.-ft phased renovation of interior space was completed to create new ambulatory procedure units on the second floor. The main canopy of the ambulatory entrance was also updated to better accommodate the needs of the medical center.

The infrastructure renovation portion of the scope of work included renovation of the building’s mechanical, including four air handling units, two cooling towers, two chillers and a new emergency generator. The existing mechanical penthouse, parts of the fourth floor, and small areas on first and third floors of the existing facility were also replaced. The HVAC infrastructure upgrade also included a complete replacement of the building automation system.  

BIM Features

The use of virtual building was instrumental to the successful execution of the Kaiser Permanente Glenlake back-fill project. The project included significant renovations to the existing, above-ceiling building systems at levels two, three and four. In addition to the above-ceiling renovations, almost all of the building system equipment in the existing penthouse had to be replaced without interrupting the operations of the facility for more than a weekend at a time.

DPR Construction employed virtual building to coordinate the installation of all the new building systems around the existing systems and minimize the interruption to existing services. Prior to construction, laser scanning captured all existing conditions at the penthouse and the above-ceiling conditions at level one, where we would have to install new sanitary plumbing for the relocated bathrooms at level two. Three-dimensional models were developed from the laser scans and used to coordinate the new building systems below level two and in the penthouse.

For the penthouse renovation, DPR lead the phased-coordination effort to allow all key trades to install much of their new plumbing, conduit and piping around the existing systems. This would limit the interruption time to the existing facility. Then, during a few weekend shut-downs, the team was able to remove and replace the cooling tower, air handling units and other critical equipment. Once the new equipment was in place, the new plumbing, electrical and piping that had already been put in place prior to the weekend shut-down was connected. Thus, all the new equipment and systems were up and running prior to normal operation of the facility on Monday morning.

For renovation of the existing levels two through four, virtual building was used to coordinate all the new overhead systems with the existing structure and any building systems that were to remain in place, such as the storm system.

As-built models were maintained, as some systems had to be relocated to avoid unforeseen conditions, such as miscellaneous steel members that were not identified prior to construction due to the limited availability of documentation on the existing facility. DPR used the coordinated models to evaluate and document installation of the new overhead systems. As discrepancies were identified, views of the coordinated model were sent to the subcontractors via BIM 360 Glue along with as-built photos so that they could maintain their as-built models.

After each phase of the renovation had taken place and the as-built models were finalized, key equipment information was maintained using the coordinated models that were uploaded and synchronized with the equipment list on BIM 360 Field. BIM 360 Field was not only used for quality control, but was also used to view equipment in the model and update that equipment with COBie data requested by Kaiser Permanente, such as equipment manufacturer, model number, serial number and installation date. Once all the relevant COBie data was captured, the subcontractors then input this COBie data back into their as-built models. All subcontractors delivered as-built Revit models with the required COBie data. DPR combined and compiled these models and delivered the models with COBie data and stand-alone COBie data via spreadsheet to Kaiser Permanente at the end of the project.

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