Our Impact:
The WUSM / BJC Siteman Cancer Center project further demonstrates iENG’s role in complex new building design within highly technical healthcare environments. iENG provided design-assist services for this 657,000-square-foot, nine-story cancer treatment facility located in St. Louis’ Central West End. The facility houses exam rooms, treatment bays, and imaging spaces dedicated to cancer care, and also includes an integral parking garage.
iENG’s scope focused on the layout and coordination of all mechanical systems, including ductwork, HVAC piping, and medical gas piping, to support construction coordination and fabrication. This process required detailed planning, coordination, and communication to achieve a high level of functionality and efficiency throughout the facility.
One of the primary challenges on the project was limited site access. The building’s close proximity to adjacent structures in a dense urban environment required careful coordination across all trades. Extensive pre-planning was necessary to install large mechanical components into the 10th-floor penthouse, including chillers, cooling towers, air handling units, and large pipe racks.
To address these constraints, the team pre-assembled pipe racks in large sections and planned installations strategically, allowing major components to be set in place before the overhead structure was fully installed.
Through proactive pre-planning and pre-assembly, iENG helped enable the successful installation of major mechanical components, keeping activities on pace and supporting successful project delivery in a challenging environment.
This multiplex critical care facility allows patients access to the latest treatments in a new comfortable environment. Our team’s design expertise in bringing new projects to life played a huge role in the development of this new structure, which provides critical care for patients in the local area!


