Medical Office Building

University of Illinois - Chicago

IMEG provided engineering services for the state-of-the art Mile Square Health Center medical office building containing medical offices, convenient / urgent care, primary care, and a dentistry suite.


Due to familiarity, cost, ease of modification for tenant changes, and reduced maintenance, UIC opted to use a variable air volume (VAV) HVAC system with central air handling units (AHU) and distributed VAV boxes with reheat. The system consists of four semi-custom AHUs located in the mechanical penthouse. These units are tied to central supply and return risers so that any AHU can serve any floor or individual space within the building. The AHUs also utilize fan wall technology, which improves unit efficiency and reduces the concern of supply fan failure. All units contain energy recovery wheels. All fan and pump motors use variable frequency drives.


The building contains stand-alone cooling systems due to lack of available campus cooling capacity. An air-cooled, 526-ton chiller plant has two chillers with space available for a third chiller when the rest of the building is built out. The building features radiant heating. A high-efficiency condensing natural gas boiler plant with total input of 9,000,000 BTUh and output of 7,920,000 BTUh generates heating water and domestic hot water.


The campus medium voltage electrical system was extended to serve the building. Two separate feeders and transformers serve a main-tie-main switchgear lineup with automatic transfer functionality. Each feeder and transformer is sized for the full load of the building. A natural gas generator provides 200 KW of emergency and standby power.


Aggressive lighting controls, including occupancy sensors, daylight sensors, and building automation integration, are used throughout the building. Low-flow plumbing fixtures and a voice evacuation fire alarm system also were provided.


Chicago, IL



120,000 SF


Services Provided

Structural, MEP, Fire Protection, Technology, Energy Modeling, Construction Administration