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Computer modeling: LKPB used Computational Fluid Dynamics to model airflow in the four story atrium and designed an air diffuser system that required only half the volume of a traditional design to maintain occupant comfort.

University of Minnesota
Recreation Center Expansion
Minneapolis, Minnesota

The original Recreation Center was built in 1993 and by 2009 it was hopelessly undersized for student needs. A $60 million expansion increased the amount of recreational space on campus by more than a third and doubled the size of the existing Recreation Center. The new expansion features a brick, limestone and glass exterior that attractively blends with University building styles. Fitness/weight training rooms, a climbing wall, spinning room, suspended track, multipurpose rooms and offices will fill the new 175,000 sq. ft. space.

Electrical Systems
Electric power is provided by the extension of the campus dual-primary feeder system. This system provides emergency power for the building with battery backup lighting in stairwells. The fire alarm voice-announced system is designed to accommodate future mass-notification requirements. LED lights are used in down lighting applications for both long lamp life and reduced maintenance costs. The lighting utilizes a combination of occupancy sensors, daylight sensors and programmed controls.

Mechanical Systems
Locker rooms have a 100-percent outside air heat recovery unit that uses locker room exhaust air to warm up/cool down outside air. The gymnasium has an air handling unit with VFDs so air flow will modulate based on gym occupancy. Mechanical systems include two main air handling units, VAV with reheat boxes, VFDs on supply and return fans, campus chilled water, campus steam piped to a heat exchanger for the buildings heating water system, and VFDs on the main system pumps. A special smoke evacuation system in the four-story atrium was designed to evacuate 99,000 cfm of air/smoke in the event of a fire.