Chicago Botanic Garden, Regenstein Center

Glencoe, IL

Chicago Botanic Garden, Regenstein Center


GBA provided engineering design services to the 78,000-square-foot education facility, including a 10,000-square-foot addition

A complete renovation of the building and expansion of the public areas on the first floor; including exhibition galleries, a library, an auditorium, meeting rooms, a botany lab, a design lab, a catering kitchen and greenhouses. The lower level houses non-public functions, including offices, shops and plant preparation.



ASHRAE Illinois, Excellence in Engineering Award, 2006

Renovation and Expansion, Engineering Design

In this project, GBA replaced all air-handling equipment and designed new kitchen and lab exhaust systems. Replacement included conversion of constant volume systems to variable air volume systems, and CO2 monitoring and control of outside air.

  • HVAC systems serving rare book storage and one gallery were designed to maintain tight temperature and humidity controls.
  • A 300-ton centrifugal chiller was replaced with a 350-ton screw chiller with a sound-attenuating enclosure, which was selected for quiet operation to eliminate existing noise transmission to the public spaces.
  • The constant volume chilled water system was converted to a primary variable flow system.
  • A new condenser water filtration system was installed to treat the pond water used for chiller condenser water.
  • A new sprinkler system was designed to serve the entire (previously non-sprinkled) building, and a new gaseous fire protection system helps protect a rare book storage area.

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