Owner Principal Financial Group and management firm JLL hired G/BA to assist with LEED EB: O&M certification and to improve indoor environmental quality pertaining to air infiltration during cold weather. G/BA prepared a Level 3 energy audit, including a calibrated energy model, and devised ways to reduce pressurization to improve conditions in the lobby and skyway connections. In addition, many recommended energy conservation measures and some capital improvements were implemented.
|ASHRAE Illinois Chapter||2017 Excellence in Engineering Award|
|ASHRAE Region VI||2018 Technology Award (First Place, Commercial - Existing Building Commissioning)|
|ASHRAE Society (International)||2019 Technology Award (First Place, Commercial - Existing Building Commissioning)|
801 Grand is a 44-story office building constructed in 1989. The podium levels include retail shops and restaurants, as well as a lobby and parking. The building is all electric, other than natural gas for cooking and for retail tenants in the podium level.
Building owner and primary tenant Principal Financial Group desired building improvements in preparation for consolidating its own office space elsewhere in Des Moines, opening more space in 801 Grand for tenant rentals. In addition to saving money and demonstrating sustainability through LEED EB: O&M certification, Principal and its management firm, JLL, wanted to improve conditions for occupants by addressing air infiltration and pressurization issues.