The Department of the Interior’s (DOI) historic headquarters has remained operational during an extensive multi-phase renovation process. The entire infrastructure and interior of the 60-year-old building are being revitalized and modernized while maintaining sensitivity to the substantial historic fabric of the exterior and interior. Because the original building was one of the first federal office buildings designed to be air conditioned, the original low pressure induction system was systematically decommissioned wing-by-wing while the new HVAC system was installed, necessitating the continuous operation of two distinct HVAC systems while the phased construction continued.
The project encompassed numerous historically significant spaces, such as a 13,000 SF museum, major auditorium, library, gymnasium, and the Secretary of the Interior’s suite. GHT also provided MEP engineering design for the DOI Child Care Center, the first in GSA’s Portfolio to achieve LEED Platinum status.
In addition to providing MEP engineering design for building systems, GHT has completed numerous engineering studies. Our research resulted in the development of a best value systems replacement concept for the modernization of the entire infrastructure and interior. The innovative vertical systems replacement methodology kept the project on schedule.