Construction update March 2022: Earth retention work is complete
March 25, 2022
Earth retention system work has been completed at the Obama Presidential Center site, creating a metal perimeter around the subterranean level of the main buildings and parking garage that will prevent water from infiltrating the buildings. Dewatering continues, draining groundwater from within the footprint of the Museum, Forum, Library and Garage. Mass excavation also began this week, which will create fairly constant movement of trucks in and out of the site on the Cornell Drive side, for the next several weeks.
March 4, 2022
The steel sheeting seen below extends 30-35 feet into a thick clay layer beneath the construction site to form the sides of a basin-like structure that will protect the buildings and Garage from the surrounding groundwater. Groundwater captured in the basin will begin, along with the mass excavation of the dirt in this area to allow for pouring the lowest level concrete caisson caps, grade beams, and floor slabs later this Spring.