Owner: Froedtert Health
Concrete Supplier: Riv/Crete Ready Mix
Contractor: CG Schmidt, Inc.
The parking area is a 5-level, cast-in-place structure with 3,305 spaces, designed for a 50-year service life. A high-density, durable concrete mix with low permeability was developed to have good workability and excellent finish ability.
Fully encapsulated post-tensioning tendons were placed in the concrete to provide compression to minimize cracking and reduce the overall concrete mass. A 6000-psi compressive strength concrete mix was used in the combined floor slab and beams on the elevated floor levels. The 52,300 cubic yards of concrete has a ¾ inch diameter maximum aggregate size, 6% air entrainment, a maximum water/cement ratio of .40, and 2 gallons per cubic yard of corrosion inhibitor.
Concrete allowed the building to be constructed in four separate phases, each commissioned into service while others were under construction. The project includes Wisconsin’s first permanent natural gas-fired snow melter and the ability to expand vertically with two more stories.