The site of the future west wing of the Cornell Veterinary School expansion has been excavated and the foundation is being poured for what will be a 3-story building with the new Flower-Sprecher Library, and additional program space. Look along the outer edge of the newest foundation section and you’ll see wooden forms pressed against the concrete. These forms provide stability and shape while the concrete hardens, and they provide support to the reinforcing rods embedded in the concrete. They will move further along the perimeter as pouring continues.
Without being all that knowledgeable about deep foundations, the structures in the middle of the excavated foundation might be pile caps. Piles are driven into the ground, trimmed to a predetermined height, formwork is set up around the piles and the concrete is poured and left to cure. So the piles are underneath the caps, and columns extend from the base of the cap. The load of the structure’s will be transferred to the pile caps and distributed to the piles below, providing stability for the building.
EDIT: Quoting commenter Drill Deep, who is knowledgeable about foundations: “No deep foundations at this one. Just very wide spread footers. East Hill and the Cornell campus usually has ground that can be made to do the job. The basement here is very tall and something like a hangar. Lots of headroom to run utilities.”
More information on the background and details of the expansion can be found in the September update here.
NYC-based architecture firm Weiss/Manfredi designed the expansion, and regional construction firm Welliver is the general contractor.
No deep foundations at this one. Just very wide spread footers. East Hill and the Cornell campus usually has ground that can be made to do the job. Downtown, especially near the lake, that is some of the softest material you find anywhere. Piles can be the answer depending on the required load bearing capacity. WalMart used piles with beams for example.
The basement here is very tall and something like a hangar. Lots of headroom to run utilities.
You mentioned that the DOT site on the inlet will likely require some fancy foundation work. That certainly makes development significantly more expensive.
Thanks for the updates.