The Anchor Group was awarded the contract for design and installation of caisson walls, hoarding, dewatering, excavation, and structural caissons for this complex project. More than 40,000 ft² of contiguous caisson wall shoring was required to be installed in a short period of time. The caisson wall required 350-36 inch diameter vertical holes drilled to more than 60 feet in depth. The system was braced by 231 regroutable tiebacks with a total drilled length in excess of 18,000 feet. Forty belled caissons founded on till with diameters up to 9 feet were also required for permanent support of the building.

The schedule for the project was extremely aggressive. In order to meet this schedule Anchor Shoring supplied multiple drill rigs for installation of the caisson walls and tiebacks. Installation of caisson walls began on January 5, 2000. Excavation to finish grade was completed by May 6, 2000, one month ahead of schedule.

350 vertical drilled holes with an average length of more than 60 feet were installed by Anchor within a 2 month period.

The depth of excavation was up to 55 feet in depth. The caisson walls were braced with up to 5 rows of regroutable tiebacks with drilled lengths up to 90 feet.