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| Project: | 2000 PA Avenue |
| Client: | GGA Construction |
| Design Professional: | CDA Engineering |
| Location: | Wilmington, DE |
| Classification: | Mixed Use |
| Job Size: | $3 – $5 Million |
Project Overview
This project consisted of constructing a 6-story mixed use building encompassing +/- 2.5 acres in the City of Wilmington. The gross square footage of the building was 240,658 square feet and had several below grade levels of parking. Temporary excavation support consisting of soldier beams and lagging. Excavations of 25 to 30 feet below existing grades were made to achieve the design’s basement floor elevations. Approximately 60,000 cubic yards of soil were removed and exported from the site.
In addition to the basement excavation, Corrado American installed the water and sewer utilities to the building and the onsite storm drain improvements. Our scope also included DelDOT improvements along Pennsylvania Avenue – installing an entrance to the parking garage, additional drainage improvements, and patch paving of Pennsylvania Avenue.
Key Challenges
- The site was bordered by an active train line and bridge, commercial and retail space, and two highly-traveled roadways. Access to and from the site was extremely limited.
- The excavation support design had to ensure the adjacent properties were also supported and any ground movement, limited.
- The site had once been occupied by a gas and fueling station. Corrado American worked closely with the design team and environmental consultants during basement excavation for separation and disposal of contaminated soils and groundwater.
- Due to limited information regarding the existing conditions, offsite utility work had to be redesigned. Corrado worked closely with DelDOT, the City of Wilmington, and the design engineer to re-route and re-design the offsite utility plans.
- Scheduling and coordinating road improvements along Pennsylvania Avenue proved to be a challenge. However, Corrado kept the inconvenience to drivers at a minimum.
