What makes it interesting?
This project was completed on time and on budget, despite work being in an active rail yard between active tracks to excavate a work shaft 32 feet deep. The existing ground contained boulders as large as 2 cubic yards.
How HCSS Software assisted with this project
Cumberland Valley Constructors (CVC) is a 5-year-old heavy construction company with less than 30 employees that has estimated using HCSS HeavyBid from the beginning. CVC was able to submit a multi-discipline estimate with breakouts to match the engineer’s bid form.
Cumberland Valley Constructors was invited in 2014 to bid on the CSX Radnor Yard Pump Station at their Intermodal Facility in Nashville. The Intermodal Yard was originally constructed years ago by filling in a ravine. When the yard was constructed, the 12-inch gravity sewer line serving the facility ended up being up to 50 feet deep. Over time, the sewer line collapsed under high traffic rail lines.
The solution was to locate the collapse and build a new sewage pump station just upstream. From this station, a new force main could be directionally drilled to the downstream manhole. Working between active tracks, CVC used 15-foot steel liner plates to excavate a work shaft 32 feet deep. Once the existing sewer was encountered, the shaft continued approximately 10 feet more to allow for wetwell storage capacity.
The existing ground contained boulders as large as 2 cubic yards. A precast wetwell with submersible pumps was installed inside the shaft, and a precast valve vault was installed adjacent to the pump station. Connections were made at the pump station and a drop connection was made at the downstream manhole that was 50 feet deep.