Posillico, Inc. Uses HeavyBid on Hoboken Block 110 Site Remediation

October 8, 2015 joshespinoza

Posillico, Inc. Uses HeavyBid on Hoboken Block 110 Site Remediation

Posillico, Inc. Uses HeavyBid on Hoboken Block 110 Site Remediation

The Hoboken Block 110 Site Remediation project consisted of installing steel sheet pile demarcation wall around the perimeter of a former Manufactured Gas Plant (MGP) site, constructing a soil freeze support of excavation wall, and erecting a negative pressure enclosure. The project also involved site dewatering and excavation and disposal of 100,000 tons of impacted hazardous and non-hazardous soil, as well as relocation of the 200-foot by 130-foot negative pressure enclosure using a crane. Excavation was performed under a negative-pressure enclosure, to a depth of 28 feet below grade — 24 feet below the water table. With the enhanced ground water cuttoff of the frozen soil wall, dewatering was greatly reduced. Posillico excavated all of the soil from within the negative pressure enclosure, minimizing impacts to the community.

What makes it interesting?

This project was complex because the work was completed in a dense urban area. Posillico used “Ground Freezing” technology, an innovative approach to the support of excavation, to eliminate the need for internal bracing or tie backs to support excavation.

How HCSS Software assisted with this project

HeavyBid made it possible to efficiently compare the cost of ground freeze soil support method versus multiple, more traditional, support-of-excavation designs. By comparing multiple estimates, Posillico was able to comfortably choose the most cost-effective methods for completing the project. HeavyBid reports allowed Posillico to clearly show cost savings to the client, which ultimately helped them become the successful bidder.

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