Posillico
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Project Overview
Posillico will provide a reliable coastal flood control system to provide risk reduction to property, residents and assets within the vicinity of South Battery Park City in response to the design storm event. Posillico is installing a flood wall around the Museum of Jewish Heritage and through Wagner Park, which is supported by micro piles, sheet piles, jet grout columns and spread footings. Posillico is installing a sequence of hydraulic flip up gates which will open during a flood event, creating a continuous flood wall around the Museum.
During non-flood events, the flip up gates will be flush with grade, which allows the public to access Wagner Park. The grade in Wagner Park is being raised roughly 9’ from existing and is supported by a sheet pile wall with soil anchors and walers. When re-opened Wagner Park will have a large lawn, a space for events which overlooks the Statue of Liberty as well as a series of planting beds with landscaping.
The Impact
This project will provide flood protection for Battery Park City which is in Lower Manhattan. As part of the project’s sustainability program, Posillico and their Subcontractors are re-using certain elements of the park such as the benches wood and granite from the original Wagner Park. Posillico and their Subcontractors were also able to recycle 100% of the concrete from demolition debris.
Logistical Challenges
As part of the foundation elements for the floodwall, Posillico installed sheet piles around the Museum of Jewish Heritage and through Wagner Park. The sheet piles were installed using the Giken which uses the press-in method and allowed Posillico to install sheet piles within 5’ of the Museum, eliminating vibration impacts on the structure. Installing sheet piles within 5’ of the neighboring structure required pre-planning of crane and equipment placement, evaluation of loading restrictions on the relieving platform as well as vibration monitoring inside and around the Museum and its artifacts. Posillico installed 11 vibration monitors and implemented a stringent vibration monitoring program that continuously monitored the Museum and its artifacts during construction.
Utility Challenges
Posillico installed micro piles around adjacent utilities located through the site. Posillico used a vacuum truck to locate and verify existing utilities such as water, electric, gas and sewer lines prior to drilling micro piles. Posillico located utilities prior to mobilizing the drilling crew and provided the as-built data to the Design Team which streamlined the re-design of the pile cap, leading to a safer environment for their crew.
Design Challenges
The project’s design is unique given the varying grade changes and unique concrete wall layout. Posillico and their survey team worked with the different disciplines of the Design Team to provide Battery Park City Authority with a product that met the design intent.
The Technology
Arrowsight is part of Posillico’s company wide safety program and is currently being used on the South Battery Park Coastal Resiliency Project. Arrowsight provides pre-shift coaching video clips of safety observations of the activities occurring on site. Posillico uses the observations from Arrowsight as a safety tool to train their crew from certain behaviors that are captured during the shift.
Want to Learn More About Posillico?
Posillico is dedicated to setting the standard for excellence in the construction industry relative to: infrastructure, quality of life, and making a difference by using innovation and solid relationships at all levels. Posillico Inc. is the premier heavy civil construction contractor in New York, Long Island, New Jersey, Texas, Florida and the Mid-Atlantic.
