Case Study Details

The New York City Department of Design and Construction (NYC DDC) upgraded the drainage system behind concrete retaining walls along Huguenot Avenue and Swaim Avenue in Staten Island to reduce hydrostatic pressure and protect critical infrastructure. Urban sites like Staten Island are especially vulnerable to: water buildup behind retaining walls, freeze-thaw damage in colder months, soil erosion and foundation weakening, structural wall failure without adequate water relief. The NYC DDC project prioritized low-maintenance, long-lasting drainage solutions for long-term reliability in a space-limited city setting.

Products Used

• 30 units of JET Filter – JF4SS: 4″ Diameter Open End Maintainable Weep Hole Filter, featuring ASTM 316/316L Stainless Steel Housing and Mirafi® Filter-Weave FW 300 Geotextile Filter Media.

Solutions

Working with Inter Contracting Corp the team installed 4″ components to support long-term hydrostatic pressure relief, protect surrounding structures, and are easily accessible for cleaning and inspection – critical in high-density environments.

Technical Details