DRAINAGE DESIGN CASE STUDY:

In Atlantic Highlands, New Jersey, a newly installed steel sheet piling wall was outfitted with a maintainable drainage system to protect the structure and surrounding landscape from erosion and hydrostatic buildup. The project, located at 17 Avenue D, involved the installation of 70 JET Filter weep hole assemblies and was completed by Nuccio Construction, LLC.

Steel sheet piling is a common choice for retaining walls in urban and waterfront settings due to its strength and space-saving footprint. However, without effective drainage:

• Hydrostatic pressure can build up behind the wall

• Soil loss and erosion compromise long-term stability

• Walls can shift, lean, or even fail prematurely

To mitigate these risks, JET Filter System weep holes were specified and installed to deliver relief from trapped groundwater and allow for sediment filtration.

The team installed 70 JET Filter JF4SS maintainable weep hole assemblies into the face of the steel sheet piling system.

✅ System Specs:

• Part #: JF4SS

• Quantity: 70

• Size: 4” Open-End ASTM 316/316L Stainless Steel

• Filter Media: Mirafi® Filter-Weave FW 300

• Installation Method: Directly through steel sheet pile wall per engineered layout

The maintainable design ensures long-term access for inspection and flushing—essential for urban installations where access is limited post-construction.

Steel sheet piling walls are strong, but without drainage:

• Water collects behind the structure

• Backfill becomes saturated

• Long-term wall movement and erosion occur

JET Filter’s system provides:

• Hydrostatic pressure relief

• Backfill sediment retention

• Long-term access for inspection or cleaning

These benefits make it ideal for urban sites, commercial development zones, and water-adjacent properties.