John Rolfe Square Subdivision

This small and modern subdivision in Richmond has an underground stormwater system that filters and stores stormwater runoff.

Project Details

Sector: Residential

Location: Richmond, VA

Partners: Eagle Construction

Critical Products: Multi-Chamber Stormwater Management System

Read More: Solutions for the Drainage Dilemma

About the subdivision

John Rolfe Square is a small residential development of single-family homes in Richmond, Virginia. The Green Community includes 40 new Craftsman-style homes. Sidewalks and central green space give this new construction development a traditional neighborhood feel.

Stormwater management for residential construction

John Rolfe Square was developed on a 10-acre lot in Richmond’s desirable West End. Eagle Construction worked with a Richmond engineering firm and Colonial Construction Materials to find a space-saving stormwater management solution that would meet Virginia’s stormwater runoff and detention requirements.

The team selected a subsurface multi-chamber stormwater system rather than the traditional above ground stormwater pond. In order to meet detention requirements during construction, the aluminized steel chamber system initially served as a temporary detention basin.

The aluminized steel two-chamber system named Alpha and Beta was installed in an 88’ x 70’ space, wrapped in 6 oz Nonwoven Geotextile Fabric and back filled with 3,800 tons of Bluestone gravel. During construction, the chambers retained stormwater runoff, allowed for sedimentation and promoted positive drainage.

Bulkheads covered the pipes until the site was 80% developed. Once the bulkheads were removed, the system was converted to a permanent stormwater management system.

Runoff and rain flows from drop inlets through concrete pipes and into the below ground system. As water flows into the system, geotextile fabric and stone pre-filters out debris. As water builds up, it infiltrates the backfilled aggregate and finally flows into a system of 8-foot diameter corrugated steel pipes. From there, the water is released downstream at controlled rates.

There is now a shared green space over Alpha and a rain garden over Beta.

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Richmond, VA

1-800-436-6287

Virginia Beach, VA

1-757-486-1515

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