Brentwood Stormtank®


Brentwood Stormtank

Applications: Detention, Infiltration, and Re-use
Components: (2) Top/Bottom Platens, (8) Structural Ribbed Columns and Side Panels (as required)
Materials of Construction:

  • Top/Bottom Platens: Polypropylene
  • Structural Ribbed Columns: PVC
  • Side Panels: Polypropylene

Storage Volume: Largest void space (up to 97%) of any subsurface stormwater storage unit currently on the market.
Versatile Design: System size and configuration can be adapted to almost any site conditions, with a maximum invert of 11’ (3.35 m) and a minimum 24” (610 mm) of top cover.
Strength: Exceeds fully-factored AASHTO HS-25 loading criteria when installed per manufacturer’s recommendations, including a minimum 24” (610 mm) of top cover.
Shipping: Shipped unassembled, saving on freight costs.
Assembly: Performed on-site. One individual can assemble a module in under two minutes with no special equipment, tools or bonding agents.

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Typical StormTank® Cross-Section


Brentwood Stormtank

Sub-Surface Stormwater Management

StormTank® Stormwater Storage System is a high-void, strong, affordable alternative to crushed stone, concrete structures or pipe chambers. The module design provides the maximum storage while minimizing the installation footprint to reduce construction costs and
freeing up valuable usable land. The open module design, with no partitions or walls between modules, allows for easy inspection and cleaning.

There are many factors that go into the development of a sub-surface stormwater storage system, including:


  • Application
  • Foundation
  • Backfill Materials
  • Vehicle Loads
  • Construction Loads
  • Lateral Loads
  • Inlet/Outlet Connection
  • Cleanout/Observation Ports
  • Inspection and Maintenance


  • Detention Basin
  • Infiltration Basin
  • Rainwater Harvesting
  • Rain Garden
  • Infiltration Swale
  • Infiltration Trench


  • Parking Lots
  • Driveways
  • Landscaping
  • Athletic Fields/Playgrounds
  • Swales and Drainage Channels