- Patent-Pending Watertight Joint Seal System


Terre Box™ is an enclosed, precast concrete box system for the detention or retention of stormwater. Designed for underground installation, Terre Box™ is HS-25 rated, allowing direct access for installation equipment and dramatically reducing installation time by minimizing material handling and backfilling requirements.

With its precast concrete design, Terre Box is superior to metal or plastic pipes or structures. Metal corrodes, and plastic lacks the compressive strength and 'E value' of concrete. Terre Box also provides complete protection against subsidence. Because it has earned a load-bearing rating of HS-25, Terre Box can be installed below parking lots or traveled cart-ways.

When recharge is not desired, Terre Box is the preferred choice for below-grade stormwater detention. Post-tensioning provides excellent protection against leaks.

  • Underground stormwater detention or retention/recharge
  • Site-specific, precast concrete, modular design
  • HS-25 rated, a benefit both during and after installation
  • Time-saving installation
  • No maintenance

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