- Plan Notes
Terre Arch™ Precast Concrete Multi-Arched Infiltration Structure
Terre Arch™ is a precast concrete multi-arched structure used for infiltration of stormwater runoff.
Terre Arch™ does not require any foundation or footer. Installation is directly upon a stone subbase.
Terre Arch™ is HS-20 load rated with stone backfill to top of arch, solving site design issues when depth to water level and depth of cover present problems for HDPE pipe or arches.
Terre Arch™ design allows for confined space entry throughout the entire installation.
|Terre Arch 26||34”x8’x19’||338.89ft3 2.23ft3/ft2|
|Terre Arch 48||55”x8’x20’||637.74ft3 3.98ft3/ft2|
When the total cost to create a cubic foot of underground stormwater storage is considered; Terre Arch™ is a cost competitive precast concrete solution for an underground stormwater infiltration structure.
Terre Arch™ is a manufactured treatment device- best management practice (MTD-BMP) used for post-construction stormwater management.
Terre Hill Stormwater Systems recommends pretreatment of stormwater runoff prior to entry into any subsurface structure to maintain the long term useful life optimum functionality of the underground structure.
To learn more about Terre Arch™ and Terre Hill Stormwater Systems, please contact a member of our Stormwater Team
Stormwater Project Coordinator
Frequently Asked Questions
Terre Arch 26
Terre Arch 48