Attenuation Storage Tanks

Any structure that creates a below ground void that may be used to temporarily provide surface water storage prior to infiltration, whether reused or discharged in a controlled manner, are generally termed as attenuation storage tanks. They have significantly higher storage volume capacity than granular-filled structures and can be used beneath areas with a primary purpose other than drainage, including amenity, roads and parking areas.


Ridgistorm-XL Lifting Points
Permavoid 85mm
Permavoid 150mm
Permavoid Biomat
Permavoid Geomembrane
Permavoid Medium Duty with Biomat
Permafilter Geotextile
Permavoid Permatex 300
Permaties & Shear Connectors
Permavoid System Components
Polystorm Lite
Polystorm Xtra
Polystorm Inspect
Polystorm Access
Polystorm Soakaway Geotextile
Polystorm HD Soakaway Geotextile
RIDGISTORMAccess Manholes
RIDGISTORMCheck - Orifice Plate Flow Control Chambers
RIDGISTORMCheck - Vortex Flow Control Chambers
RIDGISTORMControl - Penstock & Valve Chambers
RIDGISTORMSeparate Catchpits
RIDGISTORMSeparate Silt Traps
RIDGISTORM-X4 - Stormwater Treatment System
UTX Chamber
Safety Chain Assembly
Guardrail Assembly
Ladders & Steps
Ridgistorm-XL Toe Holds