Rainstore³ is a revolutionary underground water storage system, allowing retention or detention of any volume of water.

Rainstore³ is unique in that it is not a pipe or arched chamber, instead it is a free-form structure encased in a plastic liner. The structure can be as shallow as 0.1m and as deep as 2.5m, with any length and width in 1m increments, far more flexible than precast tanks. Rainstore³ elinimates site restrictions by conforming to custom project requirements.

The structure can be used for water retention by the use of an impervious liner, water is then accessible for irrigation, fire protection, manufacturing plants etc. Another application is water detention by the use of a porous liner, which controls the timing of water exit to siut the site constraints in conservation and civil works.

Rainstore³ has a void area of 94%, maximizing water storage capacity while the intrinsic strength permits heavy vehicle traffic over completed structure.

It has profound logistical advantages over traditional installations, due to its modular design and light weight characteristics. Delivery and installation to sites of limited access is now viable, expanding the potential of many locations.

Rainstore³ presents major economic and environmental benefits in best practice management. Where couldn't you build one?

Urban Applications

In current urban development, detention basins occupy valuable real estate, require ongoing maintenance and create safety hazards. An alternative is the installation of isolated Rainstore³ structures below the driveway of each lot. Occupation of the land is maximized. The use of runoff for irrigation saves precious potable water, and reduces the storm water infrastructure requirement.

Both the economic and environmental benefits are huge.

Storage basin to irrigate grass play area.	Four layer Rainstore³ structure.
Vegetated swale at low end of parking lot to store run-off and exfiltrate to soils below.	H-25 load capacity allows deep storage under parking lots with up to 94% efficiency.

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