Century Products StormTank• modules (side panels used on perimeter modules) can be installed under parking lots, athletic fields, etc. The geotextile fabric of PVC or HPDE liner can be incorporated as required by engineer of record.
Courtesy of StormTank•

For your hardscape project, if you're looking for a sturdy, yet decorative structure, consider StormTankT. This stormwater storage system is a high-void, strong, affordable alternative to crushed stone, concrete structures of 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. This product has been AASHTO load tested for assembling storm tank systems. The first test was live load testing, using single axle to concentrate weight. In the second test 83,000 lbs. of force was applied to a replicated single axle with a high-capacity hydraulic ram.