These underground rainwater storage tank modules replace a fixed rigid vessel with a configurable PP structure assembled inside the excavation. The tank footprint and volume can be adapted to the site while the area above remains available for landscaping or other approved use.
Product Specifications
| Item | Specification |
|---|---|
| Type | Rainwater collecting module |
| Material / color | PP / black |
| Module size | 680 × 410 × 450 mm |
| Nominal volume | 0.125 m³ per module |
| Modules per m³ | 8 |
| Weight | 8 kg per module |
| Working temperature | −30°C to +120°C |
| Compressive strength | 25 tonnes/m² |
| HS code | 3925900 |
| Quality system | ISO 9001:2008 |
Storage Below Usable Ground
Each module provides 0.125 m³ nominal volume and weighs 8 kg, simplifying transport and manual assembly. A sealed geomembrane system retains water for reuse or controlled discharge; a permeable geotextile system may support infiltration where conditions permit. The tank envelope, joints and protection layers must be specified as a complete system.
Where the System Is Used
The modules are intended for engineered rainwater and stormwater projects at buildings, parks, parking areas, road corridors and sports facilities. Designers should confirm cover depth, imposed loading, excavation geometry, water table, inlet/outlet layout and inspection provision before determining quantities.
Installation Principle
Prepare the excavation and structural base to the engineer’s design, assemble the interconnecting modules, then wrap the tank for its intended function. A permeable geotextile configuration supports infiltration; a sealed geomembrane configuration supports storage and reuse. Inlets, outlets, pretreatment, inspection access, ventilation, backfill and cover depth must be specified for the site.
Project and Shipping Reference
| Component | Packing |
|---|---|
| 680 × 410 mm section | 8 pcs per bundle |
| 450 × 410 mm section | 10 pcs per bundle |
| 20 ft GP reference | Approximately 90 m³ by bundle |
B2B Project Support
Leiyuan has produced plastic gardening and water-management components since 2008. To review a project, provide the required storage volume, catchment area or design flow, intended function, burial depth, surface load and delivery destination.
