A reliable modular rainwater tank design starts with hydraulic demand and site constraints, not a generic tank size. Each PP module provides 0.125 m³ nominal volume, so the required module count can be developed from rainfall, catchment runoff, allowable discharge, reuse demand and the usable excavation footprint.
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 |
Inputs for Tank Sizing
For attenuation, designers compare inflow from the design storm with the permitted outlet rate. For reuse, they balance rainfall yield against daily non-potable demand and acceptable backup frequency. Infiltration systems additionally require verified soil permeability and groundwater clearance. Structural design must address burial depth, surface loading, backfill and access.
Where the System Is Used
The modular format allows the same component to form shallow-wide, narrow-long or multi-layer tanks beneath landscaped areas, parking zones and other engineered surfaces. Final dimensions should also reserve space for inlets, outlets, pretreatment, overflow, inspection and maintenance access.
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.
