Retention basins and stormwater detention basins
Modular underground basins from 1 to 5,000 m³, with plans drawn up to suit your site.
Store, regulate, infiltrate
Underground retention basins provide temporary storage of stormwater. Stormwater detention basins regulate its flow and allow the stored water to infiltrate into the ground afterwards.
- Temporary storage of stormwater
- Stormwater detention basins: flow regulation and infiltration
- Volumes from 1 to 5,000 m³, modular
- Other uses: wastewater, agricultural and industrial effluents, fire-fighting reserve
Sizing a basin
A quick guide to estimating the volume provided by each diameter.
Usable volume per linear metre of pipe
| Internal diameter (mm) | Volume (m³/lm) |
|---|---|
| 1000 | 0,785 |
| 1100 | 0,950 |
| 1200 | 1,130 |
| 1300 | 1,330 |
| 1400 | 1,539 |
| 1500 | 1,766 |
| 1600 | 2,010 |
| 1800 | 2,544 |
| 2000 | 3,140 |
| 2200 | 3,800 |
Theoretical pipe volumes; the basin’s usable volume depends on configuration, gradient and equipment.
The right solutions
The ranges we most often propose for this application.
What our support changes
Custom plans
Plans drawn up to suit the available footprint.
Modular
Modular systems from 1 to 5,000 m³, with plans drawn up.
Compatible manholes
Compatible inspection manholes, with corrugated or smooth connections depending on the model.
Frequently asked questions
Do you use the basins for firefighting reserves?
Yes, the range of basins includes fire-fighting reserves.
How do you size a retention basin?
You need the contributing area, the design rainfall, the permitted discharge rate and the available footprint. We help you set out these data and calculate the volume and the best-suited pipe configuration.
Need personalised support?
Tell us about your project: we help you choose the right solution, size it and prepare the installation. Marc Sadok replies promptly.