Stormwater management
GARANTIA® offers stormwater management products which help to take the pressure off drains and minimise the risk of flooding.
Dimensioning aid for the required number of soakaway tunnels
| Soil type I Kf value | at 100 m² | at 200 m² |
| Gravel I 10 m-3 | 3 | 5 |
| Medium sand I 10 m-4 | 7 | 14 |
| Fine sand I 10 m-5 | 12 | 24 |
| Silt I 10 m-6 | 19 | 37 |