Translations:Versickerung und Retention/77/en
Aus INTEWA Wiki
Ground conduits from properties, according to DIN EN 752 from 200 ha Ages i.e. from approximately 60 ha AE,b, that drain larger, harmless flood-prone yard, park or other outdoor systems can be designed according to DWA-A 118:2006, Table 4. Here the yearly occurance of the dimensioning rainfall cannot be less once within two years.
