EN 752-4 : 1997

Foreword
1 Scope
2 Normative references
3 Definitions
4 Sources of additional information
5 Protection from surcharge and flooding
6 Protection from pollution
7 Protection from septicity
8 Self-cleansing velocities
9 Hydraulic calculations
10 Wastewater design flows
11 Surface water and combined drain and sewer
      design flows
12 Environmental considerations
Annex A (informative) Sources of additional information
Annex B (informative) Hydraulic design data
Annex C (informative) Calculation of wastewater flows
          for drain systems
Annex D (informative) Selection of flow simulation method
Annex E (informative) Bibliography

Applicable to drain and sewer systems, which operate essentially under gravity, from the point where the sewage leaves a building or roof drainage system, or enters a road gully, to the point where it is discharged into a treatment works or receiving water.