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Load Classes for Drainage Channels

The recognised international standard relating to modular drainage channel systems is the European Standard EN 1433:2002 – drainage channels for vehicular and pedestrian areas. The standard defines six load classes within a load range between A 15 – F 900. In addition, EN 1433 specifies applications, definitions, design aspects, testing requirements, markings and quality control for linear drainage channels. The standard also requires drainage channel systems to be tested for loading and watertightness.

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Load classes A 15 – F 900

The European Standard EN 1433:2002 uses six load classifications between A15 – F900 for drainage channels for vehicular and pedestrian areas. The specified values refer to the test load in kilonewtons (kN).

Load class A 15: Pedestrian areas

Possible applications:

  • Footpaths
  • Cycle paths

Road user:

  • Pedestrians
  • Cyclists
  • Motorbikes
  • Walkers and wheelchairs

Load Class B 125: Private areas with light, slow-moving traffic

Possible applications:

  • Driveways
  • Yards
  • Terraces
  • Gardens

Road user:

  • Small-medium size vehicles
  • SUVs

Load Class C 250: Public areas with light traffic and moderate frequency

Possible applications:

  • Public areas
  • Parking spaces (e.g. supermarkets)
  • Residential areas
  • Parks

Road user:

  • Small-medium size cars (optionally with trailer)
  • SUVs (optionally with trailer)
  • Vans and transporters
  • Light trucks and campervans (up to 7.5t)

Load Class D 400: Carriageways or roads

Possible applications:

  • Logistics
  • Commercial areas
  • Bus stations
  • Petrol stations
  • Lorry car parks

Road user:

  • Lorries
  • Transporters

Not for installation in the carriageway of motorways

Load Class E 600: Industrial areas with loading and increased dynamics

Possible applications:

  • Industrial yards
  • Loading area

Road user:

  • Lorries
  • Forklifts

Load Class F 900: Surfaces with extremely high wheel loads and dynamics

Possible applications:

  • Airports
  • Ports
  • Container terminals
  • Race and test tracks

Road user:

  • Aeroplanes
  • Reachstackers
  • Race cars

Dynamic forces and increased traffic frequency change the requirements for drainage systems! If in doubt, choose a higher load class. If you have any questions, our experts will be happy to advise you on the selection of the right system!

Load classes for ultra heavy-duty loads and dynamic forces

The load classes of the EN 1433 standard are sufficient for many installation situations. For areas that are subject to a high frequency of ultra heavy-duty vehicles exerting extremely high loads and dynamic forces, they need to be more carefully considered on a project-specific basis. There are several factors that need to be taken into account such as steel reinforcement and expansion joints at the installation stage. Our technical support team are able to provide help and advice in these cases based on our knowledge and experience.



Do you need help choosing the right drainage system?

References with different load classes


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