Choose the right drainage system – overview of load classes (EN 1433)
What are tax brackets?
Drainage channels and gullies must be matched to the load, drainage volume, and application. Load classes help you quickly choose the right system for every situation.
Load classes for drainage systems
The EN 1433 standard defines the load classes for drainage channels, from A15 to F900. These classes indicate how much load a system can handle (expressed in kN) and for which application it is suitable – from pedestrian zones to heavy traffic.
In specific applications, such as airports, additional standards may apply.
Important considerations for choosing the right drainage channel
Take into account dynamic loading, traffic frequency, and vehicle turning movements. When in doubt, it is best to choose a higher load class to avoid damage and maintenance.
In heavy or intense traffic conditions, a thorough analysis of the project environment is crucial to make the right choice. Are you unsure about the correct load class? Our experts are happy to help you choose the right drainage system.
Advice on choosing the right drainage channel?
Every project is unique. That is why our specialists support you with:
- selection of the correct drainage channel
- sizing and design
- integration in total water management
Contact product specialist Peter Rommel for customized technical advice.
Load classes Hauraton drainage channels
Class A 15
Traffic zones without cars or heavy traffic
- Applications: footpaths, cycle paths, green zones, and areas surrounding homes.
- Traffic: pedestrians, bicycles, scooters, rollators, and wheelchairs.
Class B 125
Traffic zones in public spaces
- Applications: driveways, parking lots, terraces, squares without motorized traffic.
- Traffic: small to mid-sized cars, SUVs.
C 250 Class
Public space with light traffic
- Applications: parking lots (e.g. supermarkets), residential construction, parks.
- Traffic: small to medium-sized cars (with trailer), small transporters, box trucks.
Class D 400
Streets and roads
- Applications: logistics centers, industrial estates, bus stops, gas stations.
- Traffic: trucks, vans.
Class E 600
Heavy-duty industrial surfaces
- Applications: loading zones, freight terminals, industrial estates.
- Traffic: heavy trucks, forklifts.
Class F 900
Extremely high loads and dynamics
- Applications: airports, ports, container terminals, racing circuits.
- Traffic: airplanes, reach stackers, race cars.
Hydraulic sizing
Besides load, water discharge (flow rate) is also a determining factor, influenced by factors such as surface area and slope, rainfall intensity, and type of paving. Use our online calculation tool to quickly determine the correct drainage channel for your application.
