D400 Channel Drains — Road & Heavy Vehicle Drainage
D400 is the load classification under EN 1433 used for road drainage and areas subject to regular heavy vehicle traffic. Forti Nova supplies the R100 D400 RapidLock and U100 D400 channel systems.
Typical applications
- •Roads and adopted highways
- •Heavy vehicle access routes
- •Industrial access roads
- •Urban drainage
Requires further assessment
- —Extreme industrial loading — F900 may be required
- —General domestic use
Channel materials
D400 channels are constructed in polymer concrete for the structural demands of road and heavy vehicle environments.
Grate types
D400 channels use ductile iron grates engineered for heavy vehicle loading.
Installation considerations
D400 installation requires an appropriate concrete surround, correctly prepared sub-base and compliance with manufacturer installation guidance. For highway applications, relevant highway authority requirements apply.
D400 Products

ULMA R100 D400 RapidLock Channel — Polymer Concrete — 100mm deep
100mm internal width

ULMA R150 D400 RapidLock Channel — Polymer Concrete — 220mm deep

ULMA R200 D400 RapidLock Channel — Polymer Concrete — 200mm deep

U100 D400 Channel — Polymer Concrete
100mm internal width

ULMA R100 D400 RapidLock Channel — Polymer Concrete — 150mm depth
100mm internal width

ULMA R100 D400 RapidLock Channel — Polymer Concrete — 200mm depth
100mm internal width

ULMA R100 D400 RapidLock Channel — Polymer Concrete — 250mm depth
100mm internal width
Adjacent load classes
Frequently Asked Questions
Is D400 required for all road drainage?
D400 is the standard classification for road and heavy vehicle drainage. The appropriate class depends on the specific road type, vehicle loading and applicable authority requirements.
What is RapidLock?
RapidLock refers to the grate-securing mechanism on the R100 D400 channel. Confirm the specific mechanism and installation requirements with manufacturer documentation.
