- Made in North Devon since 1973
- BSI Kitemark ready-mixed concrete
- Manufactured to applicable British Standards
- UK-wide & European delivery
Civils · drainage · highways
Headwalls & Wing Walls.
CIRIA-detailed. Cast to your engineer's outfall detail.
Precast headwalls and wing walls for culvert outfalls — pipe sockets cast in, splayed wings and scour aprons detailed against CIRIA C786. Screens and grilles are steel fabrication, supplied by others. Catalogue sizes from 600mm to 1200mm (2ft to 3'11") pipe; bespoke from 1800mm up to 3000mm (5'11" to 9'10") span. Cast in C40/50 concrete. Please call to check current yard stock or current lead times.
A headwall is the precast concrete face that retains the embankment around a culvert outfall and stops the watercourse from undercutting the pipe. CIRIA C786 sets the design rules for hydraulic capacity, scour protection and screen access. WCCP cast catalogue and bespoke headwalls to suit.
Highway, utility, infrastructure and farm outfalls — we cast and deliver across the UK from the Holsworthy yard. Excavation, bedding, setting and backfill are by the installing contractor.
- · CIRIA C786 detailed
- · 600mm to 3000mm (2ft–9'10")
- · Splay 30°/45°/60°
- · Trash screen option
- · Cast to your detail
Specification
Pipe sizes, dimensions and splay options.
Catalogue sizes for the standard pipe ranges. Bespoke spans, splay angles, scour aprons detailed to project requirements. Screens and grilles are supplied by others.
| Variant | Dimensions | Detail | Typical use |
|---|---|---|---|
| Headwall — 600mm (2ft) pipe | 1500 × 1200 × 200mm (4'11" × 3'11" × 8in) | Pipe socket cast in · splayed wings | Field drains, small culverts, ditch crossings |
| Headwall — 900mm (2'11") pipe | 2000 × 1400 × 250mm (6'7" × 4'7" × 10in) | Pipe socket cast in · splayed wings | Standard farm and estate culverts |
| Headwall — 1200mm (3'11") pipe | 2400 × 1600 × 250mm (7'10" × 5'3" × 10in) | Pipe socket cast in · splayed wings | Highway and rural-road culverts |
| Headwall — 1800mm (5'11") pipe | 3200 × 2000 × 300mm (10'6" × 6'7" × 1ft) | Pipe socket cast in · splayed wings | Major culverts, river crossings |
| Headwall — 3000mm (9'10") span | Bespoke to specification | Box culvert outfall · engineer-detailed | River and large drainage outfalls |
| Wing Wall — paired | Bespoke to specification | Cantilever splay · 30°/45°/60° | Embankment retention at outfall |
Detailed against CIRIA C786. The hydraulic design of the outfall is your engineer's. Pipe sockets cast in to suit twin-wall, vitrified clay, ductile iron or concrete spigot.
The range
Headwalls in stock.
Where they go
Common applications.
From a 600mm (2ft) field-drain ditch crossing on a Devon farm to a 3m (9'10") river outfall on an A-road improvement, the engineering is the same — CIRIA C786, properly detailed.
- · Highway and rural-road culvert outfalls (DfT and county standards)
- · Estate and farm ditch crossings under access tracks
- · Pipe outfalls into watercourses (EA discharge consents)
- · SuDS attenuation pond inlets and overflows
- · River training and embankment retention at culverts
- · Utility and infrastructure drainage outfalls
- · Water utility surface-water outfalls
Standards & references
Cast and detailed to current best practice.
- CIRIA C786 (2019, 2024 updates)
- Culvert, screen and outfall manual — UK design reference for headwalls and trash screens.
- DMRB CD 360
- Highway drainage design — culvert and outfall requirements for trunk roads.
- British Standards
- Our products are manufactured in compliance with applicable British Standards. For information regarding the specific standards applicable to a particular product, please contact us.
- EA Land Drainage Byelaws
- Discharge consents, Flood Risk Activity Permits and main-river ordinary watercourses.
Configure your outfall
Send the long-section and pipe size — we will quote it.
Related products
Often ordered alongside.
Ready to specify it?
Send us pipe size, embankment height and the long-section and we will come back to you.