Precast Concrete Headwalls

Headwalls

Althon manufacture the largest range of precast concrete headwalls in the UK for pipes, culverts and box culverts.

Headwalls are an important part of most SUDS drainage schemes, preventing erosion at the point of discharge into watercourses such as attenuation ponds, detention basins, rivers, ditches and swales.

Headwall Accessories

All models can be factory fitted with a range of accessories such as flap valves, penstocks, Kee Klamp® handrails as well as a selection of gratings and ladders and other flow control methods such as dissipation blocks and cascade panels.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email sales@althon.co.uk

Headwall Specification Tool

Headwall Specification Tool

Use the Althon Headwall Specification Tool to help find the most suitable model and accessories for your project

BIM Available
Standard Precast Concrete Headwalls

Standard Precast Concrete Headwalls

Althon offer a cost effective alternative to in-situ structures for connecting pipework discharging into open water courses

BIM Available
Sewers for Adoption (SFA) Headwalls

Sewers for Adoption (SFA) Headwalls

Precast Concrete Headwalls designed to comply with ‘Sewers for Adoption’ guidelines

BIM Available
Rectangular Sewers for Adoption (RSFA) Concrete Headwalls

Rectangular Sewers for Adoption (RSFA) Concrete Headwalls

Althon RSFA Rectangular Precast Concrete Outfalls comply with Sewers for Adoption guidelines

BIM Available
Angled Precast Headwalls

Angled Precast Headwalls

Angled Precast Concrete Outfalls allow pipework entering a watercourse at an angle to be accommodated or for an Outfall to be situated on a bend in a river

BIM Available
Rectangular Headwall Range

Rectangular Headwall Range

Rectangular precast concrete outfalls with toe extensions to suit pipework up to 750mm ID

Culvert Headwalls

Culvert Headwalls

Althon Precast Box Culvert Outfalls are sectional in structure with rebated joints. This allows assembly on site around the box culvert

Precast Headwalls with Penstocks

Precast Headwalls with Penstocks

Precast concrete outfalls with factory fitted HDPE/8SS316L penstocks from 100mm - 1500mm as standard

Splayed Wing Wall Headwalls

Splayed Wing Wall Headwalls

Althon's SP range of precast ‘Splayed Wing Wall ’ outfalls are produced with a higher wing wall at the front of the apron

SFA Headwalls with Precast Steps

SFA Headwalls with Precast Steps

Althon SFA Precast Concrete Outfalls with Precast Steps and Handrails comply with the Sewers for Adoption 7th Edition guidelines

BIM Available
Swale Inlet Headwall Range

Swale Inlet Headwall Range

  • To suit up to 600mm pipework
  • Option for factory fitted with inline non-return valves

Althon Headwall Drainage Standards & Guidelines

  • Designed to BS EN 1992-1-1 (EC2) standards
  • Manufactured to BS EN 15258 & BS EN 13369 standards
  • Severn Trent Water specifications for rectangular precast outfalls
  • Anglian Water approved headwalls
  • Angled ranges that meets the Environment Agency’s ‘Standard rules SR2015 No 27’
  • Selected ranges meet the Sewers for Adoption 7th Edition guidelines to be adopted by local Water Authorities & comply with the Water Industry Regulations 2011