Headwalls with V Notch Weir Panels 

Did you know Althon have can manufactured precast headwalls with precast concrete V notch weirs on the spillway?! 

A V notch weir is where the physical barrier is significantly higher than the water level except for a specific V notch cut into the precast panel on the spillway of the headwall.

The V notch weir is a secondary casting and is cast to suit your specific requirements.  We are also able to cast in a galvanised mild steel or stainless steel sharp edged V notch weirs if required.  At times of normal flow all the water must pass through the V notch weir panel simplifying flow volume calculations

We can assist by providing CAD and PDF drawings of headwalls with V notch weir panels on request.

You can use our Headwall Specifier to find the headwall you require. We can then assist with pricing and design drawings detailing an appropriate V notch weir based on pipe diameter.

You can also visit the Precast Headwalls section of our website

BIM Objects

Althon have recently started creating a BIM library of our precast concrete headwalls. The headwall models will be available in file formats Revit, IFC and ADSK with 3 pipe connectors per headwall design. All of our headwall models come under the Uniclass 2015 code PR_20_93_37 Precast Concrete Headwall Units and OmniClass Number 23.10.00.00 Site Products. We can also provide 3D models in other file formats on request.

If you cannot see the headwall you are looking for or have a certain headwall in mind that you require as a BIM object or 3D model please email us at sales@althon.co.uk

Beccles Southern Relief Road

Althon have recently supplied over 20 headwalls to the Beccles Southern Relief road which stretches from London Road (A145) to Ellough Road (C969). The road was built by Jacksons Civil Engineering and will lower the impact of HGVs in Beccles, providing them with an alternate route around the town.

Althon precast concrete headwalls supplied to the new relief road range from our smaller H3C concrete headwalls for 150mm dia pipes to our H10CA headwalls to suit 600mm dia pipes, factory fitted with a galvanised steel close coupled grating.

For more information please visit the Headwalls section of our website or speak to a member of our sales team on 01603 488700 or email us at sales@althon.co.uk

Box Culvert Headwalls

Althon has new range of precast concrete Box Culvert Headwalls to suit a maximum internal box culvert of 2650mm wide x 1750mm high. All of our CSP Culvert headwalls can be factory fitted with gratings, flap valves, Kee Klamp® handrail, penstocks and other flow control devices. Toe depths are also available up to 1000mm and come in thickness of 300 or 500mm.

Please visit the Precast Headwalls for Culverts  section of our website for more information or Precast Concrete Headwalls for our entire headwall range. For pricing please contact our sales team by email sales@althon.co.uk or by telephone on 01603 488700

Sewers for Adoption (SFA6) Headwalls

In response to customers requesting ‘Sewers for Adoption’ compliant Headwalls with a smaller footprint than our SFA10 Headwall for pipes up to & including 300mm ID, Althon have introduced the SFA6 Headwall range.  The SFA6 is available in three back wall heights & therefore three wing wall profiles & will accommodate pipework up to & including 300mm ID.  Toe depths of up to 1000mm are available in both 500 & 300mm thicknesses. Like all our other Headwalls these units can be factory fitted with Gratings, Flap Valves, Genuine Kee Klamp Handrail, Penstocks and other flow control devices. 

Please visit the Sewer for Adoption Headwalls section of our website for more information or for pricing please contact our sales team by email sales@althon.co.uk or by telephone on 01603 488700