Backwall Height

Backwall heights: 1120mm - 2340mm

Single or Multiple Pipe openings

Single or multiple pipe openings

Specifiable invert levels

Specifiable pipe invert levels

Maximum pipe size

Maximum pipe size:
750mm

The Althon H42C Headwall range offers a cost effective alternative to in-situ structures for connecting pipework discharging into open water courses.

All drainage pipes discharging into open watercourses, such as swales, ditches, ponds and rivers, should be fitted with an appropriate Althon headwall.

The H42C is a  one-piece reinforced concrete headwall available in three widths and five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to fit suitable brackets to attach ground anchors. The largest unit can accommodate PCC pipes up to 750mm I.D. and plastic pipes up to 750mm I.D. Stainless steel sockets are provided for the attachment of gratings. Lifting points are cast in to each wingwall for safe handling using Althon lifting clutches. Galvanised mild steel angle can be fitted to the side walls in order to fit stoplogs and the back wall can be extended horizontally through the fitting of side wall extensions if required.

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

H42C A Headwall

H42C A Headwall

  • Up to 600mm Pipework
  • 1120mm Backwall Height
H42C B Headwall

H42C B Headwall

  • Up to 750mm Pipework
  • 1425mm Backwall Height
H42C C Headwall

H42C C Headwall

  • Up to 750mm Pipework
  • 1730mm Backwall Height
H42C D Headwall

H42C D Headwall

  • Up to 750mm Pipework
  • 2035mm Backwall Height
H42C E Headwall

H42C E Headwall

  • Up to 750mm Pipework
  • 2340mm Backwall Height