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:
600mm

Althon H40C Headwalls offer 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.

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 525mm I.D. and plastic pipes up to 600mm 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.

H40C A Headwall

H40C A Headwall

  • Up to 600mm pipework
  • Backwall height 1120mm

 

H40C B Headwall

H40C B Headwall

  • Up to 600mm pipework
  • Backwall height 1425mm

 

H40C C Headwall

H40C C Headwall

  • Up to 600mm pipework
  • Backwall height 1730mm

 

H40C D Headwall

H40C D Headwall

  • Up to 600mm pipework
  • Backwall height 2035mm

 

H40C E Headwall

H40C E Headwall

  • Up to 600mm pipework
  • Backwall height 2340mm