Backwall Height

Backwall heights: 1250mm - 2130mm

Single culvert opening

Single culvert opening

Specifiable invert levels

Specifiable pipe invert levels

Maximum culvert opening size

Maximum culvert opening:
1500mm x 1500mm

This is a sectional structure with rebated joint, assembled on site around the box culvert and locked together by means of stainless steel cast-in sockets and brackets provided. The Althon Culvert Headwall CH20C will accommodate box culverts with a maximum internal dimension of 1500mm wide x 1500mm high. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with lifting points cast in to each wingwall for safe handling using Althon lifting clutches. Stainless steel sockets are provided for the attachment of gratings and special brackets are available for use with the anchorage system.                                                        

CH20C A Culvert Headwall

CH20C A Culvert Headwall

  • Up to 1500 x 800 Culvert Openings
  • Backwall Height 1250mm
CH20C B Culvert Headwall

CH20C B Culvert Headwall

  • Up to 1500 x 1200 Culvert Openings
  • Backwall Height 1650mm
CH20C C Culvert Headwall

CH20C C Culvert Headwall

  • Up to 1500 x 1500 Culvert Openings
  • Backwall Height 2130mm
CH20C D Culvert Headwall

CH20C D Culvert Headwall

  • Up to 1500 x 800 Culvert Openings
  • Backwall Height 1250mm
CH20C E Culvert Headwall

CH20C E Culvert Headwall

  • Up to 1500 x 1200 Culvert Openings
  • Backwall Height 1650mm
CH20C F Culvert Headwall

CH20C F Culvert Headwall

  • Up to 1500 x 1500 Culvert Openings
  • Backwall Height 2130mm
CH20C G Culvert Headwall

CH20C G Culvert Headwall

  • Up to 1500 x 800 Culvert Openings
  • Backwall Height 1250mm
CH20C H Culvert Headwall

CH20C H Culvert Headwall

  • Up to 1500 x 1200 Culvert Openings
  • Backwall Height 1650mm
CH20C I Culvert Headwall

CH20C I Culvert Headwall

  • Up to 1500 x 1500 Culvert Openings
  • Backwall Height 2130mm