Althon culvert headwalls recess the inflow and outflow at the end of the pipe or culvert into the slope to improve entrance flow conditions, and to anchor the pipe and prevent disjointing due to excessive velocities.

The Althon culvert headwall 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. Lifting points are 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.

Althon Culvert 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.