AH4C C LH Angled Headwall

The AH4CC Headwall is a two part Pcc Headwall that allows water to discharge at a 45 Deg. angle, the Environment Agency’s preferred method when discharging into a watercourse.  The AH4CC headwall fully meets the Environment Agency’s ‘Standard rules SR2015 No 27 – Constructing an outfall pipe of 300mm diameter through a headwall into a main river’ & Exempt flood risk activities: environmental permits section FRA12 ‘Outfall pipes less than 300mm diameter through a headwall’.

The AH4CC is available with a backwall height of 950mm and three different toe depths for Twin Wall or Clay Pipes up to & including 300mm ID.  Having a separate toe makes it easier to handle and more importantly ensures the foundation around the toe and beneath the Headwall structure can be well compacted.

AH4C LH Angled Headwall Range Max Pipe Opening (I.D) Plastic/C'ware Max Pipe Opening (I.D) PCC A mm B mm Approx Weight (kg)
AH4CC LH No Toe 300 225 950 0 550 CAD & PDF Details
AH4CC LH 450mm Toe 300 225 950 450 970 CAD & PDF Details
AH4CC LH 700mm Toe 300 225 950 700 1205 CAD & PDF Details
AH4CC LH 1000mm Toe 300 225 950 1000 1485 CAD & PDF Details

Althon 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.

Sales Team: 01603 488700

Email: sales@althon.co.uk