Angled precast headwalls allow pipework entering a watercourse at an angle to be accommodated or for an outfall to be situated on a bend in a river. Please see below details of our range of angled precast concrete headwalls.
We cast the openings in our headwalls to suit your pipe diameter and material. We will also set the invert level of the pipe into the concrete headwall to your specification if required. We can also cast in multiple pipe openings if required.
All our angled precast headwall units can be pre-fitted with a range of accessories such as Kee Klamp® handrails, gratings, flap valves, penstocks and other flow control devices.
Our range of angled precast headwall has been designed to accommodate pipework up to and including 900mm.
The AH4 precast headwalls meet the Environment Agency’s ‘Standard rules SR2015 No 27 – Constructing an outfall pipe of 300mm diameter through a headwall into a main river’ and Exempt flood risk activities: environmental permits section FRA12 ‘Outfall pipes less than 300mm diameter through a headwall’