A one-piece glass reinforced cement (GRC) headwall with an opening to suit 150mm diameter pipes and knockout webs to enlarge to 225mm and 300mm diameter pipes. Stainless steel sockets are provided for the attachment of gratings. The dimensions of the unit are as the H3C PCC unit on page 3 with a reduced toe depth of 150mm and nominal wall thickness of 20mm.
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.
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