Althon Sewers for Adoption (SFA) precast concrete headwalls are suitable for connecting pipework to open watercourses, and designed for compliance with Sewerage Sector Guidance and Section 104 Agreements. The range supports single or multiple pipe openings, pipe sizes up to 1500mm, and various backwall heights and toe depths, with options for integrated fixings for safety and flow control accessories.

Precast concrete headwalls for pipe outfalls to watercourses, compliant with Sewers for Adoption guidelines
Backwall heights from 800 to 2350mm and toe depths from 450 to 1000mm
Supports pipe diameters up to 1500mm, with single or multiple pipe openings
Customisable with cast-in fixings for gratings, trash screens, flap valves, penstocks, ladders, handrails and monitoring equipment
Available with safety grilles and toe extensions of 300 or 500mm thickness
BIM files and datasheets available for design integration

Applications

Adoptable sewer outfalls to open watercourses
Drainage infrastructure for new developments
Water company Section 104 Agreement projects
Flood management and surface water discharge
Retrofitting or upgrading existing outfall structures

Dimensions

Backwall height: 800-2350mm

Toe depth: 450-1000mm

Maximum pipe size: 1500mm

Options and variations

Single or multiple pipe openings

Four model sizes with three toe depths and four backwall heights

Cast-in fixings for accessories

Safety grilles and handrails available

Accreditations

Sewerage Sector Guidance compliant

Sewers for Adoption 7th Edition compliant

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