Althon Rectangular Precast Headwalls are Sewers for Adoption compliant precast concrete headwalls for outfalls discharging into ponds, swales, ditches beaches and rivers. RSFA precast headwalls come with the option of two thicknesses of toe, 300mm and 500mm, each of which is available in three depths. Althon manufacture RSFA precast headwalls with three different wall profiles to suit the gradient of the bank as follows 1 : 1 slope, 1 : 2 slope and 1 : 3 slope. RSFA precast concrete headwalls are typically supplied complete with Kee Klamp® Handrail to the back wall and horizontal sections of the wing walls, a galvanised steel access ladder and a self-closing gate with padlock facility above.

The backwall of the headwall can accommodate a correctly sized Sewers for Adoption compliant hinged outfall safety grille. Althon RSFA precast headwalls are manufactured in accordance with Severn Trent Water Standard detail STD6002 for pipework up to 600mm All RSFA Headwalls are cast with the opening in the back wall to suit the size and type of pipe being used at the invert level required.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email sales@althon.co.uk

RSFA11 Rectangular Headwall Range

RSFA11 Rectangular Headwall Range

  • Pipes up to 225mm ID 
  • 600mm Internal back wall height 
RSFA12 Rectangular Headwall Range

RSFA12 Rectangular Headwall Range

  • Pipes up to 225mm ID 
  • Straight & Angled units available 
RSFA18 Rectangular Headwall Range

RSFA18 Rectangular Headwall Range

  • Pipes up to 450mm ID 
  • Straight & Angled units available 
RSFA20 Rectangular Headwall Range

RSFA20 Rectangular Headwall Range

  • Pipes up to 600mm ID 
  • Straight & Angled units available