Headwall Selector |
Please note when reviewing this information openings shown on illustrations for pipe entry are indicative only. See tables for maximum opening sizes. If a Penstock or Flap Valve is to be fitted to the Headwall, the frame size will determine the maximum pipe diameter that can be accommodated - please contact the Althon Sales Office (01603 488700) for details. Althon Headwall H3C Approximate weight 540kg. A one-piece reinforced concrete headwall to suit Plastic or Clayware pipes up to 300mm I.D. or PCC pipes up to 225mm I.D. Stainless steel sockets are provided for the attachment of gratings. Lifting points are cast in to each Wingwall for safe handling using Althon Lifting Clutches.
Althon Headwall H10C
Toe extension pieces are available for the H10C Headwall giving an overall Toe depth of 710mm or 1015mm from the splashplate.
These headwalls allow pipework entering a watercourse at an angle to be accommodated or for an Outfall to be sited on a bend in a river. The toe is cast separately and is available in depths of 305, 610, 915, 1220 or 1420mm dependant on site conditions. The toe is fixed to the underside of the Headwall with 5 Stainless Steel Bolts which are fastened from the top and are hidden in a recess cast into the splashplate.
This is a sectional structure with rebated joint, assembled on site around the drainage pipe and locked together by means of stainless steel cast-in sockets and brackets provided. The H20C Headwall is suitable for plastic or clayware pipes up to 1650mm I.D. or PCC pipes up to 1500mmI.D. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system.
 This is a sectional
Althon Headwall H28C
This is a sectional structure with rebated joint, assembled on site around the drainage pipe and locked together by means of stainless steel cast-in sockets and brackets provided. The H28C Headwall is suitable for plastic or clayware pipes up to 1650mm I.D. or PCC pipes up to 1500mmI.D. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system.
Althon Culvert Headwall CH20C
Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system.
The H28C Headwall is suitable for plastic pipes up to and including 1650mm ID or PCC Pipes up to and including 1500mm ID. This headwall will also accommodate Twin pipe openings of up to and including 1050mm ID plastic and 900mm ID PCC. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system. This is a sectional structure with rebated joint, assembled on site around the box culvert and locked together by means of stainless steel cast-in sockets and brackets provided. The Althon Culvert Headwall CH28C will accommodate culverts with a maximum internal dimension of 2400mm wide x 1500mm high. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system.
The largest unit can accommodate PCC Pipes up to 1050mm I.D. and Plastic Pipes up to 1200mm I.D. Stainless steel sockets are provided for the attachment of Gratings. Lifting points are cast in to each Wingwall for safe handling using Althon Lifting Clutches. Galvanised Mild Steel Angle can be fitted to the side walls in order to fit Stoplogs and the back wall can be extended horizontally through the fitting of side wall extensions if required.
Althon Headwall H42C Series Approximate weight 810 – 1550kg
This unit can accommodate Pcc, Plastic and Clayware Pipes up to 750mm I.D. Lifting points are cast into both Wingwalls for safe handling using Althon Lifting Clutches. Galvanised Mild Steel Angle can be fitted to the side walls in order to fit Stoplogs and the backwall can be extended horizontally through the fitting of side wall extensions if required.
Approximate weight 990 – 1730kg A one-piece reinforced concrete headwall available in five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to fit suitable brackets to attach ground anchors. This unit can accommodate Pcc Pipes up to 1050mm I.D. and Plastic and Clayware Pipes up to 1200mm I.D. Lifting points are cast into both Wingwalls for safe handling using Althon Lifting Clutches. Galvanised Mild Steel Angle can be fitted to the side walls in order to fit Stoplogs and the backwall can be extended horizontally through the fitting of side wall extensions if required. |
A one-piece reinforced concrete headwall to suit Plastic or Clayware pipes up to 500mm I.D. or PCC pipes up to 450mm I.D. Available with three standard backwall heights, 1.1m, 1.5m and 2m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system.
A one-piece reinforced concrete headwall to suit Plastic, Clayware or PCC pipes up to 900mm I.D. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. A spreader bar is also recommended for safe Handling. The chains are threaded through this eliminating side load on the vertical lift. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system. 
A one-piece reinforced concrete headwall to suit Plastic, Clayware or PCC Pipes up to 900mm I.D. Available with three standard backwall heights, 1.25m, 1.65m and 2.1m, with Lifting points cast in to each Wingwall for safe handling using Althon Lifting Clutches. A spreader bar is also recommended for safe handling. The chains are threaded through this eliminating side load on the vertical lift. Stainless steel sockets are provided for the attachment of Gratings and special brackets are available for use with the anchorage system. 
This is a sectional structure with rebated joint, assembled on site around the box culvert and locked together by means of stainless steel cast-in sockets and brackets provided. The Althon Culvert Headwall CH20C will accommodate box culverts with a maximum internal dimension of 1500mm wide x 1500mm high. 
Culvert Headwall CH28C
A one-piece reinforced concrete headwall available in three widths and five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to fit suitable brackets to attach ground anchors.
A one-piece reinforced concrete headwall available in five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to fit suitable brackets to attach ground anchors. 
Althon Headwall H44C Series