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H20C H Headwall

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H20C H Headwalls are two piece precast concrete headwall structures with rebated joints to be assembled on site around the drainage pipe and locked together by means of stainless steel cast-in sockets and brackets. H20C H Headwalls suit plastic or clay pipes up to 1050mm and concrete pipes up to 1050mm.

H20C H Headwalls have a backwall height of 1650mm. Stainless steel sockets can be cast into the headwall for the attachment of gratings and other factory fitted accessories.

H20C H Headwalls have chamfered wingwalls.

We cast the opening in the back wall of our precast concrete headwalls to suit the pipe diameter and material of the pipe being used. We can cast multiple pipe openings, elliptical, square or rectangular culvert openings into any of our headwalls. We can also cast pipe openings into the wing walls of our headwalls. 

The H20C H Headwall weighs 3460kg / 1730kg per section.

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

H20C H Headwall line drawing
H20C H Headwall
As standard our headwalls have a natural concrete finish.
We can offer coloured headwalls in 4 colours but the final shade is affected by many influences.
Our Headwall Products are available in a range of colours
Natural
Our Headwall Products are available in a range of colours
Cotswold
Our Headwall Products are available in a range of colours
Agate
Our Headwall Products are available in a range of colours
Raven Grey
Our Headwall Products are available in a range of colours
Everglade
Product Name
Max Pipe Opening PCC
Max Pipe Opening Plastic / C'ware
Backwall Height
Approx Headwall Weight (kg)
H20C H Headwall
1050
1050
1650
3460

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    H20C H Headwall + 200mm Flap Valve + Cranked Grating

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    H20C H Headwall + 200mm Flap Valve + 3 Sided Kee Klamp

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    H20C H Headwall + 200mm Flap Valve + 3 Sided Kee Klamp + Cranked Grating

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    H20C H Headwall + 200mm Flap Valve + Backwall Kee Klamp

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    H20C H Headwall + 200mm Flap Valve + Backwall Kee Klamp + Cranked Grating

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    H20C H Headwall + 250mm Flap Valve

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    H20C H Headwall + 250mm Flap Valve + Cranked Grating

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    H20C H Headwall + 250mm Flap Valve + 3 Sided Kee Klamp

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    H20C H Headwall + 250mm Flap Valve + 3 Sided Kee Klamp + Cranked Grating

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    H20C H Headwall + 250mm Flap Valve + Backwall Kee Klamp

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    H20C H Headwall + 250mm Flap Valve + Backwall Kee Klamp + Cranked Grating

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    H20C H Headwall + 300mm Flap Valve

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    H20C H Headwall + 300mm Flap Valve + Cranked Grating

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    H20C H Headwall + 300mm Flap Valve + 3 Sided Kee Klamp

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    H20C H Headwall + 300mm Flap Valve + 3 Sided Kee Klamp + Cranked Grating

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    H20C H Headwall + 300mm Flap Valve + Backwall Kee Klamp

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    H20C H Headwall + 300mm Flap Valve + Backwall Kee Klamp + Cranked Grating

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    H20C H Headwall + 400mm Flap Valve

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    H20C H Headwall + 400mm Flap Valve + Cranked Grating

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    H20C H Headwall + 400mm Flap Valve + 3 Sided Kee Klamp

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    H20C H Headwall + 400mm Flap Valve + 3 Sided Kee Klamp + Cranked Grating

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    H20C H Headwall + 400mm Flap Valve + Backwall Kee Klamp

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    H20C H Headwall + 400mm Flap Valve + Backwall Kee Klamp + Cranked Grating

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    H20C H Headwall + 500mm Flap Valve

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    H20C H Headwall + 500mm Flap Valve + Cranked Grating

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    BIM Objects

    If you cannot find what you are looking for, please either email us or use our Headwall Design Service

    You can select multiple files below to be added to a single zip file, your selections will be retained across different Headwalls

    H20C H Headwall - 750mm ID pipe - 100mm Invert Level

    Example Render

    H20C H Headwall - 750mm ID pipe - 100mm Invert Level render

    IFC Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

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    ADSK Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

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    RFA Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

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    COBie Parameters

    Parameter Name Parameter Value
    NamePrecastConcreteHeadwall_H20CH_750mmIDPipe_100mmIL_AlthonLimited
    CreatedBydrawings@althon.co.uk
    CreatedOn2019-05-10T09:35:00
    Categoryn/a
    DescriptionPrecast Concrete Headwall
    AssetTypeFixed
    Manufacturersales@althon.co.uk
    ModelNumberH20CH
    WarrantyGuarantorPartsn/a
    WarrantyDurationPartsn/a
    WarrantyGuarantorLaborn/a
    WarrantyDurationLaborn/a
    WarrantyDurationUnityear
    ReplacementCostn/a
    ExpectedLife>50
    DurationUnityear
    WarrantyDescriptionn/a
    NominalLength1910
    NominalWidth2025
    NominalHeight1650
    ModelReferencePrecast Concrete Headwall
    Shapen/a
    Size1910 x 2025 x 1650
    ColourLight Grey
    FinishSteel mould concrete finish
    Graden/a
    MaterialConcrete
    Constituentsn/a
    FeaturesLifting sockets cast into the headwall
    AccessibilityPerformancen/a
    CodePerformanceBS EN 15258:2008
    SustainabilityPerformancen/a

    Althon_General Parameters

    Parameter Name Parameter Value
    AuthorAlthon Limited
    BIMObjectNameAlthonLimited_PrecastConcreteHeadwall_H20CH_750mmIDPipe_100mmIL
    Version1
    LastUpdated2019-05-10T09:35:00
    ADSKCompatible2X3
    RevitCompatible2018 +
    ManufactureNameAlthon Limited
    ManufacturerURLwww.althon.co.uk
    NBSDescriptionPrecast concrete headwall unit
    NBSNoten/a
    NBSOfficeMasterTagn/a
    NBSReference45-25-40/305
    NBSTypeIDn/a
    DocumentationLiteraturehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationInstallationGuidehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationTechnicalhttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationCertificatesOn request
    Uniclass2015codePr_20_93_37_65
    Uniclass2015TitlePrecast concrete headwall units
    Uniclass2015VersionProducts v1.13
    AlthonGeneralNotesWe can cast multiple pipe opening, elliptical, square or rectangular culvert openings into any of our headwalls. We can also cast pipe openings into the wing walls of our headwalls.
    AlthonHeadwallInstallationUnits should be bedded on minimum 150mm of semi-dry concrete. Sit the headwall level or with a slight fall 1:50 from pipe to spill mouth.
    AlthonHandlingA. Weight of concrete is based on 2.4 tonne/m³+5% is recommended for sizing lifting equipment B. All lifting points shall be used as specified below - Anchor points & loops C. Unit to be lifted as per lifting diagram
    AlthonConcreteA. Mix ref: Self-compacting DC4/DS4 Mix B. Lifting strength bases on 2 cubes = 20N/mm² C. Characteristic 28 day cube strength = 50N/mm² D. Concrete provides Design Chemical Class 4 (DC4) to special Digest1, Table F2
    AlthonReinforcementA. Reinforcement to BS EN 13369 B. Scheduling, dimensioning, bending & cutting to BS8666 C. Cage to be machine tied with steel wire
    AlthonManufactureA. Manufacture to BS EN 15258:2008 precast concrete products - Retaining wall elements, Factory Production Control certificate number: 0086-CPR-650448 & BS EN 13369 B. Tolerances to BS EN 13369 clause 4.3.1.1 C. Finishing Top: Class A Sides: Class A Base: Class A Rear of back wall: Self-Levelled D. Marking: Units shall be indelibly marked to show: mould reference code De-mould date Job reference number and unique product number unit weight (kg)
    AlthonDesignA. Concrete design to EC2 B. Althon have designed the concrete units only, the site conditions should be assessed for suitability by the scheme designer C. Units are designed to withstand a vertical live load surcharge of 10kN/M² D. Weight of soil - 18kN/M² E. Angle of internal friction = 30 Deg. F. Design Life: >50 years Cover Block Size (mm): All Faces 33 Min Cover Size (mm): All Faces 28 Max Cover Size (mm): All Faces 38 Exposure induced by Carbonation: All Faces XC3/4 Corrosion induced by Chloride: XD2 Freeze/thaw attack: XF3 Chemical attack: XA2
    AlthonFabricationA. Manufacture IAW EN 1090-2 EXC CLASS 1 B. Material grade is to be: BS EN 10025 S275 C. Welding carried out IAW EN 1090-2 PARA 7.5.4 - 7.5.18 D. All fillet and butt welds to have a minimum throat thickness of 6mm & joints to be fully welded where possible. E. Ensure vertical flats are fully welded both sides where possible. F. All sharp edges and burrs are to be removed. G. Remove all weld splatter. H. Holes by punching are permitted with reaming. I. Galvanising is carried out after fabrication to BS EN:ISO 1461
    AlthonSpecificationInformationOpening in back wall cast to suit outside diameter of the pipe work. Invert level of pipe can be set to your specification
    AlthonHeadwallMaxPipeSizeMax Pipe Opening PCC = 1050mm ID and Max Pipe Opening Pastic/Clayware = 1050mm ID

    Built with: Autodesk Inventor Professional 2018

    H20C H Headwall - 900mm ID pipe - 100mm Invert Level

    Example Render

    H20C H Headwall - 900mm ID pipe - 100mm Invert Level render

    IFC Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

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    ADSK Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

    Download ADSK Object

    RFA Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

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    COBie Parameters

    Parameter Name Parameter Value
    NamePrecastConcreteHeadwall_H20CH_900mmIDPipe_100mmIL_AlthonLimited
    CreatedBydrawings@althon.co.uk
    CreatedOn2019-05-10T09:35:00
    Categoryn/a
    DescriptionPrecast Concrete Headwall
    AssetTypeFixed
    Manufacturersales@althon.co.uk
    ModelNumberH20CH
    WarrantyGuarantorPartsn/a
    WarrantyDurationPartsn/a
    WarrantyGuarantorLaborn/a
    WarrantyDurationLaborn/a
    WarrantyDurationUnityear
    ReplacementCostn/a
    ExpectedLife>50
    DurationUnityear
    WarrantyDescriptionn/a
    NominalLength1910
    NominalWidth2025
    NominalHeight1650
    ModelReferencePrecast Concrete Headwall
    Shapen/a
    Size1910 x 2025 x 1650
    ColourLight Grey
    FinishSteel mould concrete finish
    Graden/a
    MaterialConcrete
    Constituentsn/a
    FeaturesLifting sockets cast into the headwall
    AccessibilityPerformancen/a
    CodePerformanceBS EN 15258:2008
    SustainabilityPerformancen/a

    Althon_General Parameters

    Parameter Name Parameter Value
    AuthorAlthon Limited
    BIMObjectNameAlthonLimited_PrecastConcreteHeadwall_H20CH_900mmIDPipe_100mmIL
    Version1
    LastUpdated2019-05-10T09:35:00
    ADSKCompatible2X3
    RevitCompatible2018 +
    ManufactureNameAlthon Limited
    ManufacturerURLwww.althon.co.uk
    NBSDescriptionPrecast concrete headwall unit
    NBSNoten/a
    NBSOfficeMasterTagn/a
    NBSReference45-25-40/305
    NBSTypeIDn/a
    DocumentationLiteraturehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationInstallationGuidehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationTechnicalhttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationCertificatesOn request
    Uniclass2015codePr_20_93_37_65
    Uniclass2015TitlePrecast concrete headwall units
    Uniclass2015VersionProducts v1.13
    AlthonGeneralNotesWe can cast multiple pipe opening, elliptical, square or rectangular culvert openings into any of our headwalls. We can also cast pipe openings into the wing walls of our headwalls.
    AlthonHeadwallInstallationUnits should be bedded on minimum 150mm of semi-dry concrete. Sit the headwall level or with a slight fall 1:50 from pipe to spill mouth.
    AlthonHandlingA. Weight of concrete is based on 2.4 tonne/m³+5% is recommended for sizing lifting equipment B. All lifting points shall be used as specified below - Anchor points & loops C. Unit to be lifted as per lifting diagram
    AlthonConcreteA. Mix ref: Self-compacting DC4/DS4 Mix B. Lifting strength bases on 2 cubes = 20N/mm² C. Characteristic 28 day cube strength = 50N/mm² D. Concrete provides Design Chemical Class 4 (DC4) to special Digest1, Table F2
    AlthonReinforcementA. Reinforcement to BS EN 13369 B. Scheduling, dimensioning, bending & cutting to BS8666 C. Cage to be machine tied with steel wire
    AlthonManufactureA. Manufacture to BS EN 15258:2008 precast concrete products - Retaining wall elements, Factory Production Control certificate number: 0086-CPR-650448 & BS EN 13369 B. Tolerances to BS EN 13369 clause 4.3.1.1 C. Finishing Top: Class A Sides: Class A Base: Class A Rear of back wall: Self-Levelled D. Marking: Units shall be indelibly marked to show: mould reference code De-mould date Job reference number and unique product number unit weight (kg)
    AlthonDesignA. Concrete design to EC2 B. Althon have designed the concrete units only, the site conditions should be assessed for suitability by the scheme designer C. Units are designed to withstand a vertical live load surcharge of 10kN/M² D. Weight of soil - 18kN/M² E. Angle of internal friction = 30 Deg. F. Design Life: >50 years Cover Block Size (mm): All Faces 33 Min Cover Size (mm): All Faces 28 Max Cover Size (mm): All Faces 38 Exposure induced by Carbonation: All Faces XC3/4 Corrosion induced by Chloride: XD2 Freeze/thaw attack: XF3 Chemical attack: XA2
    AlthonFabricationA. Manufacture IAW EN 1090-2 EXC CLASS 1 B. Material grade is to be: BS EN 10025 S275 C. Welding carried out IAW EN 1090-2 PARA 7.5.4 - 7.5.18 D. All fillet and butt welds to have a minimum throat thickness of 6mm & joints to be fully welded where possible. E. Ensure vertical flats are fully welded both sides where possible. F. All sharp edges and burrs are to be removed. G. Remove all weld splatter. H. Holes by punching are permitted with reaming. I. Galvanising is carried out after fabrication to BS EN:ISO 1461
    AlthonSpecificationInformationOpening in back wall cast to suit outside diameter of the pipe work. Invert level of pipe can be set to your specification
    AlthonHeadwallMaxPipeSizeMax Pipe Opening PCC = 1050mm ID and Max Pipe Opening Pastic/Clayware = 1050mm ID

    Built with: Autodesk Inventor Professional 2018

    H20C H Headwall - 1050mm ID pipe - 100mm Invert Level

    Example Render

    H20C H Headwall - 1050mm ID pipe - 100mm Invert Level render

    IFC Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

    Download IFC Object

    ADSK Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

    Download ADSK Object

    RFA Object

    Version: 1
    Last Updated: May 10, 2019, 9:35 a.m.

    Download RFA Object

    COBie Parameters

    Parameter Name Parameter Value
    NamePrecastConcreteHeadwall_H20CH_1050mmIDPipe_100mmIL_AlthonLimited
    CreatedBydrawings@althon.co.uk
    CreatedOn2019-05-10T09:35:00
    Categoryn/a
    DescriptionPrecast Concrete Headwall
    AssetTypeFixed
    Manufacturersales@althon.co.uk
    ModelNumberH20CH
    WarrantyGuarantorPartsn/a
    WarrantyDurationPartsn/a
    WarrantyGuarantorLaborn/a
    WarrantyDurationLaborn/a
    WarrantyDurationUnityear
    ReplacementCostn/a
    ExpectedLife>50
    DurationUnityear
    WarrantyDescriptionn/a
    NominalLength1910
    NominalWidth2025
    NominalHeight1650
    ModelReferencePrecast Concrete Headwall
    Shapen/a
    Size1910 x 2025 x 1650
    ColourLight Grey
    FinishSteel mould concrete finish
    Graden/a
    MaterialConcrete
    Constituentsn/a
    FeaturesLifting sockets cast into the headwall
    AccessibilityPerformancen/a
    CodePerformanceBS EN 15258:2008
    SustainabilityPerformancen/a

    Althon_General Parameters

    Parameter Name Parameter Value
    AuthorAlthon Limited
    BIMObjectNameAlthonLimited_PrecastConcreteHeadwall_H20CH_1050mmIDPipe_100mmIL
    Version1
    LastUpdated2019-05-10T09:35:00
    ADSKCompatible2X3
    RevitCompatible2018 +
    ManufactureNameAlthon Limited
    ManufacturerURLwww.althon.co.uk
    NBSDescriptionPrecast concrete headwall unit
    NBSNoten/a
    NBSOfficeMasterTagn/a
    NBSReference45-25-40/305
    NBSTypeIDn/a
    DocumentationLiteraturehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationInstallationGuidehttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationTechnicalhttps://www.althon.co.uk/products/h20c-h-headwall/detail/
    DocumentationCertificatesOn request
    Uniclass2015codePr_20_93_37_65
    Uniclass2015TitlePrecast concrete headwall units
    Uniclass2015VersionProducts v1.13
    AlthonGeneralNotesWe can cast multiple pipe opening, elliptical, square or rectangular culvert openings into any of our headwalls. We can also cast pipe openings into the wing walls of our headwalls.
    AlthonHeadwallInstallationUnits should be bedded on minimum 150mm of semi-dry concrete. Sit the headwall level or with a slight fall 1:50 from pipe to spill mouth.
    AlthonHandlingA. Weight of concrete is based on 2.4 tonne/m³+5% is recommended for sizing lifting equipment B. All lifting points shall be used as specified below - Anchor points & loops C. Unit to be lifted as per lifting diagram
    AlthonConcreteA. Mix ref: Self-compacting DC4/DS4 Mix B. Lifting strength bases on 2 cubes = 20N/mm² C. Characteristic 28 day cube strength = 50N/mm² D. Concrete provides Design Chemical Class 4 (DC4) to special Digest1, Table F2
    AlthonReinforcementA. Reinforcement to BS EN 13369 B. Scheduling, dimensioning, bending & cutting to BS8666 C. Cage to be machine tied with steel wire
    AlthonManufactureA. Manufacture to BS EN 15258:2008 precast concrete products - Retaining wall elements, Factory Production Control certificate number: 0086-CPR-650448 & BS EN 13369 B. Tolerances to BS EN 13369 clause 4.3.1.1 C. Finishing Top: Class A Sides: Class A Base: Class A Rear of back wall: Self-Levelled D. Marking: Units shall be indelibly marked to show: mould reference code De-mould date Job reference number and unique product number unit weight (kg)
    AlthonDesignA. Concrete design to EC2 B. Althon have designed the concrete units only, the site conditions should be assessed for suitability by the scheme designer C. Units are designed to withstand a vertical live load surcharge of 10kN/M² D. Weight of soil - 18kN/M² E. Angle of internal friction = 30 Deg. F. Design Life: >50 years Cover Block Size (mm): All Faces 33 Min Cover Size (mm): All Faces 28 Max Cover Size (mm): All Faces 38 Exposure induced by Carbonation: All Faces XC3/4 Corrosion induced by Chloride: XD2 Freeze/thaw attack: XF3 Chemical attack: XA2
    AlthonFabricationA. Manufacture IAW EN 1090-2 EXC CLASS 1 B. Material grade is to be: BS EN 10025 S275 C. Welding carried out IAW EN 1090-2 PARA 7.5.4 - 7.5.18 D. All fillet and butt welds to have a minimum throat thickness of 6mm & joints to be fully welded where possible. E. Ensure vertical flats are fully welded both sides where possible. F. All sharp edges and burrs are to be removed. G. Remove all weld splatter. H. Holes by punching are permitted with reaming. I. Galvanising is carried out after fabrication to BS EN:ISO 1461
    AlthonSpecificationInformationOpening in back wall cast to suit outside diameter of the pipe work. Invert level of pipe can be set to your specification
    AlthonHeadwallMaxPipeSizeMax Pipe Opening PCC = 1050mm ID and Max Pipe Opening Pastic/Clayware = 1050mm ID

    Built with: Autodesk Inventor Professional 2018

    Brochures, Datasheets and Installation Instructions for H20C H Headwall

    H20C Datasheet and Installation Guide

    Download

    Standard Headwall Range

    Download

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    As Revit geometry (simple solid) to a Revit Family (.RFA)

    As an Autodesk Exchange File (.ADSK)

    As an Industry Foundation Classes (.IFC) file. Inventor provides IFC2x3 output