AH12C E LH Angled Headwall

SSG Compliant

BIM Available

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AH12CE Left Hand Angled precast headwalls are two part precast concrete headwalls that allow water to discharge at a 45 Degree angle. This is the Environment Agency’s preferred method when discharging into a watercourse. The AH12C E Left Hand Angled headwall has a backwall height of 1550mm and is suitable for use with plastic, clay or concrete pipework up to 900mm. We can supply toe extension pieces in 3 depths up to 1000mm.

The AH12C E Left Hand Angled headwalls have horizontal wingwalls.

AH12C angled precast headwall units can be pre-fitted with a range of accessories such as Kee Klamp® handrails, gratings, flap valves, penstocks and other flow control devices. The AH12C E Left Hand Angled Headwall weighs 3980kg.

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

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

Cotswold

Agate

Raven Grey

Everglade

Product Name

Max Pipe Opening PCC

Max Pipe Opening Plastic / C'ware

Backwall Height

Approx Headwall Weight (kg)

AH12C E LH Angled Headwall

900

1550

3980

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AH12C E LH Angled Headwall + Closed Coupled Grating

Parameter Name	Parameter Value
Name	PrecastConcreteHeadwall_AH12CELH_750mmIDPipe_150mmIL_AlthonLimited
CreatedBy	drawings@althon.co.uk
CreatedOn	2019-05-09T11:30:00
Category	n/a
Description	Precast Concrete Headwall
AssetType	Fixed
Manufacturer	sales@althon.co.uk
ModelNumber	AH12CE LH
WarrantyGuarantorParts	sales@althon.co.uk
WarrantyDurationParts	n/a
WarrantyGuarantorLabor	n/a
WarrantyDurationLabor	n/a
WarrantyDurationUnit	year
ReplacementCost	n/a
ExpectedLife	>100
DurationUnit	year
WarrantyDescription	n/a
NominalLength	2835
NominalWidth	1200
NominalHeight	1550
ModelReference	Precast Concrete Headwall
Shape	n/a
Size	2835 x 1200 x 1500
Colour	Light Grey
Finish	Steel mould concrete finish
Grade	n/a
Material	Concrete
Constituents	n/a
Features	Lifting points cast into headwall
AccessibilityPerformance	n/a
CodePerformance	BS EN 15258:2008
SustainabilityPerformance	n/a

Parameter Name	Parameter Value
Author	Althon Limited
BIMObjectName	AlthonLimited_PrecastConcreteHeadwall_AH12CELH_750mmIDPipe_150mmIL
Version	1
LastUpdated	2019-05-09T11:30:00
ADSKCompatible	2X3
RevitCompatible	2018 +
ManufactureName	Althon Limited
ManufacturerURL	www.althon.co.uk
NBSDescription	Precast concrete headwall unit
NBSNote	n/a
NBSOfficeMasterTag	n/a
NBSReference	45-25-40/305
NBSTypeID	n/a
DocumentationLiterature	https://www.althon.co.uk/products/ah12c-e-lh-angled-headwall/detail/
DocumentationInstallationGuide	https://www.althon.co.uk/products/ah12c-e-lh-angled-headwall/detail/
DocumentationTechnical	https://www.althon.co.uk/products/ah12c-e-lh-angled-headwall/detail/
DocumentationCertificates	On request
Uniclass2015code	Pr_20_93_37_65
Uniclass2015Title	Precast concrete headwall units
Uniclass2015Version	Products v1.13
AlthonGeneralNotes	We 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.
AlthonHeadwallInstallation	Units should be bedded on minimum 200mm thick well compacted Class 6A* selected well graded granular material. *Manual of contract documents for Highway Works: Volume (MCHW1) specification for Highway Works, Series 600 (Nov.09). Sit the headwall level or with a slight fall 1:50 from pipe to spill mouth.
AlthonHandling	A. 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 C. Unit to be lifted as per lifting diagram
AlthonConcrete	A. 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
AlthonReinforcement	A. Reinforcement to BS EN 13369 B. Scheduling, dimensioning, bending & cutting to BS8666 C. Cage to be machine tied with steel wire
AlthonManufacture	A. 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)
AlthonDesign	A. 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: >100 years Cover Block Size (mm): All Faces 55 Min Cover Size (mm): All Faces 55 Max Cover Size (mm): All Faces 60 Exposure induced by Carbonation: All Faces XC3/4 Corrosion induced by Chloride: XD3 Freeze/thaw attack: XF4 Chemical attack: XA3
AlthonFabrication	A. 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
AlthonSpecificationInformation	Opening in back wall cast to suit outside diameter of the pipe work. Invert level of pipe can be set to your specification
AlthonHeadwallMaxPipeSize	Max Pipe Opening PCC = 900mm ID and Max Pipe Opening Pastic/Clayware = 900mm ID
AlthonToeInformation	Our AH12C headwall range is available with toe extensions either 300 or 500mm thick with depths ranging from 400 to 1000mm.

Parameter Name	Parameter Value
Name	PrecastConcreteHeadwall_AH12CELH_825mmIDPipe_150mmIL_AlthonLimited
CreatedBy	drawings@althon.co.uk
CreatedOn	2019-05-09T11:30:00
Category	n/a
Description	Precast Concrete Headwall
AssetType	Fixed
Manufacturer	sales@althon.co.uk
ModelNumber	AH12CE LH
WarrantyGuarantorParts	sales@althon.co.uk
WarrantyDurationParts	n/a
WarrantyGuarantorLabor	n/a
WarrantyDurationLabor	n/a
WarrantyDurationUnit	year
ReplacementCost	n/a
ExpectedLife	>100
DurationUnit	year
WarrantyDescription	n/a
NominalLength	2835
NominalWidth	1200
NominalHeight	1550
ModelReference	Precast Concrete Headwall
Shape	n/a
Size	2835 x 1200 x 1500
Colour	Light Grey
Finish	Steel mould concrete finish
Grade	n/a
Material	Concrete
Constituents	n/a
Features	Lifting points cast into headwall
AccessibilityPerformance	n/a
CodePerformance	BS EN 15258:2008
SustainabilityPerformance	n/a

Parameter Name	Parameter Value
Name	PrecastConcreteHeadwall_AH12CELH_900mmIDPipe_150mmIL_AlthonLimited
CreatedBy	drawings@althon.co.uk
CreatedOn	2019-05-09T11:30:00
Category	n/a
Description	Precast Concrete Headwall
AssetType	Fixed
Manufacturer	sales@althon.co.uk
ModelNumber	AH12CE LH
WarrantyGuarantorParts	sales@althon.co.uk
WarrantyDurationParts	n/a
WarrantyGuarantorLabor	n/a
WarrantyDurationLabor	n/a
WarrantyDurationUnit	year
ReplacementCost	n/a
ExpectedLife	>100
DurationUnit	year
WarrantyDescription	n/a
NominalLength	2835
NominalWidth	1200
NominalHeight	1550
ModelReference	Precast Concrete Headwall
Shape	n/a
Size	2835 x 1200 x 1500
Colour	Light Grey
Finish	Steel mould concrete finish
Grade	n/a
Material	Concrete
Constituents	n/a
Features	Lifting points cast into headwall
AccessibilityPerformance	n/a
CodePerformance	BS EN 15258:2008
SustainabilityPerformance	n/a

AH12C E LH Angled Headwall

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