Region: AU  CN Asia

Civil drainage

Civil Drainage

Civil Drainage

Webforge supplies a complete range of Mild Steel Grates and Ductile Iron Access Covers, which comply with the requirements of AS3996.  

Webforge combines the efficiency of standard products available for fast delivery with a customised service. Drainage grates can be custom manufactured to your exact requirements, while still offering acceptable lead times, due to local manufacture.

Talk to your local representative about your requirements, Webforge can provide you with an estimate and drawing for approval prior to manufacture, and still work within tight project deadlines.

CivilSpec Online Specification
CivilSpec is our online specification tool.  It will guide you through the selection process to identify the drainage grate, access cover  or channel you need.

Visit our Youtube page, for a quick instructional video on how to use CivilSpec.


Webforge has the capability to manufacture and test grates and access covers in-house, to ensure compliance with the load and permanent set requirements specified in AS3996. Both stock and custom products can be tested against applicable standards in our NATA accredited in-house testing facility.

Australian Standard AS3996:

The Australian standard sets out strength classifications and the loading conditions applying to these classifications. This provides a good guide for your project's requirements.

  • Class A - Test Load 10kN
    Footways and areas accessible only to pedestrians and pedal cyclists (Extra-light Duty).
  • Class B - Test Load 80kN
    Footways that may be mounted by a vehicle or livestock, and light tractor paths (Light Duty).
  • Class C - Test Load 150kN
    Malls and pedestrian areas open to slow moving commercial vehicles (Medium Duty).
  • Class D - Test Load 210kN
    Carriageways of roads and areas open to commercial vehicles (Heavy Duty).

Webforge can supply mild steel grates to meet Class E requirements; for extreme heavy duty applications. Talk to your sales representative about your project.

Other requirements of AS3996
In addition to strength, AS3996 outlines requirements for gas and water tightness, keyhole dimensions, grate bicycle safety, identification markings, frame dimensions, etc. Talk to your Webforge sales representative about your project requirements.

Specifying access cover and drainage grate sizes

The industry convention is to identify the size of access covers and drainage grates by specifying the internal clear opening dimensions of the frame. For circular covers this dimension is measured as a diameter. For square and rectangular covers, the normal convention is Width x Length (W x L).

New Lightweight Range

Webforge are pleased to introduce a new range of "Lightweight" grates and access covers.  The new covers still meet AS3996 classification requirements, and are up to 37% lighter than traditional drain grates and covers.  

The OH&S benefits of lighter grates are evident throughout the delivery chain, for logistics and installation personnel.

Download our new Civil brochure for more information.

Grate Weight Comparison

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Webforge Asia operates throughout the Asia Pacific region in locations such as  India, New ZealandSingapore, Philippines, Indonesia, Thailand, Vietnam, Malaysia, China, and Australia.