Civil Drainage Products from Webforge
Webforge supplies a complete range of Mild Steel Grates and Ductile Iron Access Covers for drainage applications, which comply with the requirements of AS3996.
Webforge combines the efficiency of standard products available for fast delivery with a customised service. Civil 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.
Civil Drainage Testing Available from Webforge
Webforge Asia has the capability to manufacture and test civil drainage grates and access covers in-house, to ensure compliance with the load and permanent set requirements specified in AS3996. Both stock and custom drainage 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 Asia 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 Webforge civil drainage 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).