Trench Grates
Trench Grates
Civilcast galvanised trench grates, part of Civilcast's galvanised steel grate range, are zinc-coated steel grates used for water drainage and management across civil and commercial sites. The galvanisation process improves corrosion resistance and extends service life, even in harsh environmental conditions. They are available in Class B, for private and shared residential property, driveways, footways, low-speed unit sites, parklands and car parks, and Class D, for major roads, freeway and motorway shoulders, warehouses and loading docks, both compliant with AS3996-2019. Civilcast supplies and installs trench grates on projects across NSW, VIC, QLD and ACT. Each frame runs 2 metres long with 1-metre grate inserts and can be cut to 1-metre increments on site, and stainless steel options are available for higher-corrosion applications.
Features
Civilcast Trench Grates are built on a galvanised steel base engineered for corrosion resistance, with load ratings and standards compliance that scale from residential footways through to major roads. The 2-metre frame is designed to be cut on site, and a stainless steel option extends the range into higher-corrosion environments — see the advantages of galvanised steel grates for why galvanising is the standard choice for most sites.
- Galvanised steel with zinc coating for corrosion resistance
- Class B and Class D load ratings
- AS3996-2019 compliant
- 2m frame, cuttable on site in 1m increments
- Stainless steel option available
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Benefits
Trench Grates are designed to reduce cost and friction at three different points in a project: lower corrosion cuts whole-of-life replacement costs (see how tough galvanised mild steel holds up over time), on-site cutting removes a fabrication step for irregular runs, and single-supplier sourcing across four states simplifies procurement on multi-state jobs.
- Lower corrosion rates mean fewer replacement cycles over the life of the asset, reducing whole-of-life cost
- On-site cutting to 1-metre increments cuts down on custom fabrication time and offcut wastage for irregular runs
- Sourcing from one supplier across four states simplifies procurement on multi-state projects
Applications
Trench Grates cover a wide span of load environments by design. Class B suits residential driveways, footways and parklands, while Class D is built for major roads, freeway shoulders, warehouses and loading docks carrying heavy vehicle traffic. The same range extends to general industrial sites, with class selection driven by the traffic and load each location needs to handle.
- Residential driveways and footways (Class B)
- Major roads, freeways and motorway shoulders (Class D)
- Warehouses and loading docks
- Parks and industrial sites
Technical Specifications for Trench Grates
| Products | Description | Quantity | Quote Request | |
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TR150B
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150mm Clear Opening Trench Grate & Frame Class B
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TR150D
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150mm Clear Opening Trench Grate & Frame Class D
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TR225D
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225mm Clear Opening Trench Grate & Frame Class D
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TR300D
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300mm Clear Opening Trench Grate & Frame Class D
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TR450D
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450mm Clear Opening Trench Grate & Frame Class D
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TR600D*
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600mm Clear Opening Trench Grate & Frame Class D
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FAQ's
Yes. This avoids ordering custom-length frames for runs that don't divide evenly into 2 metres, which speeds up installation.
Class B suits low-speed residential and pedestrian areas, while Class D is rated for major roads and heavy vehicle loading docks. Specifying the wrong class can mean a grate fails under load it wasn't designed for, so confirm expected traffic before ordering.
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