AS 3996*
"This standard specifies requirements for access covers and grates for use in vehicular and pedestrian areas. It applies to access covers & grates having a clear opening of up to 1300mm...." Clause 1.1 Scope.

As part of ACO's continuous product development and commitment to quality, ACO has NATA certified testing equipment (Licence number 15193), operated by fully trained and certified technicians.

DIN 19580 / EN 1433
The only standard written specifically for grated trench drains, and internationally recognised, is DIN 19580.

EN 1433 is superseding DIN 19580. It accounts for different widths of grates, with different size test blocks for different size channels.

EN 1433 tests products in exactly the same method as DIN 19580 with the same load categories, up to 900kN.

As with DIN 19580, EN 1433 offers test methods for both the grate and channel body. It accounts for both proof loading and catastrophic failure. Load test - with relevant blocks A 75mm x 250mm test block applied to a 100mm grate - the full test load is being applied to the grate giving a meaningful result. Wider grates involve different size blocks.