GATIC® Access Covers
GATIC® has a long and proud history of manufacturing in Australia, producing high-performance access covers, manhole covers and metal gratings that are the benchmark in its industry. GATIC® has been specialising in the manufacture and marketing of access covers and gratings since 1937. With over 75 years of foundry experience and a large manufacturing and distribution network, GATIC® is well placed at the forefront of the industry for product quality, innovation, technical support and customer service.
Contact us for a quote on all GATIC® access covers or grating products.
GATIC®’s extensive range of cast iron access covers includes manhole covers, stormwater pit covers and metal gratings. All GATIC® products are designed and manufactured to meet the highest standards set by the civil and construction industry worldwide and are used in the following applications:
|Circular Access Covers||
|Square and Rectangular Access Covers||One-part frame and units are suitable for use over shaft, pit or access opening such as:||
|Two or three-part frames are designed for openings where the length is substantially larger than the width including:||
|Multi-Part Access Covers||
|Ductile Iron Gratings||
Gatic® Product Catalogue and Technical Guide
|GATIC® access covers are available in multiple parts||
|Ductile Iron Gratings||
Standards and Approvals
AS3996 – Access Covers and Grates .
EN124 – Gully Tops and Manhole Tops for Vehicular and Pedestrian Areas
GATIC® is committed to operating under a strict International Quality Management System in accordance with ISO 9001. Its objective is to satisfy and exceed our customers' requirements and expectations in both quality products and services. Rigorous testing and quality control throughout the production process are audited and continuously improved to ensure that GATIC®’s products comply with Australian Standard AS3996 and European Standard EN124.
To ensure consistent quality and performance, all GATIC® access covers and grating are inspected as follows prior to delivery.
- Dimensional tolerance check
- Material compositions
- Batch traceability data
- Load testing (in accordance with AS3996 or EN124)
- Keyhole gauge fit
- Painting surfaces
- General appearance
GATIC® Mechanical Testing Laboratory
GATIC®’s Mechanical Testing laboratory is recognised and accredited by the National Association Testing Authorities, Australia (NATA Laboratory Accreditation No. 14262). Load tests are carried out on the capacity test rig as part of GATIC®’s Quality Assurance program in accordance with Australian Standard AS3996 and European Standard EN124. Test reports are available on request.
GATIC® also undertakes the following tests both inhouse and through independent institutes:
- Bicycle Tyre Penetration Resistance Test
- Hydraulic Flow Rate Test
- Gas-tightness Test
- Water-tightness Test
Load testing under Australian Standard AS3996 involves Type Testing of a unit to ensure the product achieves its Load Classification and Ultimate Limit State Design Load (kN).
- Five repetitions of the serviceability design load is applied to the unit in accordance with AS3996:2006 subclause 126.96.36.199, measurement of Ultimate Limit State Design Load (kN). Set must not exceed the Permanent Set and Deflection Limits (refer to Table 4.2 in AS3996:2006 subclause 188.8.131.52).
- Followed immediately by one application of the ultimate limit state design load for a minimum of 30 seconds. The unit must sustain the above tests without visible cracking, collapse or other forms of structural failure.
GATIC®’s complete range of metal Access Covers, Road Grates and Frames are designed and tested in accordance with the Australian Standard AS3996:2019. The following table provides an overview of loading classes, its typical use and loading capacity. Appropriate class for a cover or grate depends upon the place of installation.
Australian Standard - AS3996:2019
The Australian Standard, AS3996:2006 is GATIC®’s nominated standard for projects/applications within Australia. Type testing under AS3996:2006 requires the Access Covers to meet the Ultimate Limit State Design Load (kN) without exceeding the Permanent Set and Deflection Limits. Refer to AS3996:2006 subclause 4.2.1. for further details.
|CLASS RATING||TYPICAL USE||NOMINAL WHEEL LOAD (kg)||SERVICEABILITY DESIGN LOAD (kN)||ULTIMATE LIMIT STATE DESIGN LOAD (kN)|
|A||Footways and areas accessible only to pedestrians and pedal cyclists||330||6.7||10|
|B||Footways that may be mounted by a vehicle or livestock, and light tracker paths||2670||53||80|
|C||Malls and pedestrian areas open to slow moving commercial vehicles||5000||100||150|
|D||Carriageways of roads and areas open to commercial vehicles||8000||140||210|
|E||General docks and aircraft pavements||13700||267||400|
|F||Docks and aircraft pavements subject to high wheel loads||20000||400||600|
|G||Docks and aircraft pavements subject to very high wheel loads||30000||600||900|
NOTE: The above descriptions of classes of units reference to “wheel” should also be taken to include “dual wheels”. Norminal wheel loads are a guide only. Consideration should be be given to the type, size and pneumatic pressure of the load in application. A force of 1 kN is approximately equal to the weight of 100 kg.
Installation & Testing
Installation & Testing
What is the nature of cast iron covers and products?
Cast iron has a unique natural process of corrosion resistance due to the chemical composition and reaction to atmospheric exposure, which is called Patination. The patina effect is actually a thin layer of oxides that acts to slow down further corrosion. Unlike steel, cast iron is inherently resistant to continued rapid corrosion. Steel oxidizes into flakes, which lift off and exposes fresh surfaces.
On the cast iron (Ductile/Grey) the patina is iron oxide (to the metallurgist it’s iron oxide and to the rest it’s just rust). Cast iron rusts very quickly when the humidity exceeds 60%, however, the rust is not invasive but will act as coating to prevent deep rusting.
The patina effect is a typical trait in cast iron covers and grates which goes through a predictable set of stages. Other metals are known for their patinas, but exhibit many range of colours; from greens (Bronze) to yellows and even clear.
The appearance of cast iron access covers and metal grates can change with the local conditions and the amount of traffic the units are exposed to; example high trafficable area, the appearance in most cases comes up with a silver shine. The choice of cast iron access cover and grates are predominately chosen by design engineers because of the corrosion resistance, strength, durability and in some cases appearance (rusty look).
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