Project Planning

There is no Australian Standard that governs the performance of floor gullies. ACO believes that EN 1253, specifically written to regulate these types of products, is the most appropriate International Standard.

EN 1253 – Gullies for buildings 1. Scope
‘This Standard classifies gullies, gives guidance for places of installation and specifies requirements for construction,design, performance and marking of factory gullies, irrespective of material,for use in drainage systems operating under gravity including siphonic systems.’

The table below is created to give designers,installers and users assistance in selecting the correct product.The table is based on loadings outlined in EN 1253 and is cross referenced with AS 3996 – Access Covers and Grates,the most relevant Australian Standard for load classifications. ACO has gained NATA accreditation (No.15193) for its testing laboratory and can provide test reports to EN 1253.

Standards only give an objective means for comparing products. There are a number of key factors affecting a product’s resistance to load and additional consideration must be given to:

• Type of traffic: Consider the weight of loads being carried, for example forklifts, trolleys and trucks.
• Wheel type: Solid tyres exert more stress through smaller contact areas than pneumatic tyres, so a heavier duty grate may be required. Note, laden trolleys can intensify the load.
• Frequency and speed of traffic: More frequent and faster traffic can intensify the load.
• Position of gully: If the product is positioned where traffic will be turning or braking, or if it is installed at the bottom of a ramp, the gully will be subjected to extreme forces.

¹ Draft prEN 1253

Note: For higher load classes contact ACO.

Water flow is restricted by the open area of grate. For the ACO Wexel range, there is no further reduction of flow from the underlying bodies. The head of water creates pressure and is also part of the calculation.

The table below shows the flow rate based on the diagram shown right.

Note that fixed or removable strainers will reduce the flow rates.

The table below is based on information gained from material suppliers and published information. Chemical resistance of materials may vary according to the concentration of chemicals used, the presence of other chemicals and other factors such as temperature.

The following information is a general guide only. It is the customer’s responsibility to ensure the suitability of the product for the application. ACO can supply material samples for testing chemical resistance.