Key Considerations for Selecting Drainage Systems

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Drainage systems have a simple but crucial function- to ensure water is effectively removed from the installation area. Despite the importance of drainage systems, specification and selection of an adequate system is often left to last minute or overlooked during the construction process. Poor drainage selection and design can lead to substantial damage to the install area. 

Area Layout & Surface

A key consideration to selecting drainage systems is the sites access to existing plumbing or drainage systems. New building sites may allow you to have more selection when it comes to sizing of the system, however older, existing sites may have size requirements. Building surfaces, such as concrete or earth will also impact the selection of drainage systems.

Use of Installation Area

Consider the usage of the installation area. It is crucial to consider what will be running over the drain. Forklifts, trucks & cars require drainage solutions that can bear the weight of these loads. Ensure the drainage has an adequate load class to prevent the drain from failing. Learn more about load class here.

  • Class A DrainsSuitable for surfaces subject to light pedestrian use. Not suitable for any vehicle traffic
  • Class B DrainsFootpaths, areas subject to slow moving traffic eg residential parking areas, driveways
  • Class C DrainsResidential roads, carparks. Slow moving cars & light commercial vehicles
  • Class D DrainsRoadway applications, lightly loaded forklifts, warehouse
  • Class E DrainsHard wheeled forklifts, construction equipment, freeways/highways/motorways
  • Class F DrainsAreas subject to ultra heavy duty loads such as operation areas in airports & ship ports
  • Class G DrainsAreas subject to extreme heavy duty loads such as operation areas in airports and ports

Environmental Concerns

External conditions such as exposure to seawater, debris and weather patterns will all have significant impacts on the types of drainage solutions that should be installed in that particular location. 

Accessibility & Maintenance

Ensure systems can be easily accessed for repairs & maintenance, as well as materials that are durable and can withstand extreme conditions if necessary.