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RELN Uni-Pits VS Traditional Pits

Finding the right pit for your drainage system can be overwhelming at times, especially when there are so many options! To assist, we’ve put together a short guide of our Traditional Pit and Uni-Pit ranges to help you decide on the best solution for your domestic drainage project.

RELN Uni-Pits have a shallow design and are the fastest and easiest pits to install. Designed to fit directly into the stormwater line via 90mm or 100mm PVC Pipe, Uni-Pits are an ideal residential Surfacewater drainage solution. The unique vortex design and built-in debris collector helps clear water fast, whilst preventing pipe blockage. This design also eliminates any pooling water, which is a common breeding place for mosquitoes. Risers are not required for the Uni-Pit range, as vertical PVC pipe can be cut to the necessary height.

Recommended applications for each Uni-Pit is shown in the table below:

 Uni-Pits  Series 200  Series 300  Series 450
 Application  Perfect for paved areas around the home and pool, in domestic pathways, in garden beds and below taps.  Perfect for domestic & commercial paved areas and driveways.  Perfect for driveways, car parks and slow traffic commercial areas.

 

Traditional Pits have a fixed depth and typically side outlets for the pipework. By contrast, Uni Pits have a single bottom outlet. This makes it easier to set Uni Pits to the correct top surface level as a pipe is used for the riser to get the perfect height. So much easier than calculating the height to cut in the side of a Traditional Pit where the pipe needs to exit.

Recommended applications for each Traditional Pit is shown in the table below:

Traditional Pits  Series 250  Series 300  Series 450
 Application  Perfect under taps and downpipes, as a junction box, in domestic pathways, in lawns or at the end of a surface water drainage channel. Perfect for pedestrian, light vehicle traffic and large household surface water drainage systems.  Perfect for pedestrian, light vehicle traffic and large household surface water drainage systems.

 

 

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CLASS LOADING TABLE

Class Loading Typical Use Nominal Wheel Loading kg Serviceability Design Load kN Ultimate Limit State Design Load kN
icon RESIDENTIAL Non-rated usage. Designed for residential applications such as pathways and driveways. N/A N/A N/A
icon CLASS Areas (including paths) accessible only to pedestrians and pedal cyclists and closed to other traffic. 330 6.7 10
icon CLASS Areas (including paths and light tractor paths) accessible to vehicles (excl. commercial vehicles) or livestock. 2670 53 80
icon CLASS Malls and areas open to slow moving commercial vehicles. 5000 100 150
icon CLASS Carriageways of roads and areas open to commercial vehicles. 8000 140 210
icon CLASS General docks and aircraft pavements. 13 700 267 400
icon CLASS Docks and aircraft pavements subject to high wheel loads. 20 000 400 600
icon CLASS Docks and aircraft pavements subject to very high wheel loads. 30 000 600 900

RESIDENTIAL

  • Non-rated usage. Designed for residential applications such as pathways and driveways.
  • Nominal Wheel Loading (kg)

    N/A

  • Nominal Wheel Loading (kg)

    N/A

  • Nominal Wheel Loading (kg)

    N/A

CLASS

  • Areas (including paths) accessible only to pedestrians and pedal cyclists and closed to other traffic.
  • Nominal Wheel Loading (kg)

    330

  • Nominal Wheel Loading (kg)

    6.7

  • Nominal Wheel Loading (kg)

    10

CLASS

  • Areas (including paths and light tractor paths) accessible to vehicles (excl. commercial vehicles) or livestock.
  • Nominal Wheel Loading (kg)

    2670

  • Nominal Wheel Loading (kg)

    53

  • Nominal Wheel Loading (kg)

    80

CLASS

  • Malls and areas open to slow moving commercial vehicles.
  • Nominal Wheel Loading (kg)

    5000

  • Nominal Wheel Loading (kg)

    100

  • Nominal Wheel Loading (kg)

    150

CLASS

  • Carriageways of roads and areas open to commercial vehicles.
  • Nominal Wheel Loading (kg)

    8000

  • Nominal Wheel Loading (kg)

    140

  • Nominal Wheel Loading (kg)

    210

CLASS

  • General docks and aircraft pavements.
  • Nominal Wheel Loading (kg)

    13,700

  • Nominal Wheel Loading (kg)

    267

  • Nominal Wheel Loading (kg)

    400

CLASS

  • Docks and aircraft pavements subject to high wheel loads.
  • Nominal Wheel Loading (kg)

    20,000

  • Nominal Wheel Loading (kg)

    400

  • Nominal Wheel Loading (kg)

    600

CLASS

  • Docks and aircraft pavements subject to very high wheel loads.
  • Nominal Wheel Loading (kg)

    30,000

  • Nominal Wheel Loading (kg)

    600

  • Nominal Wheel Loading (kg)

    900