MC2 Multi-Cell Unit

A Low Maintenance, Set-and-Forget Precast Solution for On-Site Detention

Description

SVC’s patented MC2 Multi-Cell system is a simple but effective on-site stormwater detention (OSD) solution for commercial, industrial, and subdivision projects.

Designed in 1991 as part of a collaborative initiative between SVC and Dr Donald I. Phillips, Senior Lecturer of Swinburne University, the Multi-Cell unit’s core function is to slow and control the discharge rate of stormwater from a site. This is particularly critical for new building projects and increased density developments, where the existing drainage infrastructure is inadequate to handle the increased stormwater runoff caused by the addition of more hard surfaces on-site.

How It Works:

The MC2 Multi-Cell is a self-contained system comprising a series of precast concrete cells separated by alternating small orifices. As stormwater passes through the unit, it must travel through each cell before finally exiting the unit, which effectively slows the rate of stormwater discharge.

The MC2 Multi-Cell is available in different model numbers to satisfy a broad range of volumetric and hydraulic requirements. It offers a robust, reliable and low maintenance solution for on-site stormwater detention, ensuring long-term performance and compliance.

Features & Benefits

  • Offers precise outflow control for a variety of inlet heads and site discharge rates;
  • Precast unit is easy to install and requires low to no maintenance once installed, as all configuration is completed during manufacture;
  • Standard stock solution from SVC, available within short timeframes;
  • A patented product that is widely accepted for use in many Victorian municipalities.

Material Specifications

  • Produced in a high-strength 40MPa concrete mix, ensuring robust performance;
  • Features a 150mm dia inspection opening with screw cap over each of the 5 internal chambers;
  • Available to suit 150mm or 225mm dia inlet and outlet pipes.

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Operating since 1948, SVC Products is a well-respected local manufacturer and supplier of high quality products to the civil construction industry. Contact our friendly team to discuss your next project.

Frequently Asked Questions

How can I prevent the MC2 Multi-Cell unit from blockages?

When properly installed, the MC2 Multi-Cell is designed to be a maintenance-free, 'set and forget' product that is buried underground. Silt and small debris particles will generally pass through the unit.

To ensure no blockages of the internal orifices, it is essential to install grates on any pits receiving surface stormwater, to prevent the entry of any large litter or debris into the MC2 Multi-Cell.

Can you drive over the top of Multi-Cell units once installed?

Generally, we recommend that MC2 Multi-Cell units should be installed under a garden bed or lawn area, enabling easy access to the unit if later required.

However, on restricted sites where space is limited, the MC2 can be installed beneath a concrete driveway. In this scenario, the driveway slab must be adequately reinforced to distribute wheel loading.

If installing the MC2 Multi-Cell beneath a gravel driveway, there must be a minimum of 600mm cover to ensure protection from wheel loading; otherwise, place a protective layer of reinforced concrete between the MC2 and the surface gravel.

How do I know which MC2 Multi-Cell model I need?

All MC2 Multi-Cell units have the same external dimensions. The different model numbers refer to the size of the alternating orifices between the internal cells.

To determine which MC2 Multicell model you require, you will need to understand the inlet head (in metres) and required rate of discharge from your site. You can then refer to the MC2 performance charts in our downloadable MC2 MultiCell brochure to see which corresponding A- model number is suitable.

Please note: The MC2 Multi-Cell is a standardised solution and cannot be configured to produce discharge rates outside what is listed on the current charts. For more information, please consult your hydraulic engineer.

What is on-site stormwater detention (OSD) and why is it required?

On-site Stormwater Detention is the process of capturing stormwater on a property and releasing it slowly at a more controlled rate of discharge. The reason for this is to reduce pressure on the municipal drainage system during periods of extreme weather and heavy rainfall.

Councils have mandates in place for OSD to ensure that the construction of new buildings and developments do not increase the risk of downstream flooding, which could be very hazardous in high traffic environments.

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