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Stormwater attenuation tanks

Stormwater tanks

Each designed and produced for installation as a complete bespoke system, our stormwater tanks are the most cost effective and flexible storage and disposal solution on the market.

Fabricated from the widest available range of helibore galvanised corrugated steel pipe, our tanks provide an infinite variety of layouts to match the appropriate capacity with the local terrain.

Each tank is custom built with all the required access shafts, ladders, inlet and outlet connections - making them the easiest and fastest system to install.
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 View our 3D interactive stormwater attenuation tank model
Click here to view our interactive 3D stormwater attenuation tank model
  • Technical specifications & calculations


    Tank dimensions calculator

    Tank volume (m)

    Tank diameter (m)

    Number of legs
    Attenuation tank sizing

    The required capacity for attenuation tanks depends on a number of factors which are unique to each project.

    We can model the circumstances on a project using Microdrain software to calculate the volume of water storage required. To undertake this exercise, we need the following information:

    • Impermeable drained area (i.e. roads/car parks)
    • Max. rate of discharge permitted from the site
    • Storm return period, now typically 1 in 100 yrs
    • Geographical location
    • Approx. depth of drainage system
    • Plan area where attenuation is to be located
  • Extra value
    Value engineering is a key aspect of our stormwater tanks.

    Thanks to the way they are designed and perform, our tanks are renowned for offering major benefits over crate systems, for example. They require far less spend on materials and accessories, frequently saving many thousands of pounds.

    Find out more about our value engineering here


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