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