Anyone got a good way to size an attenuation tank?

[Alan Ambrose]

I'm on clay with high GW level, 250m^2 roof area, 0.13 ha plot, 627mm annual rain. I have the FEH13 & 22 numbers for rainstorms.

 

I can see the uksuds tool but that seems designed for developments e.g. the 1st question is "Significant public open space (ha)"?

 

p.s. and no particular restrictions / instructions from the planners re SuDS.

Edited June 30, 2024 by Alan Ambrose

[LSB]

I've got a couple of companies coming out this week to discuss treatment plants and the expected water that needs handling from rainfall and how to handle, slightly smaller and on 20% clay and rest sandy loam so not exactly the same.

But, I'll share with you what I find out.

 

 

[Alan Ambrose]

Ta, you should be good on anything sandy. I hope Owls Hall are not one of them - I paid £100 for essentially a sales visit.

[LSB]

2 hours ago, Alan Ambrose said:

Ta, you should be good on anything sandy. I hope Owls Hall are not one of them - I paid £100 for essentially a sales visit.

that name is not on my list.

So far booked is Les Cotton (laxfield), Mantair (Frinton) and Gilson environmental services (Ipswich).

 

A couple of others didn't come back to me so I won't chase unless these are all rubbish.

Hubby dug a percolation test hole today so we'll do some testing this week.

 

 

[Duncan62]

https://forum.buildhub.org.uk/topic/35099-streetfield-suds-system/?do=findComment&comment=513546

[Alan Ambrose]

Nice, thanks.