The units are s/mm as in seconds per millimetre for water to percolate into the soil. The British Standard specifies how to carry out the test and which results are unacceptable for a soakaway system, i.e the permeability is too low.
Close this thread i dont think it is going to get any where...
The figures are based on a design manual for the raised mound hence the 'accuracy'. I understand it is quite difficult to specify an exact soil however i thought it might be worth a try.
Cheers
Hi,
I am currently working on a project which involves a septic tank and will discharge to a raised mound soakaway system.
As part of the filter process the mound will be predominantly sand (percolation = 12 - 72 s/mm) however i also want to specify a 300mm thick layer of imported soil at...
Hi
Can anyone offer me some advice on how to calculate settlement in a road from cyclic loading? The road is proposed to be built on made ground with clay occuring at around 1.5m depth. The risk of settlement has been identified but we have no idea how to calculate the expected settlement...
