This gravel and soil would be placed on top of an impermeable clay cap or butyl liner, basically to encourage drainage of the rooting zone but with no ingress of water into the landfill. The soil is usually ridged at a 30m to 60 m wavelength to encourage lateral drainage into the lower-lying...
Does it then matter what grade of stone you place? Would it be possible to avoid using geotextile by graduating the stone fill, using fines above the coarser grade material?
Hello,
I currently work in land restoration to woodland. We usually specify placement of up to 2 m depth of soil over landfill or capped sites to allow for planting trees (according to drought and rainfall data for the particular site). I would like comments, please, or some idea about the...
