Joined: July 2004
||Posted: 27 May 2017,13:47
Last September? So not a rush job then?
It sounds as though the sub-grade is just too soft, so you'd be looking at something like.....
Commercial grade geo-textile
150-200mm capping layer of suitable material (DTp2 or Crusher Run 75mm)
Geo web stabilisation
150mm improvement layer of suitable material (DTp2 or Crusher Run 75mm)
Commercial grade Geo-Textile
150mm sub-base Type 1
If the ground is really bad, the capping could be 200-600mm (in layers n.e. 200mm), and the improvement layer could be swapped for a DBM or lean-mix concrete base course.
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