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- 21 Jul 2019
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I want to build a tiny raised parking space where I currently have a yard. It will be approx 5x2m and some builder friends of mine have offered to do the work. To avoid having to go to planning I would like to make it permeable. Apparently this means the cheapest option is MOT type 3 hardcore - possibly finished with some gravel on top. My main question is can anybody tell me exactly what constitutes MOT type 3? Is there a specific size range and material? My parents have a load of hardcore they've just dug up and I was going to sift through and rescue what I could to use in my drive but not sure what I'm looking for.
If anyone knows too - my plan is to dig down through the concrete yard that is currently there to soil, pop down a permeable membrane inside retaining walls and then infill with the hardcore. The soil here is clay though - so how permeable this is actually going to turn out to be I will only find out once we dig down. If it doesn't drain well can I just connect an overflow pipe back to my rain water collection pipe which is close by? Does this sound like the cheapest and easiest route to getting the job done?
Many thanks!
If anyone knows too - my plan is to dig down through the concrete yard that is currently there to soil, pop down a permeable membrane inside retaining walls and then infill with the hardcore. The soil here is clay though - so how permeable this is actually going to turn out to be I will only find out once we dig down. If it doesn't drain well can I just connect an overflow pipe back to my rain water collection pipe which is close by? Does this sound like the cheapest and easiest route to getting the job done?
Many thanks!