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Earth bank
Hello,
I have been deciding whether I should build retaining walls to terrace my garden, or whether I should try and use earth banks. The soil is quite clayey (S.Devon). The slope rises about two and a half metres over about eight metres. I have no easy access to get in materials, which is why I would prefer to use what is there (lots of earth). I would also like the garden to continue looking quite natural, so a giant concrete retaining wall wouldn't really fit. I did consider using gabions with a geotextile lining, but they are quite expensive. So, now I need to decide: (a) how steep an earth bank I can get away with (b) what plants would be best for holding the bank together I realise that (a) is a bit of a "piece of string" question. I've seen figures of up to 45 degrees for clay soils. I'll be looking to rise about 1-1.25 metres at the front and back of the terrace. Anyone got any good examples of their own earth banks? For (b), I had thought about just grassing the bank, but I'm wondering if anyone has any suggestions for plants which will do a better job of "matting" the surface of the bank together? Thanks in advance, Al Reynolds |
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