I am considering building a retaining wall in my back garden. At the moment I have a 1.5m bank which i want to cut into increasing the size of my garden. The top of the bank is a field which does have a considerable amount of water coming off it during bad weather so this will have to be taken into account.
What i would like to know is what dimensions the footings should be. The soil is mostly clay so is quite heavy and stable. The wall would be approx 1.5m high and approx 12m long.
I have been advised that i should use concret blocks, filled and barred. Would single skin be ok for the wall.
With the amount of water coming off the field i'd like to put some kind of drain for the water to come off the side rather than weep holes as there will be a patio next to the wall.
I hope you can help me out with this project. Im very sure this won't be my last post.