I need to persuade the sides of a mainly dry mill leet (lade, to those of you in the south!) from falling in to it. It's a sort-of retaining wall problem, except that the wall need only be about three feet high and it will slope back by around 30 degrees.
curved and longitudinally ribbed on their top and bottom surfaces, so they could be used to foem a sloping and slightly curved wall. They are used in quite a few places on the West Coast Main Line to hold back the lineside around signals, phone installations and the like.
Has anyone any idea what they are caleld or where they come from?
I'm open to other solutions to the problem, by the way!
Thanks in advance,