Or, how about a 2-ft
flat steel plate installed vertically restrained against lateral displacement
by 3-ft + or - long galvanized iron pipes driven into the ground about
2-ft. This system will not trap water -- the L-shaped plate will tend to
hold water. If you don?t want to see the pipes, they could be driven
thru U-bolts or galvanized U-clamps bolted onto the back of the
A protective coating
sounds good ? I think cold-applied galvanizing is available from Home Depot;
asphalt foundation spray should last a long time too. In any case, by
the time corrosion takes its toll on the assembly, you may be ready for
I have a
piddly little retaining wall about 12' long retaining up to 2' of
soil. For landscaping reasons it is desirable to have this as thin as
possible. One possible design is an L shaped bent steel plate about 3'
high with a 2' "footing" under the high side utilizing the weight of
soil for stability.
concern about this design is corrosion. I have some thoughts on this.
First is to use a low alloy steel which will perform well on the "air" side
but I don't know about the "soil" side (I believe A242 might be such a
steel). Second is to provide a corrosion allowance and not worry about
it. Third is to use a protective coating such as asphalt foundation
spray. Fourth is to give up on the whole idea; tell my wife she can't
have it (tactfully, of course); and look for a completely different