I hope to build a retaining wall 5' and 6' tall by 44' long.
I had hoped to build it with a concrete footer, "cinder" blocks (filled with concrete) and slate veneer - but I am wondering how big & deep the footer should be to avoid future problems. We live in Atlanta so the frost depth is about an inch.
An alternative is to use concrete blocks from a home improvement store - but I don't really like the look, and they are only intended for walls up to 3'.
There is an existing retaining wall, actually part of the foundation which extends out about 6'. I would like to "extend" this wall with a 90 degree out-side turn, then 22' of 5' tall wall, then a 90 degree in-side turn, 5' of 6' tall wall, and finally a 90 degree out-sidet turn, and 17' of 6' tall wall.
Will footers 16" wide, 8" deep be sufficient?