Lessons learned in retaining wall construction: drainage, drainage, drainage
How to build a really big wall.
This is actually my house. I built this house as part of a 22-house subdivision 30 years ago, and a laborer and I built this timber wall, just the two of us.
I Think there were about 1,100 ties in this thing, so it was, about 7,000 12-inch spikes we pounded in with sledgehammers.