making retaing wall of rr ties 50' L X 6' H how many courses do I bury, and how do I space the dead men?

Question

wall is being built on a slope to level out my yard a bit.

Answer 1

At least one row below the frost line, two if you get wide temp swings.

depends a lot on the slope of the ground behind the wall, in a heavy load bearing set the deadmen min of 6 feet up to 10 for less stressful loads.

Answer 2

Your gonna have a cemetary in your yard!!!!!!!!!!!!