Me and my co workers terracing a steep hillside with railroad ties. Used 4+6 2 ft in ground with 10inch Simpson strong ties into the railroad tie. Song by the Donkeys called lower the heavens ( not my music)
How did you decide the depth of the terrace? I would think they'd be deeper, to allow for growing and tending plants, or even to make a patio-like area. It looks great, just appears unusable, or less usable than it should be.