While I mentioned I have had 50” and 54” layout heights for single deck layouts I did operate on one Sunday at 56”. Surprising to me it was only 56” as it felt slightly uncomfortable and until I asked thought it was 60”. A great switching layout the biggest reach was 19” to any track accessible from both sides as it was a center of the room island layout, 41” x 25’. I still had a great time. The owner is 6’2 and maybe low 40’s, a perfect height for him. He has been told it may appear in the 2025 Model Railroad Planner annual Tony K does for Kalmbach