I guess its my week for landing questions so here goes question number 2. I’ve seen this twice now in one week and both times its had me wondering. Is there a certain thickness per span length that these landings should adhere to? I imagine it depends on concrete strength and internal reinforcement; but what would you recommend on this? The span was about 3’-6" across, built in the 1960s, and obviously some evident cracking on the top.
Because of the cracking and deterioration on this one I planned to call it out, but in the one I had earlier in the week, it was a little thicker and no cracking and I didn’t call it out. Just wondering if there are any specs to work off of for this type of install.