I'm building two hives with an interior depth of 14.5" and interior top-length of 23.75". In order to avoid almost certain comb-collapse, I am making half-frames that extends approximately 7" below the top bar. This is an experiment at trying to minimize the surface area per volume. The whole hive only needs to be 33" long in order to have the same volume as a 10 frame lang with 3 deeps. Where I live, the temperature usually exceeds 110 F one or two days each year but it also drops below -10 F at least once every four years. I am just curious on what the consensus of collapse is.