floorwise
/ˈflɔːraɪz/Definitions
1. adverb
in a manner that takes account of the floors of a building, especially in a way that is safe for stairs.
“She walked floorwise through the maze of corridors to find the exit.”
2. noun
a person who walks or moves floorwise.
“The fire marshal was a floorwise expert, advising people on the safest routes.”