Some areas of the slab have been water damaged and will have to be replaced. Not sure if there was ever a fire. The owner says around 100 years old which would put it around the 1920's. I looked at keystone as well but as you say it doesn't seem to match. Do you know if historic UL codes are...
I am working on a renovation of an existing building and they have a floor system that I am unable to find any information about online. It seems like it uses V shaped metal deck ribs as tension reinforcement (no rebar is provided) and has a wire mesh where bottom of metal deck we would use...
