Thanks. I mean the so-called 'skeleton' of the building, the supporting structures on which the building is constructed. They are considered to be the strongest part of the building. Is it called 'load-bearing structures'? We've been debating with colleagues here - some say it's supporting structures.
I am not in the trade, so I cannot give an authoritative answer. I know that when I have discussed with builders alterations to houses I have owned, they have spoken of 'load-bearing walls', but that is the extent of my knowlege, I'm afraid.