Corner,
You cannot design a house in a piecemeal fasion like this but for the record, in general all loadbearing structures need foundations.
It is important that known point loads are supported and ordinary chimneys are tied into main walls with widened foundations for this reason.
Finally, any internal walls at ground floor should really have a proper foundation because it is foreseeable that someone will load them up at some point.
Corner, at this point I'm drawing a line in the sand.
You have been copiously advised by the respodents here.
Our function is not to provide a free design service for your house.
To do so would undermine the very professions to which some of us belong
We've tried to make you aware of issues you may need to consider with your team.
There is a limit to the competent information we can credibly offer so remote from the work.
As MOB has noted, a house has many variables, none of which are known regarding your house.
Seeking or offering detail information without a full briefing / overview could overlook important items.
To sum up, and this qualifies all previous posts also on this forum:
You should retain an engineer and architect to advise you as a matter of urgency.
Spread some cash around in this economy - we all need that multiplier effect working for us.
FWIW
ONQ.
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