I have a 1958s post war bungalow with full basement. All joists are fir, on 16" centres, and are rediculously strong. Wood quality seemed better back then.
I'd like to tak out the support wall between my kitchen and dining room, where the span is 9 ft.
What's odd is that in the kitchen, the ceiling joist pattern is different from the floor joist pattern and the support wall to be removed does not line up with a support wall in the basement. It misses it by 5 ft. (this was done i assume so that the support wall didn't bisect the kitchen when it was first built.) This means that the posts will be sitting on floor joists, not on the support wall in the basement.
Is the only solution to put posts in the basement to line up with the posts upstairs? or is the floor joist strong enough to support the posts. The support wall is currently just holding up the ceiling in the dining room, and it's share of the roof. Vancouver Canada, very little snow.