We have bought a split-level house made of lightweight/blue concrete and are planning to take down the wall between the kitchen and living room as the kitchen is too small and closed off today.
This is on the upper floor so the interior walls don't support much above (just a spacious cold attic), however, this wall is perpendicular to the trusses, about 35% into the house, so it might be supporting the truss? Or is a truss completely independent of support from interior walls?
In a neighboring house, they have removed this wall, but I'm not sure if they reinforced with a beam or not (the current residents bought it after the renovation). They have also opened up to the ridge so you can see that a couple of trusses stand over the now demolished wall, and that a couple of trusses at the other end of the house do NOT rest on any interior walls.
However, it looks like a couple of other trusses are supported by standing beams running along the end of interior walls in the middle of the house and feel unreasonably sturdy just to be a neat end to a wall.
I clearly need professional help here. Where do I start?
