Currently building a loft in a summer cabin. The floor joists for the loft will rest on 2 interior walls (2-span) with a span of 2.95m x 2 = 5.9m. I'm considering whether the interior walls can be framed with 45x70 on cc450 or if that would be too weak??? It will be OSB & gypsum on each side of the walls.
Doesn't it become three compartments with two inner walls?
It should work, this wall becomes really strong with OSB on both sides.
Even small studs can handle large vertical loads as long as they are prevented from buckling, for example, by fastening strong sheet material on both sides.