We are going to extend our house according to the drawing below. When I calculate the glulam beam above the windows, it should be glulam 42x225. At the same time, it is stated that the side posts should be glulam 90x90, but the utilization rate is only 12% on these. Shouldn't we be able to manage with regular studs 45x195? See green-marked studs in the image below.
Without counting, it is clear from a long way that you can manage with 45x195 as wall studs. This assumes that you stabilize laterally using, for example, paneling on the inside.
I wouldn't say it's visible from a long distance, it depends on how tall they are, but spontaneously I think so too. However, I've learned not to give spontaneous answers on the Byggahus forum when you can wait for facts. They are not braced sideways, which is the biggest limitation. The buckling load in the weak direction for a 45x195 C 24 is about 15 kN at 2 m height.
@vectrex & @justusandersson I interpret your responses as if 45x195 is fully sufficient since there will be both OSB and plasterboard on the inside as well as horizontal cladding on the outside. This should take care of the buckling load sideways?
