thomas-neemann wrote: ↑
Fri Jul 31, 2020 3:44 pm
the drawings do not seem to match reality. here you can see a strong bar.
When the frame factory get the architect's drawing, they will do their way to form the space required.
For the ground floor, say ceiling height is 3000mm, they will build all frames in 3000mm high. These will be erected on the slab. When this is done, they put the floor (usually 300mm high) on top of that and form the platform for first floor. All frames under floor are load bearing walls.
When the floor is done, it's just like you got the slab plane, you could start to erect your first floor now. First floor ceiling height maybe 2700mm high. When first floor frames are done, you could cover it with trusses or rafters. With rafter, some walls have changed height, it is called a raker. For first floor, external walls are load bearing walls, internal walls could be load bearing walls, but best be supported under the floor directly.