I will install an interior ceiling under an exterior roof that is "self-supporting" on roof rafters and exterior walls. The span is about 5.6m. Approximately in the middle will be an interior wall, which I plan to use to support the interior ceiling with insulation. There will be 20-30cm of loose fill insulation on it.
The interior wall will be made of 45x95, but how do I best splice the ceiling beams over this? I have drawn three options according to the image. Overlapping is probably best and easiest, but does it have any practical significance for the rest of the roof construction? Otherwise, metal plates, but then each ceiling beam only rests on <45 mm, and that feels a bit too little.
