The ceiling edge elements have a height of 35 cm on the outside.
The inside has a height of 12.5 cm.

A perfect support for the ceiling beams can be achieved with height adjusting elements (12.5 cm), that are plugged onto the inside walls.

Here you can see an interior wall abutting an exterior wall in the form of a T-corner. (In the calculation program, the height of the wall must always be specified without the ceiling edge or height compensation).
The box for the electrical connections and the electrical cables are already set. They are fixed with PU foam before concreting.