Embed underfloor heating pipes in casting dimensions

Good day,

I am planning to make a breakthrough between the kitchen and the dining room.

Everything has now been calculated by the structural engineer, the wall is supported and the wall has already been removed.

When removing the wall, I saw that the underfloor heating pipes now run into the kitchen on the far left where logically the door was.

The problem now is that the underfloor heating pipes run at this point.
(see photo)



I do not want to remove about one square meter of the floor before and after in order to move the pipes there to the left and right; maybe I even have to chisel away more.

Instead, I want to press down the pipes with fixing tape and a setting iron, fix the floor slab there. The HEA and HEB beam would initially hover about 2 cm above the underfloor heating pipes on the cantilever lift, and then I would pour the spot with Pagel or Eurogrout (underpinning mortar).

See photo


Now to the question: Is it okay for the underfloor heating pipes to be embedded in the grout mortar together with the support foot? Because in my opinion, the grout mortar must not give way and is not flexible so that the underfloor heating pipes are damaged?

Regards Gregor