Nauer
2025-08-05 16:35:12
- #1
You are already doing the sectional underpinning correctly, but be sure to ensure that a keyway is created between the concreted sections so that the new foundation remains rigid and force-locked. If in doubt, with clay this can also be easily solved by simple notches in the existing structure – this way the whole thing couples better later and you reduce the risk of settlement.
Regarding the question of water management: moisture relocations in the subsoil can usually only be roughly estimated in existing buildings. One possible approach is to carefully document the course of layers, any existing old plaster or discolorations in the soil, as well as the capillarity of the surrounding clay. More than that, observing over several months by creating small trial pits and temporary moisture sensors, is not possible on your own.
Pay very close attention to the penetrations, e.g. in installations, and do not forget the wall connections in detail – are the planned vertical rises accessible from the outside or are you working purely from the inside?
Good luck!
Regarding the question of water management: moisture relocations in the subsoil can usually only be roughly estimated in existing buildings. One possible approach is to carefully document the course of layers, any existing old plaster or discolorations in the soil, as well as the capillarity of the surrounding clay. More than that, observing over several months by creating small trial pits and temporary moisture sensors, is not possible on your own.
Pay very close attention to the penetrations, e.g. in installations, and do not forget the wall connections in detail – are the planned vertical rises accessible from the outside or are you working purely from the inside?
Good luck!