Basement, but not under the entire house

[Hålta]

If you build a new house with a basement (intended for a garage) that is located under part of the slab for the house, how do you handle the wall that is inside under the house? It can never be inspected or maintained. How damp can it get and what happens if there is no organic material in the basement walls? What stone should you choose for the basement wall? Anything else to consider? No stairs or entrance to the house is planned from this basement, so the slab will be whole and placed above the garage as if the garage/basement did not exist.

 

[norrbottenstorpet]

I don't see any bigger problem or difference compared to most other basement walls. It's clear that it's difficult/impossible to redo drainage there, so the choice of materials becomes more important when refilling, perhaps extra draining material. Perhaps Isodrän on the outside, and extra important to have flushing possibilities for drainage tubes?

But the wall is built just like any other, with masonry block or a cast concrete wall. It becomes more specialized/troublesome to build a cast arch over the garage.

 

[Hålta]

I don't see any major problem or difference compared to most other basement walls. It's clear that it's difficult/impossible to re-dig a drainage there, so the choice of materials becomes more important during backfilling, perhaps extra draining material. Isodrän on the outside maybe, it's extra important to have flushing possibilities for the drainage pipes?

But the wall is built like any other, with masonry or a cast concrete wall. More specialized/difficult it will be to build a cast vault over the garage

Thank you for the response.
Do you have any idea on how to cast the vault and then cast the slab for the house itself and also achieve the same insulation in the house slab as in the rest of the house?