Please be detailed, and specific as to what you mean.

"ive putted" How?
"in the Ini" Which ini? Where in the ini?
"doesnt seem to work" How are you testing this? What do you think happens?

Upload a copy of your ini to something like paste bin and link here.

[SuperStructures]
AllowIntakeToPlaceWithoutWater=True
NoFoundationRequired=True
RemoveFloorRequirementFromStructurePlacement=True

that is my ini Line, i added that to my Privat Server GameUserini.
but when i try to snap ceiling to a foundation it still says it needs foundation support

Okay seems i fixed it, by just copying the entire ini into my GameUserIni

引用自 Rebbit：

Okay seems i fixed it, by just copying the entire ini into my GameUserIni

Then you must have made a typo somewhere.
You ONLY need to copy configs from the pinned discussions that you are changing from defaults.