Can't build again after remove

[ChOrAgOrA]

Hi, I start my base near the bandit town, after a will I remove a square of floor an a few walls and I notice that I can't build on the same place anymore, and I also have space for another fournage inside my base and don't let me build

Edited June 4, 2021 by ChOrAgOrA
Miss letters, English not very good

[Granny]

Regarding the floor issue. You might need to remove intersecting walls to replace your construction. 
The furnace, I am assuming you mean the large one, needs room to be placed.  That can be reclosed once it's deployed.  So, lets say you have a perfect spot for it in the middle of a circle. Open the circle up, then place the furnace, and  put the constructions back after. Large furnaces are moody and need a lot of room sometimes before they will settle their butts down.