Tips for Support Building
In order to be ‘supported’, the support needs to go all the way down to the foundation. If you’re building off the sides of your school but are missing supports at the bottom, it will cause that.
There’s a research called ‘Supports All The Way Down’ or something that has the outdoor and indoor supports that you can use to shore up the overhangs and bring support to the upper levels.
From a wall or column, you can extend a floor 7 tiles away and it would still be supported. But that wall/column has to reach the ground.
If you build a new wall on the 7th tile of the floating floor, that wall gives no extra support.