If you mean to have stone ceilings and floors, they will probably need some added support from stone archers or iron beams. Just stacking stone floors on top of each other should be usable to create a solid tower or something. Don't remember the economics of it (how much stone is needed).

There are probably video tutorials about every material in the game, but the best way for me to learn here is intelligent trial and error... that is, not just slapping components around until things stop collapsing, but also observing how they hold and interact together.

Gives some insight, i don't think your going to be able to build that high. :/
https://youtu.be/gD3YQGufXgA

You'll need iron braced beams to support all that.

Stacking the floor 2 deep is going to slightly limit how wide your rooms can be, that last block or two where the ironwood beams turned red may only support 1 of the 2 in your stack. Also as you go up floors, you lose some width off the max you can do on the first floor, but you can switch to wood floors up higher if you don't mind that.

what I do can be summed up with
- hide columns of dirt in the walls to raise ground touch level to go higher
- use ironwood beams to support. The new angled ones are a giant help.
- keep an eye on how far across you can go at the lowest level. If you want bigger, you need to raise a central column of dirt, which again can be hidden with some care.
- you can also use trees as high reaching ground points, or a tree ON a column of dirt. If a fight or accident takes out the tree, things will fall.

Here is a tower i made, no mods, pre mistlands. The bottom level where it is wider has the raised ground ring inside the walls. You can see second ring up high is still stone floor, but note that this tower is very THIN. Its barely 1 good room per floor, about 7 or 8 2x2 tiles diameter.

https://steamcommunity.com/sharedfiles/filedetails/?id=2799499750

at low levels, the supports are simple:
https://steamcommunity.com/sharedfiles/filedetails/?id=2612860879
as you go up, you may need to start running the supports both directions making + signs or, if low on iron, trying some wonky diagonals in key spots or raising a vertical towards the middle. The higher you go, the more exotic/creative/ugly the support system can get. 3, maybe 4 floors is easy, and you can get 2 more underground easily.

It'll completely depend on how much "headroom" you want between floors.

If you only want it tall enough for the player to enter, you can cram a lot of stories in a stone only building, or only a bit of iron beam/pole use. Stone pillars and arches should support your floors.

If you want some head room, depending on how much, you'll have significantly less.

Personally I do not like the minimum space builds. 3-6m is my go to depending on how limited I am. 2m is the minimum for a player to be able to move in.

With the use or iron you can reach pretty massive heights without using raised ground or trees or anything else.

https://prnt.sc/LXvDLNeeTOvf https://prnt.sc/kYpw5d66F3xf Using a 5m clearance, this has a ground floor, 2 additional floors, and a roof all supported by iron and stone. It may be able to cram another equally spaced floor if I really wanted, but it throws off the aesthetic I wanted with that skull front.

oh, and in reference to the above on head space:
- the ironwood beams stick down a little and you can get jammed up on them in some places if you make it 2m tall.
- stairs, you can hit your head on the stone floor over the stairs going down because stone is thick. A wood tile with a rug over it gives you back that 1 2x2 of floor space that otherwise would have to be a gap over the stairs.
- stone works a lot better with 3m high. I cannot advise 2m, if you want that you should be using wood.

Originally posted by jonnin:

oh, and in reference to the above on head space:
- the ironwood beams stick down a little and you can get jammed up on them in some places if you make it 2m tall.
- stairs, you can hit your head on the stone floor over the stairs going down because stone is thick. A wood tile with a rug over it gives you back that 1 2x2 of floor space that otherwise would have to be a gap over the stairs.
- stone works a lot better with 3m high. I cannot advise 2m, if you want that you should be using wood.

Yes, that is true, snapping ironwood beams to stone increases the height, But stone is tall and wide enough, with careful positioning, that you can embed the iron beams and poles into the stone. Thus hiding it from view, negating that increase in space occupied, while still giving it full support.

It's a pain to do on the fly, but if you plan out the frame then lay stone on top of the frame it's easier. Still time consuming because you'll have multiple snap points the game will try to utilize though.