From dwarf fortress wiki.
How to remove floors in dwarf fortress.
Walls will be cleaned automagically if an adjacent floor tile is cleaned but not otherwise.
Plants won t spontaneously grow on them but farms will grow fine.
So i assume the version 1 27 of masterwork and the 43 05 of dwarf fortress.
When removing a constructed floor over a natural or artificial floor the underlying floor will revert to the base layer type meaning gem clusters ore deposits engravings etc.
Do this by hitting the d esignate d ig keys.
There are two types of bridges a retracting bridge drawbridge and just a long floor or a wall permanently spanning a gap.
The important thing to remember is that all walls floors or anything built with the b c keys are lifo last in first out.
Building and removing a construction can change the floor it is built upon to a default value removing things like engravings and the magma flow floor above semi molten rock.
Then designate an area to be mined.
Make sure there are dwarves with the cleaning labor enabled.
All you need is a dwarf with the mining labor activated and access to a pick.
If it s the movable type remove as you would furniture with q x.
From dwarf fortress wiki.
Mining digging may be the most basic action in dwarf fortress.
From dwarf fortress wiki.
Constructed floors behave differently.
Constructions introduce slowdowns from two angles.
A good sized area from a lake thus making mud.
Dirt stone main article.
To remove a wall open the d esignations menu and select n remove construction.
Then either left click an area on the same z level with the mouse or use the cursor and enter to establish one point and move the cursor and.
When removing a constructed floor over a natural or artificial floor the underlying floor will revert to the base layer type meaning gem clusters ore deposits engravings etc.
Another way is to use a pit pond from the activity zone menu and have a dwarf throw water over a channeled area into a dug out area below.
Any dwarf will respond and eventually tear it down which takes longer than it took to build.
Here are some image.
There is no way to tell dwarves to clean so it is very much a waiting game.
Sappling still grew up.
Dwarves will not remove floors that another dwarf is standing on so if a dwarf decides to stand on a green floor the removal job could be canceled.
Dwarf fortress masterwork v1 27 43 05.
Impact on framerate.