40d:Construction

Any object that is normally fashioned out of a naturally-occurring ("rough-hewn") wall can also be built on a completely empty tile as a construction. This includes stairs, ramps, fortifications, and new (dwarf-constructed) walls and floors.

Although "built", constructions are not the same as buildings (such as workshops and furniture), instead functioning as inert terrain objects. Once built, you cannot interact with constructions via the q or t menus (although you can suspend or cancel their construction via these keys).

To build a construction, type b-C. A construction can be built out of any type of stone, blocks, bars, or wood, and requires a mason if made out of stone, glass or soap; a carpenter if made out of wood; or any kind of metalsmith if made out of metal.

Constructions behave the same as objects fashioned out of natural rock, although the manner in which they are removed is different and they cannot be smoothed or engraved (even if built out of stone). Stairs and ramps made from natural rock are removed via "Remove Up Stairs/Ramps" (d-z); non-constructed walls and fortifications must be mined out (d-d); and natural floors are removed by digging a channel (d-h). However, all constructed objects of any type are removed via "Remove Construction" (d-n). No specific labor is required to remove a construction, regardless of what labor was required to build it: even children can and will remove constructions (in fact they do so with glee).

Building a construction on a smoothed or additionally engraved floor will remove the smoothing, see removal behavior, and also the engraving. This will give the engraver the usual unhappy thought from art defacement in the case of a masterful engraving.

The most valuable material constructions can be made from is masterful tallow soap made from the tallow of a [MODVALUE:50] creature such as a dragon, which is worth 15000 a bar.

Strange removal behavior

Once a constructed wall or floor is built, then removed, the remaining floor changes to reflect the base rock of the tile, rather than any stone, ore or gem vein. For instance, if you were to build a wall on a square of a mined-out hematite seam within a basalt rock layer, then remove the wall construction, the floor underneath would become basalt, rather than the original hematite. More to it, if the floor was smoothed, it will become rough again, and engravings will not return.

One can use this behavior to their advantage in the removal of immovable boulders outside. By building a wall on top of a boulder and then removing the wall, the boulder will be destroyed.

Priority

Constructions are worked on in a first in last out ordering, also known as a stack (as opposed to a queue). As such, if you order new construction, workers will attempt to complete those constructions first before returning to work on other designated constructions.