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I have had a really excellent idea for a small megaproject (a kiloproject?), but I don't think I can see enough z-levels to build the whole thing. It would need 20-30 above the ground, and IIRC I can only see about 10. So, is there actually a hard ceiling (as it were) that I may run into, or will DF add levels as necessary so I can build as high as I care to?

Incidentally, my kiloproject is a red (bauxite) pyramid, topped with a black (obsidian) inverted pyramid, and maybe some stupid magma tricks. My nobledwarves will be so pleased.

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up vote 4 down vote accepted

I believe the ceiling is capped at 10 z-levels above the highest ground level on the map.

Basically, you want to look for an embark site that has a peak on it - you can flatten the mountain downwards to get enough "headroom" for your project.

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An inspection of my map shows the peak of my mountain at +10 above ground level, and the highest z-level I can move to at +27, for a difference of 17 z-levels. I'm not sure where 17 comes from, so that's weird. I was mostly looking for whether there is a hard cap or not, and it would seem that I've found it. Thanks! – andronikus Sep 16 '11 at 19:48
@andronikus Ground level (or +0) changes based on where your cursor is. – Raven Dreamer Sep 16 '11 at 20:15
Yes, I figured that out. By ground level there I mean the lowest z-level with open space above ground. – andronikus Sep 20 '11 at 13:30

I believe that there is a tool in DFHack for extending the ceiling infinitely. Not all at once, just a couple at a time, or maybe as many as you need. This might increase lag, though, so use it carefully.

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The DFHack command "infiniteSky n" will increase the Z levels of sky above your embark by n Z levels. – Mark Ripley May 12 at 12:43

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