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DF Suggestions / Re: Caissons.
« on: July 27, 2010, 04:13:28 pm »...
Well, the problem is that the way that this should work is that the box would just keep the water out long enough to build a serious wall... which means you need a box bigger than the wall you will build.
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Yep. If you wanted to do anything big and complex you'd have to start getting creative. The way I am imagining these caissons working would allow you to make a series of underwater pillars in a line, one small working area at a time, then you could dismantle and rebuild all the caissons to a different size as improvised dams in the gaps between pillars, allowing you to drain a very large space to work on filling in the gaps with solid stone.
Edit: actually, that's a very obvious use for them. If you can make a caisson three tiles wide, which you'd have to in order to have any usable space to work in, you make blocking most running water very easy indeed.