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« on: September 12, 2011, 10:44:30 am »
I'm building a 100+ level pump stack to bring magma up for my forges. I've dug out all of the necessary rooms and channels, and I'm beginning to put in the pumps, but they keep collapsing, sometimes taking out multiple pumps.
Why? I have two theories:
1. Some of my architects are newbies, they may have been desigining flawed buildings.
2. Once I had all of the rooms dug out and channelled, I placed all the pumps at the same time, even though only the top-most and bottom-most pumps had existing supports. As soon as the dwarfs began working, however, they built some of the middle pumps, unsupported by anything. Eventually the game realized this and caused them to collapse.
I suspect #2 is the cause, as I can't find anything in the wiki about poorly designed architecture. However, even though the dwarfs built unsupported pumps, the pumps woulnd't immediately collapse. In fact, after a few delayed collapses, I became concerned about a 30+ mini-stack of unsupported (but constructed) pumps in the middle of my larger stack, so I built some gear assemblies at strategic points for support. The dwarves build the gears without problems, but when I came back later, the whole stack had collapsed.
Why is this happening? What can I do to prevent it?