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[MaxMan]

So yesterday I got this crazy idea that I wanted a fortress completely submerged into water. I'm still building the layout and after my fortress is done I'm going to channel a huge hole about 15 / 20 levels deep around my fortress, and finally channel a river to the hole. I had to go through so many bugs and had to conquer a cave or two but everything is going according to plan.

Now, I'm wondering about water pressure since I want wells inside my fortress. Just how high would my wells have to be (relative to the river) so I don't have to worry about flooding my fortress?

I'm also wondering if I have long before I get sieged by goblins since I've never had a siege before.. but I did heard that if I don't completely close off my fortress, this would mean that I have lost.. and I can't afford that after all the effort I've put through. Right now though I have seen no sign of any kobolds or goblins yet, only giant rats, troglodytes and buzzards.

And lastly, I'm having a extremely hard time trading with the elves since they never have anything insteresting and even though I try to GIVE them stuff for free, they don't even want it. Will not trading with them eventually start a war?

[Max White]

Hi Max!
Well firstly, I have yet to test this myself in 2010, but I have been lead to beleve that water will seek its own level, so you will need to use flood gates and leavers or pressure plates to controll water flow.

As for a seige, then will only occer once you have a population over 80.

As for elves, they don't like when you try to sell them anything made from wood (Silly because they sell wood themselves, but what ever) but will gladdly accept any metal or stone. Not trading with them won't start a war, but trying to trade wood WILL start a war.

[Osmosis Jones]

Did you know; forcing water through diagonals resets water pressure!

So something like this will prevent flooding (note, image is top-down, it's all on the same z level).

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This message brought to you by the Dwarven Plumbing Authority.

[Bricks]

I think your wells would have to be dead-even with the rivers to avoid overflowing, in theory.  If you allow the water to flow diagonally only, it will lose its pressure.  (Ninja'd!)  I think pumped water also loses its pressure, which is less.... exploity.  One alternative is to let the water run out on the edge of the map through a cavern.

[MaxMan]

Did you know; forcing water through diagonals resets water pressure!

So something like this will prevent flooding (note, image is top-down, it's all on the same z level).

Code: [Select]

######   
~~~### 
###~~~ 
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This message brought to you by the Dwarven Plumbing Authority.

I'll definitely have to try that, this would come in handy since my mess hall is on the bottom floor and needs a well in the middle. If that fails I think I'll go with a water reservoir and a floodgate.

[MaxMan]

As for the elves than I think it would be better if I just stop trading with them.

[Yarn]

As for the elves than I think it would be better if I just stop trading with them.

Violently I presume?

[Sowelu]

Be VERY CAREFUL when using floodgates under pressure.  Always use an airlock system, instead of "I'll close the gate manually"!  There are cases where the water will transmit huge amounts of water instantly, when under extreme pressure.  I think it might be able to do that UP wells, too.  Airlocks!

[MrWiggles]

In this case, waterlocks.

[Retro]

A good waterlock/baffle system idea: (p and b being doors)

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OOOOOOOOOOOO
......p.....
OOOOOOdOOOOO
     OOO

Water enters from the left. If you want pressurized water, you open both doors. If you want depressurized water, you close only door 'p' and it'll act as a baffle. If you want the water system off, close q as well.

Someone used a setup like this to safely tap the bottom of the ocean without instaflooding his fort. It was actually rather safe.

[Shinziril]

You could even use something similar (diagonal door) as an "airlock" between submerged and dry portions of a fortress with amphibious creatures (at least, if not pathing through water wasn't hardcoded for fortress mode).  A little water would spill out through the diagonal door, but you could probably just let it evaporate.

[Hyndis]

Diagonals remove water pressure. You can even use the mostly highly pressurized water if you move it through a diagonal, and you will always be perfectly safe.

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XXXX.X
XXX.XX
XX.XXX
X.XXXX
......
......

You actually only need a single diagonal, but I love thick walls, at least 2-3 layers thick. This layout, viewed from top down, is 100% safe. You can put in some doors, bridges, or floodgates in those diagonal tiles if you want to block off the flow of water.

[Sowelu]

Oh yeah--Also remember that this version of DF also has gremlins sneaking back in to mess with levers again, or at least I see them a lot more than I did in the last version.

[Asehujiko]

A row of metal bins full of burning lignite blocks can burn down a large part of the ocean, giving you plenty of space to work in, at surface conditions.

[MMad]

Did you know; forcing water through diagonals resets water pressure!

So something like this will prevent flooding (note, image is top-down, it's all on the same z level).

Hehe, sure, that will work - until Toady fixes that bug.