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[Dunamisdeos]

So after a hiatus on the forums, I return to this

Spoiler (click to show/hide)

http://www.bay12forums.com/smf/index.php?topic=105287.msg3117995#msg3117995

Yeah, ok. Sorry 'bout the double threading and all, my bad. The new title should be more to thine liking. Anyway, I'm still having this problem. Let me put out some things.

This post is about an issue where grates are deconstructed, fast enough for me to suddenly notice that every grate is either in the garbage pile or sitting next to its hole without my ever actually SEEING a dwarf take it apart.
Here is some more info based on other player's suggestions.

1: As far as freezing water goes, I have some on the MAP, but none near the grates in question.
2: I have no angry dwarves yet. It's a small fort of 33 dwarves, so it's easy to keep track of.
3: Since the original post, I have fired the bookkeeper. This completely removes any chance of mass dumping, as the grates are 15z apart, and do not fit on the same screen horizontally. I cannot D B D them without direct effort. It has happened since.
4: @Elone: Stop being funny, you are ruining my perfectly good mad. 
5: It has happened 3 times, but only on the FIRST occasion were the grates also dumped, apparantly without my knowledge. I have used grates on previous forts without seeing this.
6: I have not breached the caves. I have not had an invasion OR even an ambush.
7: The fort is in a temperate, hilly woodland region with no evil/good biome, and average savagery. There are no natural Building Destroyers on the map, save for some tamed cave crocodiles (2) which are pastured behind a locked door until they decide to breed. The enterance is where one set of grates are, and they let a 15z waterfall fall through the entry bridge while letting dwarves continue through. The falls are 4 tiles wide, just like the stream. There is also a set of grates at the top of the falls, to prevent idiot wild turkeys and ducks (occasionally dwarves) from nosediving off of the falls and splattering on the entry bridge. They occassionally land on the grates below, but have never been directly observed to damage the grates. The last set of grates is sequestered inside the fort, and is used to fish through to aforementioned stream. They always are seen dissassembled at the same time, its all or none. What do?



---------Original Post-------------
Anyone have idea why my dwarves suddenly decided the EVERY SINGLE ROCK GRATE IN THE FORT needed to be dumped? I lost some important dwarves to this crap. I haven't even opened the Stock screen (wherein one might accidentally mass dump something) since i BEGAN the fort. How does this happen? Nothing can come up underneath to destroy them, right? Things can't destroy a built object from below, that's why hatches work.
-------------------------------------

[Dunamisdeos]

Ok look im sorry for the super inflammatory subject but I was SUPER MAD. 

So any ideas? It happened again and I have no idea why.

[Lagslayer]

Did something come by and damage all the grates?  A tantruming dwarf is capable of this, if your populace is angry.

Or were the grates already installed or in the stockpile?

Otherwise, perhaps you accidentally designated them to be dumped with something else. Were you trying to dump a bunch of stones or something? Perhaps the grate stockpile was accidentally included.

Or was magma involved? If so, not all rocks are magma-safe. If the exposure didn't last very long, they may have been only damaged beyond usefulness instead of melted completely.

We need more info. what exactly were you doing?

[Garath]

did they really get dumped to a garbage zone or brought to a stockpile?

[Dunamisdeos]

Thanks so much for reading this thread and helping =)

Well, The grates are at the entrance to the fort, which is behind a natural, 13z waterfall. The grates are in place to allow the waterfall to pass through the entry bridge (not a g bridge, just flooring) without flooding it. I've also got some grates set up in a small room further down the river (bout 20 away on a different z from the bridge). Occassionally, wild turkeys skydive off the top having fallen into the river and splat upon a grate. This hadn't ever damaged a grate before so I wasn't worried. So I go back later, and the all the grates are all removed now, except for one which has been marked for D, and my favorite dwarf has drowned underneath. you said something about stockpiles, could they have been marked for D, built, and then come back for the actual dumping proccess later? only about 14 dwarves at the time, jobs get put off for awhile. And they were dumped in the garbage, I had to unforbid them to rebuild.

[Garath]

that rules out a tantrum or building destroyers, as those simply get picked up and brought to a stockpile (if they are still in one piece and can be reached) and magma, since that seems a bit unlikely in a waterfall. Dumping can, afaik, only be done by you, so it must have been something the player did. Did you order anything else to be dumped?
I don't know much about waterfalls, so maybe that or the bodies falling down can cause something too, but I don't think so.

[Dunamisdeos]

I mean, I guess I must have. But I didn;t have a bookkeeper at the time, so I couldn't have hit D on ALL GRATES. I was mass dumping stone via d-b-d however, but shouldn't that not effect built ones?

[Garath]

I don't know, so over to someone else.

[Lagslayer]

Did the bridge area cave-in? Caved-in constructions that are not walls and floors will deconstruct, if I am not mistaken. Perhaps they got damaged afterwards, somehow?

[Dunamisdeos]

I'm going to keep an eye out for a repeat. another weird fact: I just checked the one that the dwarf fell off of, and it was still D for dump in its K menu. So it HAD to be some kind off mass dumping accident. I'm totally down with it being my fault, so long as I get to figure out what I did.

[Lagslayer]

I'm going to keep an eye out for a repeat. another weird fact: I just checked the one that the dwarf fell off of, and it was still D for dump in its K menu. So it HAD to be some kind off mass dumping accident. I'm totally down with it being my fault, so long as I get to figure out what I did.

That's what !!Science!! is all about.

[slink]

I don't think Dwarves will dump something that was already built.  However, they will dump something that was marked D while it was in place, after it is unbuilt for some reason.

I had problems once with grates being unbuilt when the water underneath froze in winter and then thawed in spring.  I lost Dwarves to that, too, when they fell down into the lower level of the river when the ice thawed.  Mine was also under a waterfall.

[slothen]

I'm going to keep an eye out for a repeat. another weird fact: I just checked the one that the dwarf fell off of, and it was still D for dump in its K menu. So it HAD to be some kind off mass dumping accident. I'm totally down with it being my fault, so long as I get to figure out what I did.

built furniture can be marked for dumping via d-b-d (at least it happens to cages).  However, this alone will not cause dwarfs to deconstruct and then dump that furniture.
once an item is dumped, the dump designation is removed, and the item is marked as forbidden.
if there is any open space adjacent to the active dumping zone (including diagonals), the dumped item will be dropped over that space.  Dwarves will (iirc) open hatches to do this.

[agatharchides]

I don't think Dwarves will dump something that was already built.  However, they will dump something that was marked D while it was in place, after it is unbuilt for some reason.

I had problems once with grates being unbuilt when the water underneath froze in winter and then thawed in spring.  I lost Dwarves to that, too, when they fell down into the lower level of the river when the ice thawed.  Mine was also under a waterfall.

This. If you ran the dump selector over the grates then they got marked for dumping. They won't be deconstructed but as soon as they are down for any reason, off to the garbage pile they go. The same is true for traps and any other building.

[Loud Whispers]

Designations now carry over z lvls... I kinda preferred the .31 system... Anyways, that's probably how you ended up dumping them by accident