Dwarf Fortress Wiki - User contributions [en]

40d Talk:Pressure plate

2009-11-17T19:26:07Z

Winner: added link to test thread

Approximately how long after a pressure plate is stepped on will it's effects happen?
For instance, I have a pressure plate. Two squares away is a pit trap linked to the plate. Will that work at all?--[[User:Tarsier|Tarsier]] 22:50, 7 November 2007 (EST)

:Well, consider the fact that different creatures move at different speeds, the trap may be too fast or too slow for them, or it might be just right, you can't be sure until you test it. Have some captured goblin run through it and have a cage trap a little further in case they make it through alive. If i were you, I would make at least 2 tile long pit trap. --[[User:Digger|Digger]] 23:28, 25 February 2008 (EST)

::The higher quality your mechanisms are, the faster they work, or so the rumor goes. --[[User:Chrispy|Chrispy]] 13:49, 26 March 2008 (EDT)

:::That rumor holds no merit with bridges. Yes, I counted the frames. --[[User:Savok|Savok]] 15:47, 26 March 2008 (EDT)

== More detailed instructions? ==

Might be worth adding to the article instructions on common operations with pressure plates. For example, how do you use a plate to close a floodgate? Does the plate open, close or toggle the gate? Should it be set to activate when the water/magma level is low or high? etc. [[User:Runspotrun|Runspotrun]] 15:37, 27 November 2007 (EST)
:Heh. Just figured it out. Is it correct? [[User:Runspotrun|Runspotrun]] 17:00, 27 November 2007 (EST)

== Do pressure plates work with civilians? ==

I have the setup mentioned on the page, to make a Pressure plate semi-permanent, however, even though the plate is set to minumum dwarven weight, maximum "any" weight, and so civilians trigger the plate.. it won't make the hatch I connected it to set to "open". I've remade it twice and Dan (the dwarf on the plate) is getting thirsty from standing on and off the plate all day.
So is this a big of some sorts where regular civilians cant trigger pressure plates? If it is, it should be tested by someone else and mentioned on the page. --[[User:Emeralddragon2|Emeralddragon2]] 19:17, 19 June 2008 (EDT)
:Aye, there is currently a bug where citizens can't trigger pressure plates, however pets can set off citizen plates. Hopefully this'll be fixed next game update. --[[User:Kyace|Kyace]] 20:42, 1 July 2008 (EDT)

== Resetting "One Use" Pressure Plates ==

Can you reset "one use" pressure plates or are they literally one use? The article seems to imply that one use plates can never be used again once used, which doesn't make sense to me. --[[User:Xonara|Xonara]] 13:41, 1 July 2008 (EDT)
:I'm not 100% sure but I believe what it means is that to reset it you have to dismantle it and then rebuild it from scratch.--[[User:Toloran|Toloran]] 23:18, 18 August 2008 (EDT)
On a similar note, do you regain the mechanism used in the plate when it deconstructs? or does it just disappear completely?--[[User:Shabang50|Shabang50]] 14:19, 29 December 2008 (EST)
:Belated answer, I suppose, but the answer is, one-use pressure plates instantly deconstruct when used, leaving a blank spot with a mechanism lying next to it. --[[User:Corona688|Corona688]] 22:58, 26 April 2009 (UTC)

== Caravan/Diplomat Trigger? ==

Do peaceful NPCs count as "civilians" for the purpose of pressure plates? Inquiring trapmasters must know. --[[User:Delcan|Delcan]] 21:53, 6 March 2009 (MST)
:I'm wondering the same thing, I guess I'll just have to finish my goblin dropper and find out :D. I'll edit the page when I know [[User:Dangerous Beans|Dangerous Beans]] 04:26, 19 April 2009 (UTC)
:Friendly NPCs seem to be considered civilians. [[User:Dangerous Beans|Dangerous Beans]] 05:39, 19 April 2009 (UTC)
::I recently had an entrance pressure plate setup for the full weight range and setup to trigger on civilians too. The friendly dwarven liaison did not trigger the pressure plate. --[[User:Safariman|Safariman]] 09:17 19 April 2009 (CEST)

== TRAPAVOID and pressure plates ==

A bunch of orcs just ran right over my dwarven atomsmasher trap (pressure plates + bridge + all civilians get the fuck inside NOW) without triggering it. Apparently TRAPAVOID affects pressure plates, too. [[User:InsanityPrelude|InsanityPrelude]] 03:09, 9 April 2009 (UTC)

==Delays==
For pressure plates triggered by water, I'm observing that the pressure plate itself takes an additional 100 ticks to reset after the water is removed, meaning that a [[repeater]] based around a pressure plate and bridges/floodgates has a minimum period of 300 ticks. --[[User:Quietust|Quietust]] 20:25, 6 August 2009 (UTC)

==Pressure plates in adventure mode?==
So I heard ordinary traps don't work in adventure mode, but what about pressure plates? Are there any parameters under which they will still function? Like, if I wanted to build a complex mechanism involving sending water through a series of pressure plates to do... something, would that just not work when I visit the fortress?
Because that would be LAME.
[[User:Frogwarrior|Frogwarrior]] 21:35, 20 August 2009 (UTC)
:If pressure plates fall under traps for this, you can edit the init.txt file to make traps work in adventurer mode. [[User:Shardok|Shardok]] 21:58, 20 August 2009 (UTC)
:Just did a tiny test fortress on a throwaway world. They don't work in adventure mode. With traps enabled, I'm getting a weird freeze thing happening which opens up a second window. I haven't the foggiest idea what is going on. --[[User:Pickle|Pickle]] 10:04, 22 August 2009 (UTC)

==Build order causes delays==
I'm linking so this thread doesn't get lost.
It was found that when you build the bridge before you build a pressure plate the delay is 100 ticks, when you biuld it after the delay is 101 ticks.
[http://www.bay12games.com/forum/index.php?topic=39962.45]
[[User:winner|winner]] 11:25, 17 november 2009 (PST)

User talk:Winner

2009-09-26T19:16:02Z

Winner:

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Hi. There are a lot of templates that are used - one is the "key" template, to distinguish keyboard keys. <nowiki>{{k|Enter}}</nowiki> = {{k|Enter}}, <nowiki>{{k|tab}}</nowiki> = {{k|tab}}, <nowiki>{{k|any key}}</nowiki> = {{k|any key}}- you get it. Sometimes presented combined with the associated mnemonic, as with the {{k|b}}uild {{k|C}}onstruction key sequences, or whatever. For more, see [[template]], click on link there. Readya later. --[[User:Albedo|Albedo]] 18:57, 26 September 2009 (UTC)
:thank you --[[User:winner|winner]] 12:15, 26 September 2009 (PST)

40d Talk:Bridge

2009-09-26T15:44:33Z

Winner:

==Fluids vs bridges==
Does a raised bridge prevent the flow of fluids? Guess I'll experiment and see if I can answer my own question. [[User:Yvain|Yvain]] 21:21, 29 February 2008 (EST)
:Yes. [[User:VengefulDonut|VengefulDonut]] 04:55, 1 March 2008 (EST)

==picture: south-raising drawbridge==
Here's a picture of a bridge that raises South, to clear up any confusion over which direction bridges raise. [[User:Basilisk|Basilisk]] 18:03, 27 March 2008 (EDT)
{{qd|cols=8
|╔|═|╗|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|╚|═|╝|.|╞|═|╡|.
|.|.|.|.|.|.|.|.}}

== Items... ==

When a creature is crushed by a bridge, what happens to the items they had?--[[User:Lordmick134|Lordmick134]]

:When the bridge lowers, it completely ans permanently destroys anything it crashes on. So, there will be absolutely nothing under bridge, when it raises back.--[[User:Dorten|Dorten]] 03:29, 4 April 2008 (EDT)

::Not true! I had trapped a goblin inside a room with a bridge in it, and set the lever connected to the bridge to be repeatedly pulled. The goblin was stunned at most.--[[User:CrazyMcfobo|CrazyMcfobo]] 09:37, 16 April 2008 (EDT)

:::The goblin was likely ''flung'' from the bridge after stepping onto the extended bridge which then raised with the goblin still on it. Crushing is definitely an irrevocable and utter destruction. --[[User:JT|JT]] 16:30, 20 April 2008 (EDT)

== Channeling ==

Checked the [[channel]]ing article, nothing there, either. I have a bridge that raises to the right to form a wall, part of my outer defensive perimeter. I was digging a channel around the fortification wall and wanted to channel under the bridge. I raised the bridge ... I cannot channel. It never creates the flashy 'this is gonna be channeled' designation anywhere where the bridge could lay over. I can channel any where else. I can also remove the bridge, channel what I want, and replace the bridge just fine. What gives? Is this a known bug? --[[User:Geofferic|Geofferic]] 02:35, 29 May 2008 (EDT)

:As far as I know you can't dig on constructions. When the bridge is raised it is still considered to be constructed there. (or something like that) I had the same problem with some retracting bridges. To fix it I just removed the bridges and dug the channels, and then rebuilt them. --[[User:Lotus|Lotus]] 10:13 (CST) June 11, 2008

::This is particularly applicable to the process of obsidian mass production. If you have a bridge-held reservoir at Z-level 1, and a magma reservoir at Z-level 0, you will have to destroy and rebuild (and re-mechanize) your bridges every time you make obsidian. To solve this problem, I re-routed my magma to Z-level -1, and left Z-level 0 as empty space. I also re-routed my access paths so that miners will arrive in Z-level 0 from the west side, (and channel East to West, one row at a time) and my stone haulers will arrive in the northeast corner, so they can start hauling stone as soon as it is channeled out. Although this took several false starts, it is now a highly efficient system. If I ever do it again, however, I will build MUCH bigger reservoirs... And way wider channels for the magma. It takes FOREVER to fill my magma buffer... Would pumping the magma fix this? --[[User:Wattj|wattj]] 17:26, 1 February 2009 (EST)
:::Probably. Pumped magma behaves differently, while the pump is on.--[[User:Zchris13|Zchris13]] 05:23, 24 May 2009 (UTC)

== Bridges as a temporary wall ==

I want to build a wall by pulling a lever, to block off a tunnel three squares wide.
It is a mine tunnel with no channel above it.

How long should the bridge be?

It looks like this:
<div style="font-family: monospace; white-space: pre; line-height: 126.5%"><nowiki>
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ò▒▒▒
.........╥.........
.........║.........
.........╨.........
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
</nowiki></div>

[[User:GarrieIrons|GarrieIrons]] 05:12, 3 June 2008 (EDT)

Well, you have to be careful. Don't forget, by raising a bridge, you can potentially obliterate your dwarves in the process. So try not to make it too wide. --[[User:AlexFili|AlexFili]] 05:41, 3 June 2008 (EDT)

:My question is, if I make it too long will it smash into the roof or anything?[[User:GarrieIrons|GarrieIrons]] 06:09, 3 June 2008 (EDT)

::As far as I know of, it won't smash into the roof. The only concern is that if the bridge is too long, a dwarf may get accidently crushed. --[[User:AlexFili|AlexFili]] 06:14, 3 June 2008 (EDT)

:::Buildings that span multiple/variable z-levels are, at the current time, not possible. So, just build a 1x3 bridge, set it to raise west or east, and you have a wall! A toggleable wall! --[[User:Savok|Savok]] 09:09, 3 June 2008 (EDT)

::::I'd suggest doing a 2x bridge, as you'll have to track down the lever anytime you're curious as to whether the bridge is up or down, as a 1x or x1 bridge looks the same raised or lowered when raised on it's short axis. (e.g. the bridge above would look the same raised or lowered.) --[[User:N9103|Edward]] 09:59, 18 June 2008 (EDT)

== Retractable/drawbridge ==

How can you specify which type of bridge you want to build? --[[User:AlexFili|AlexFili]] 05:45, 3 June 2008 (EDT)

:When you go to place a bridge, by default it retracts. If you press wadxs you change the direction it raises: w = north, a= west, d=east, x=south, s=retracts. I don't know how to set the direction it retracts though.[[User:GarrieIrons|GarrieIrons]] 06:12, 3 June 2008 (EDT)

::So if it retracts, it creates an impassable wall? -[[User:AlexFili|AlexFili]] 06:15, 3 June 2008 (EDT)

:::No, it disappears. If it raises, it creates an impassable wall, whose direction is the same as the raise direction. Try it out.
:::And, Garrie, it isn't possible to set retract direction since there is no such thing. --[[User:Savok|Savok]] 09:09, 3 June 2008 (EDT)

::::Well I guess it doesn't really matter which way it retracts... although if a bridge is built outward from a cliff running east-west out to the chasm which is to the north then obviously the bridge retracts back to the edge it is anchored at (it can hardly retract back into mid-air...).[[User:GarrieIrons|GarrieIrons]] 23:22, 6 June 2008 (EDT)

:::::Oh, really? --[[User:Savok|Savok]] 23:32, 6 June 2008 (EDT)

::::::well I guess applying common sense to DF might not be the best idea... but common sense would [bold]suggest [/bold] the bridge retracts back to where it was built from.[[User:GarrieIrons|GarrieIrons]] 00:03, 7 June 2008 (EDT)

:::::::We don't use BBcode here. I don't think that even is BBcode, but it is in that style. To make '''bold text''', type <code><nowiki>'''bold text'''</nowiki></code>.
:::::::And you're right that applying common sense to DF doesn't work. Even the least of peasants can carry thousands of pounds pebbles in a backpack. --[[User:Savok|Savok]] 09:06, 7 June 2008 (EDT)
::::::::Actually, they carry thousand pound boulders in their hands. And cut it into blocks with their '''mind'''--[[User:Zchris13|Zchris13]] 05:24, 24 May 2009 (UTC)

== Bridge-on-bridge action ==

I've just added a note about retractable bridges being able to be built using existing bridges as support. However I'm currently unable to test what happens when an intermediary bridge is retracted or raised (I have no stone for mechanisms!). I'm assuming that any bridges relying on the retracted/raised bridge for support will collapse, but it should be tested (and noted), if someone else has the time and inclination! [[User:Raumkraut|Raumkraut]] 12:04, 14 June 2008 (EDT)

: I can confirm that when the first bridge is retracted the second one deconstructs. And also if you choose to do your testing using extreme cliffs and "accidently" make 6 of your 7 dwarves stand on the second bridge then they will die a horrible death after falling 18 stories. --[[User:Makuus|Makuus]] 16:54, 16 June 2008 (EDT)

::What if you raise both of the bridges at the same time? --[[User:AlexFili|AlexFili]] 05:48, 17 June 2008 (EDT)

:::The same thing happens, the second bridge deconstructs again --[[User:Makuus|Makuus]] 13:48, 22 June 2008 (EDT)
::::I attempted this quite some time ago, I think. I had something like ten bridges in a row built off a cliff, and retracted them all at once with one lever. All but the first one (which was connected to the cliff) shattered into stones instantly. --[[User:SL|SL]] 10:29, 23 July 2008 (EDT)

== lockdown system ==

in one of my old forts i had a setup so if the opponent got near my bridges a lever would be pulled and the opponents would fall into the lava with a godlike imp in it, it would use multiple bridges however and i would have to rebuild atleast 1, it was sort of like a tesselation of crosses

== Flying Bridge ==
Build stairs up. Build stairs down atop it. Build a retracting bridge extending into open air from the downstairs. Link the retracting bridge to a lever. Pull the lever to retract the bridge. Deconstruct the down stairs. Deconstruct the up stairs. Pull the lever. Remove the lever. Bridge flies. [[User:Rkyeun|Rkyeun]] 11:38, 18 July 2008 (EDT)
:Shame this can't be used to build eg. twisty retractable catwalks due to the above confirmations in Bridge-on-bridge action. :/ --[[User:Heron|Heron]] 09:46, 23 July 2008 (EDT)
::You could probably get something similar by just having occasional pillars sticking up, constructed by building towers of stairs, building a wall adjacent, then deconstructing the stairs. If you have each bridge anchored to one pillar, you ought to be able to get many retractable bridges in a sequence. --[[User:AlexChurchill|AlexChurchill]] 12:08, 23 July 2008 (EDT)
:::More testing. Retracted bridges never deconstruct. Make a chain as long as you like by keeping them all retracted until scaffolding is removed. Un-retracting bridges never deconstuct nor cause deconstruction. To make a path of multiple flying bridges build a scaffold for the first bridge, retract it, deconstruct the scaffold, build the second scaffold, retract that bridge, deconstruct that scaffold, and so forth. You can then unretract all bridges in any order and they'll all stay up. Retracting them again in any order caused them to fall. [[User:Rkyeun|Rkyeun]] 09:00, 2 September 2008 (EDT)

== Stockpiles under bridges ==

I tried to make a refuse stockpile with a drawbridge over top, and I couldn't place the stockpile where the bridge would lower onto. Can anyone else confirm this for the new version? [[User:Falcondude|Falcondude]] 11:05, 31 July 2008 (EDT)
:Yeah, that won't work. If you are trying to make a garbage compactor, make a ledge and designate a garbage dump with (i) that will drop the items where the bridge will close.[[User:Trevlyn13|Trevlyn13]]

::You don't need to make a ledge. Just retract the bridge (so you aren't dumping ontop of it) and make a garbage dump zone where the bridge will close. Voila --[[User:Sinergistic|Sinergistic]] 01:03, 21 January 2009 (EST)

== Drawbridge vs colossus ==

Yesterday a bronze colossus got trapped between my 2 moats, right under the drawbridge. It was too close to the catapults so that the operators wouldn't fire them, so I tried to crush it with the bridge.
My bridge broke instead.
(later I killed it by shooting hundreds of arrows)
If anyone could replicate this, and also experiment with other megabeasts....
(actually I made this account to tell people about this)
[[User:nautilusfossil|nautilusfossil]]
:As far as I know, Dwarven Atom Crushers™ break on megabeasts and demons. Cage Traps are the way to go for megabeasts, but demons are immune against them.
:I don't know about semi-megabeasts considering bridge-breaking. [[User:MC Dirty|MC Dirty]] 18:17, 19 September 2008 (EDT)

== Dwarves negative thoughts regarding crushed friends ==

Dwarves respond to friends or family members being crushed by a drawbridge as if they'd been killed & then not buried: "He was forced to endure the decay of a sibling lately. He lost a sibling to tragedy recently." (I'm certain this was due to the drawbridge, as all the siblings *except* the one that was crushed had these negative thoughts. Nobody else in the family had been killed by anything yet.) --[[User:Sev|Sev]] 14:49, 2 September 2008 (EDT)

== Melty mechanisms... redux? ==

Curiosity kills my dwarves - I'm not wasting the time to do this myself. Will mechanisms melt out of bridges that are submerged in magma? --[[User:GreyMario|GreyMaria]] 22:31, 28 September 2008 (EDT)
:I have no idea, this is a good question. While writing a reply of my thoughts I kept re-thinking some things. If Magma passes over the bridge I'm pretty certain that the mechanism will act like a flood gate's. It will not melt away as long as you don't raise the bridge. If you do raise the bridge, the mechanism will melt away and the bridge could do a number of things. Before I keep typing about what I think will/could happen, I'm just going to go ahead and pass on a wall of text. [[User:Dakira|Dakira]] 1844, 28 September 2008 (PST)
::But fluids cannot enter the tile of a raised bridge, whereas they can enter the tile of a lowered bridge. In this way, a raised bridge would be analogous to a _closed_ floodgate, and a lowered bridge to an _open_ one. [[User:Random832|Random832]] 21:51, 25 November 2008 (EST)

GO GO GADGET TEST MELTY MECHANISMS --[[User:GreyMario|GreyMaria]] 00:25, 16 January 2009 (EST)
:Nope, doesn't work. The mechanisms melted... and just when I was making to re-pull the lever, too. D: --[[User:GreyMario|GreyMaria]] 01:05, 16 January 2009 (EST)

== Bridges and wagons? ==

Is is possible for wagons to drive over bridges? I would assume so, but I don't want to get hasty. --[[User:W-dueck|w-dueck]] 23:50, 3 December 2008 (EST)
:yes, anything can pass over them. [[User:Dangerous Beans|Dangerous Beans]] 00:29, 4 December 2008 (EST)
:: Okay, thanks. Now that the mean kobolds can't escape when they steal my stuff, I am free to bludgeon them with random objects! --[[User:W-dueck|w-dueck]] 18:39, 4 December 2008 (EST)
:::You have to spot them first, though. Put war dogs on restraints in a recessed area that leads to the trade depot.--[[User:Maximus|Maximus]] 22:08, 4 December 2008 (EST)

== Indestructible Caravan ==
I needed to test out my whammer slammer bammer on <em>something</em> but no goblins volunteered for so long I was forced to attack the dwarven caravan instead. The mighty bridge swung down upon the lone wagon and was riven like a banana dipped in liquid nitrogen, leaving the wagon unscathed. If we could breed and train war wagons we'd rule the world. The 3-tile-wide parts of it anyway. --[[User:Corona688|Corona688]] 18:55, 9 December 2008 (EST)

:But a single cave swallowman can scuttle an entire wagon in two milliseconds. Maybe wagons count as a megabeast? --[[User:GreyMario|GreyMaria]] 23:00, 9 December 2008 (EST)

:Funny. I dropped a bridge on a Mangrove Wagon yesterday, and the wagon vaporized like any other sap. It was an iron bridge - maybe that's the difference? --[[User:HMS Prancytime|HMS Prancytime]] 16:15, 1 February 2009 (EST)

== Megabeasts break bridges even without atomsmashing? ==

Situation: I captured a Titan and pitted it onto a drawbridge from a platform a Z-level above. The drawbridge is retractable and linked to a level. Logically, pulling the level will make the drawbridge retract and the Titan will plummet to his death.

But it didn't happen. The bridge refuses to budge. I haven't got a message about it whatsoever.

Is it possible for a Titan to break ''any'' drawbridge operation whatsoever no matter the end result?

--[[User:Shurikane|Shurikane]] 22:34, 6 January 2009 (EST)

:<s>Yes. A bridge is a non-construction building. Therefore entities with [BUILDINGDESTROYER] can nuke them.</s> I doubt it. Did you find any mechanisms lying around, like next to the lever? --[[User:GreyMario|GreyMaria]] 00:02, 7 January 2009 (EST)

::Nothing unusual to report. As far as I see, everything should be functioning normally. The Titan, by the way, does not move around. He stays right where I dropped him... --[[User:Shurikane|Shurikane]] 12:25, 7 January 2009 (EST)
::Update: here's what I found out. A megabeast standing on a bridge will prevent said bridge from functioning. In my case, this means a retracting bridge will refuse to retreact unless the megabeast steps off or dies. --[[User:Shurikane|Shurikane]] 11:02, 10 January 2009 (EST)
:::A Zombie Elephant will do the same thing. --[[User:May Cause Drowsiness|May Cause Drowsiness]] 07:29, 25 July 2009 (UTC)

== Rain filling up ponds ==

Hi all. I just noticed something strange. I have a fortress without flowing water where it is hot (the ponds dry up) The evaporation depends on weather it is covered or not (I verified this 40d) But, if it is covered, then it doesn't refill with rain. So I thought, how about a retracting bridge. Nope. Even if it is retracted, the pond doesn't refill when it rains. Oh well. Probably has to do with the construction note above.[[User:Kwieland|Kwieland]] 23:16, 19 January 2009 (EST)

== Building at the end of a bridge ==
As an addition to the info regarding bridges constructed at the end of bridges, apparently you can build walls and floors at the end of bridges as well, but upon completion, they collapse, along with the dwarf who was building it. I only tested with a retracting bridge, but I see no reason the same wouldn't apply to drawbridges. Of course, this information isn't really useful, but a warning on the page would be nice. Actually, I suppose it would make an innovative way of killing off masons. --[[User:Mikaka|Mikaka]] 05:12, 23 April 2009 (UTC)
:I just discovered this the hard way, when my mayor / broker / manager / legendary carpenter / only architect attempted to build a floor at the end of a bridge, only to plummet to his watery death in the ocean. Plans have been drawn to drain the ocean into the aquifer in retaliation. ~ [[User:Eidako|Eidako]] 05:46, 27 June 2009 (UTC)

== Magmapult. ==

If you have a bridge that raises directionally attached to a lever, and it has retaining walls, and everything is magma-proof, can you fill the retainer with magma, pull the switch... would it throw magma like it throws other objects?
--[[User:Roflcopter!|Roflcopter!]] 22:35, 19 August 2009 (UTC)
:An easy experiment to try - let us know how it works out.--[[User:Albedo|Albedo]] 23:41, 19 August 2009 (UTC)
::I tested with water, it does not get flung but it does get atom smashed. --[[User:winner|winner]] 08:41, 26 September 2009 (PST)

== Deconstruction Scaffold ==

Backstory: my new fort's entrance is accessible only via a bridge over the magma pipe, using two 3x10 raising bridges on the edges and a bunch of constructed floors in the middle (and constructed walls along the edges), and I recently decided to rebuild it with 3x2 raising bridges on the edges and retracting bridges in the middle (for dropping goblins into the magma, or for clearing away magma pumped onto the bridge). In order to do this, though, I would need to deconstruct the existing floors, removing the only path out of my fortress (except for the walled-off back door which I'd rather not reopen), so as a test, I attempted to build a retracting bridge '''over''' the floor and then remove the constructed floors underneath it. Amazingly, it worked, and it even left the building materials sitting directly on top of the bridge rather than falling into the magma pipe. --[[User:Quietust|Quietust]] 14:00, 3 September 2009 (UTC)

== Retracting ...bridgeapult? ==

So my fortress entrance is a bridge over a magma pipe (as described above for "deconstruction scaffold"). When I place items on the center retracting bridge and pull the lever to drop them, they fly '''into the air''' before falling down into the magma, some of them ending up on top of the retaining walls. I suspect that once I finish building a floor over the bridge (about 66% done right now), it'll start behaving properly and simply drop the items straight down into the magma. --[[User:Quietust|Quietust]] 03:43, 5 September 2009 (UTC)

== Bridgeapults forum thread ==

The [http://www.bay12games.com/forum/index.php?topic=42111.0 bridgeapults] has experiments to test what exactly bridges do
--[[User:winner|winner]] 08:35, 26 September 2009 (PST)

40d Talk:Bridge

2009-09-26T15:24:54Z

Winner:

==Fluids vs bridges==
Does a raised bridge prevent the flow of fluids? Guess I'll experiment and see if I can answer my own question. [[User:Yvain|Yvain]] 21:21, 29 February 2008 (EST)
:Yes. [[User:VengefulDonut|VengefulDonut]] 04:55, 1 March 2008 (EST)

==picture: south-raising drawbridge==
Here's a picture of a bridge that raises South, to clear up any confusion over which direction bridges raise. [[User:Basilisk|Basilisk]] 18:03, 27 March 2008 (EDT)
{{qd|cols=8
|╔|═|╗|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|║|+|║|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}|{{qd/ch{{!}}≈{{!}}00F}}
|╚|═|╝|.|╞|═|╡|.
|.|.|.|.|.|.|.|.}}

== Items... ==

When a creature is crushed by a bridge, what happens to the items they had?--[[User:Lordmick134|Lordmick134]]

:When the bridge lowers, it completely ans permanently destroys anything it crashes on. So, there will be absolutely nothing under bridge, when it raises back.--[[User:Dorten|Dorten]] 03:29, 4 April 2008 (EDT)

::Not true! I had trapped a goblin inside a room with a bridge in it, and set the lever connected to the bridge to be repeatedly pulled. The goblin was stunned at most.--[[User:CrazyMcfobo|CrazyMcfobo]] 09:37, 16 April 2008 (EDT)

:::The goblin was likely ''flung'' from the bridge after stepping onto the extended bridge which then raised with the goblin still on it. Crushing is definitely an irrevocable and utter destruction. --[[User:JT|JT]] 16:30, 20 April 2008 (EDT)

== Channeling ==

Checked the [[channel]]ing article, nothing there, either. I have a bridge that raises to the right to form a wall, part of my outer defensive perimeter. I was digging a channel around the fortification wall and wanted to channel under the bridge. I raised the bridge ... I cannot channel. It never creates the flashy 'this is gonna be channeled' designation anywhere where the bridge could lay over. I can channel any where else. I can also remove the bridge, channel what I want, and replace the bridge just fine. What gives? Is this a known bug? --[[User:Geofferic|Geofferic]] 02:35, 29 May 2008 (EDT)

:As far as I know you can't dig on constructions. When the bridge is raised it is still considered to be constructed there. (or something like that) I had the same problem with some retracting bridges. To fix it I just removed the bridges and dug the channels, and then rebuilt them. --[[User:Lotus|Lotus]] 10:13 (CST) June 11, 2008

::This is particularly applicable to the process of obsidian mass production. If you have a bridge-held reservoir at Z-level 1, and a magma reservoir at Z-level 0, you will have to destroy and rebuild (and re-mechanize) your bridges every time you make obsidian. To solve this problem, I re-routed my magma to Z-level -1, and left Z-level 0 as empty space. I also re-routed my access paths so that miners will arrive in Z-level 0 from the west side, (and channel East to West, one row at a time) and my stone haulers will arrive in the northeast corner, so they can start hauling stone as soon as it is channeled out. Although this took several false starts, it is now a highly efficient system. If I ever do it again, however, I will build MUCH bigger reservoirs... And way wider channels for the magma. It takes FOREVER to fill my magma buffer... Would pumping the magma fix this? --[[User:Wattj|wattj]] 17:26, 1 February 2009 (EST)
:::Probably. Pumped magma behaves differently, while the pump is on.--[[User:Zchris13|Zchris13]] 05:23, 24 May 2009 (UTC)

== Bridges as a temporary wall ==

I want to build a wall by pulling a lever, to block off a tunnel three squares wide.
It is a mine tunnel with no channel above it.

How long should the bridge be?

It looks like this:
<div style="font-family: monospace; white-space: pre; line-height: 126.5%"><nowiki>
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ò▒▒▒
.........╥.........
.........║.........
.........╨.........
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
</nowiki></div>

[[User:GarrieIrons|GarrieIrons]] 05:12, 3 June 2008 (EDT)

Well, you have to be careful. Don't forget, by raising a bridge, you can potentially obliterate your dwarves in the process. So try not to make it too wide. --[[User:AlexFili|AlexFili]] 05:41, 3 June 2008 (EDT)

:My question is, if I make it too long will it smash into the roof or anything?[[User:GarrieIrons|GarrieIrons]] 06:09, 3 June 2008 (EDT)

::As far as I know of, it won't smash into the roof. The only concern is that if the bridge is too long, a dwarf may get accidently crushed. --[[User:AlexFili|AlexFili]] 06:14, 3 June 2008 (EDT)

:::Buildings that span multiple/variable z-levels are, at the current time, not possible. So, just build a 1x3 bridge, set it to raise west or east, and you have a wall! A toggleable wall! --[[User:Savok|Savok]] 09:09, 3 June 2008 (EDT)

::::I'd suggest doing a 2x bridge, as you'll have to track down the lever anytime you're curious as to whether the bridge is up or down, as a 1x or x1 bridge looks the same raised or lowered when raised on it's short axis. (e.g. the bridge above would look the same raised or lowered.) --[[User:N9103|Edward]] 09:59, 18 June 2008 (EDT)

== Retractable/drawbridge ==

How can you specify which type of bridge you want to build? --[[User:AlexFili|AlexFili]] 05:45, 3 June 2008 (EDT)

:When you go to place a bridge, by default it retracts. If you press wadxs you change the direction it raises: w = north, a= west, d=east, x=south, s=retracts. I don't know how to set the direction it retracts though.[[User:GarrieIrons|GarrieIrons]] 06:12, 3 June 2008 (EDT)

::So if it retracts, it creates an impassable wall? -[[User:AlexFili|AlexFili]] 06:15, 3 June 2008 (EDT)

:::No, it disappears. If it raises, it creates an impassable wall, whose direction is the same as the raise direction. Try it out.
:::And, Garrie, it isn't possible to set retract direction since there is no such thing. --[[User:Savok|Savok]] 09:09, 3 June 2008 (EDT)

::::Well I guess it doesn't really matter which way it retracts... although if a bridge is built outward from a cliff running east-west out to the chasm which is to the north then obviously the bridge retracts back to the edge it is anchored at (it can hardly retract back into mid-air...).[[User:GarrieIrons|GarrieIrons]] 23:22, 6 June 2008 (EDT)

:::::Oh, really? --[[User:Savok|Savok]] 23:32, 6 June 2008 (EDT)

::::::well I guess applying common sense to DF might not be the best idea... but common sense would [bold]suggest [/bold] the bridge retracts back to where it was built from.[[User:GarrieIrons|GarrieIrons]] 00:03, 7 June 2008 (EDT)

:::::::We don't use BBcode here. I don't think that even is BBcode, but it is in that style. To make '''bold text''', type <code><nowiki>'''bold text'''</nowiki></code>.
:::::::And you're right that applying common sense to DF doesn't work. Even the least of peasants can carry thousands of pounds pebbles in a backpack. --[[User:Savok|Savok]] 09:06, 7 June 2008 (EDT)
::::::::Actually, they carry thousand pound boulders in their hands. And cut it into blocks with their '''mind'''--[[User:Zchris13|Zchris13]] 05:24, 24 May 2009 (UTC)

== Bridge-on-bridge action ==

I've just added a note about retractable bridges being able to be built using existing bridges as support. However I'm currently unable to test what happens when an intermediary bridge is retracted or raised (I have no stone for mechanisms!). I'm assuming that any bridges relying on the retracted/raised bridge for support will collapse, but it should be tested (and noted), if someone else has the time and inclination! [[User:Raumkraut|Raumkraut]] 12:04, 14 June 2008 (EDT)

: I can confirm that when the first bridge is retracted the second one deconstructs. And also if you choose to do your testing using extreme cliffs and "accidently" make 6 of your 7 dwarves stand on the second bridge then they will die a horrible death after falling 18 stories. --[[User:Makuus|Makuus]] 16:54, 16 June 2008 (EDT)

::What if you raise both of the bridges at the same time? --[[User:AlexFili|AlexFili]] 05:48, 17 June 2008 (EDT)

:::The same thing happens, the second bridge deconstructs again --[[User:Makuus|Makuus]] 13:48, 22 June 2008 (EDT)
::::I attempted this quite some time ago, I think. I had something like ten bridges in a row built off a cliff, and retracted them all at once with one lever. All but the first one (which was connected to the cliff) shattered into stones instantly. --[[User:SL|SL]] 10:29, 23 July 2008 (EDT)

== lockdown system ==

in one of my old forts i had a setup so if the opponent got near my bridges a lever would be pulled and the opponents would fall into the lava with a godlike imp in it, it would use multiple bridges however and i would have to rebuild atleast 1, it was sort of like a tesselation of crosses

== Flying Bridge ==
Build stairs up. Build stairs down atop it. Build a retracting bridge extending into open air from the downstairs. Link the retracting bridge to a lever. Pull the lever to retract the bridge. Deconstruct the down stairs. Deconstruct the up stairs. Pull the lever. Remove the lever. Bridge flies. [[User:Rkyeun|Rkyeun]] 11:38, 18 July 2008 (EDT)
:Shame this can't be used to build eg. twisty retractable catwalks due to the above confirmations in Bridge-on-bridge action. :/ --[[User:Heron|Heron]] 09:46, 23 July 2008 (EDT)
::You could probably get something similar by just having occasional pillars sticking up, constructed by building towers of stairs, building a wall adjacent, then deconstructing the stairs. If you have each bridge anchored to one pillar, you ought to be able to get many retractable bridges in a sequence. --[[User:AlexChurchill|AlexChurchill]] 12:08, 23 July 2008 (EDT)
:::More testing. Retracted bridges never deconstruct. Make a chain as long as you like by keeping them all retracted until scaffolding is removed. Un-retracting bridges never deconstuct nor cause deconstruction. To make a path of multiple flying bridges build a scaffold for the first bridge, retract it, deconstruct the scaffold, build the second scaffold, retract that bridge, deconstruct that scaffold, and so forth. You can then unretract all bridges in any order and they'll all stay up. Retracting them again in any order caused them to fall. [[User:Rkyeun|Rkyeun]] 09:00, 2 September 2008 (EDT)

== Stockpiles under bridges ==

I tried to make a refuse stockpile with a drawbridge over top, and I couldn't place the stockpile where the bridge would lower onto. Can anyone else confirm this for the new version? [[User:Falcondude|Falcondude]] 11:05, 31 July 2008 (EDT)
:Yeah, that won't work. If you are trying to make a garbage compactor, make a ledge and designate a garbage dump with (i) that will drop the items where the bridge will close.[[User:Trevlyn13|Trevlyn13]]

::You don't need to make a ledge. Just retract the bridge (so you aren't dumping ontop of it) and make a garbage dump zone where the bridge will close. Voila --[[User:Sinergistic|Sinergistic]] 01:03, 21 January 2009 (EST)

== Drawbridge vs colossus ==

Yesterday a bronze colossus got trapped between my 2 moats, right under the drawbridge. It was too close to the catapults so that the operators wouldn't fire them, so I tried to crush it with the bridge.
My bridge broke instead.
(later I killed it by shooting hundreds of arrows)
If anyone could replicate this, and also experiment with other megabeasts....
(actually I made this account to tell people about this)
[[User:nautilusfossil|nautilusfossil]]
:As far as I know, Dwarven Atom Crushers™ break on megabeasts and demons. Cage Traps are the way to go for megabeasts, but demons are immune against them.
:I don't know about semi-megabeasts considering bridge-breaking. [[User:MC Dirty|MC Dirty]] 18:17, 19 September 2008 (EDT)

== Dwarves negative thoughts regarding crushed friends ==

Dwarves respond to friends or family members being crushed by a drawbridge as if they'd been killed & then not buried: "He was forced to endure the decay of a sibling lately. He lost a sibling to tragedy recently." (I'm certain this was due to the drawbridge, as all the siblings *except* the one that was crushed had these negative thoughts. Nobody else in the family had been killed by anything yet.) --[[User:Sev|Sev]] 14:49, 2 September 2008 (EDT)

== Melty mechanisms... redux? ==

Curiosity kills my dwarves - I'm not wasting the time to do this myself. Will mechanisms melt out of bridges that are submerged in magma? --[[User:GreyMario|GreyMaria]] 22:31, 28 September 2008 (EDT)
:I have no idea, this is a good question. While writing a reply of my thoughts I kept re-thinking some things. If Magma passes over the bridge I'm pretty certain that the mechanism will act like a flood gate's. It will not melt away as long as you don't raise the bridge. If you do raise the bridge, the mechanism will melt away and the bridge could do a number of things. Before I keep typing about what I think will/could happen, I'm just going to go ahead and pass on a wall of text. [[User:Dakira|Dakira]] 1844, 28 September 2008 (PST)
::But fluids cannot enter the tile of a raised bridge, whereas they can enter the tile of a lowered bridge. In this way, a raised bridge would be analogous to a _closed_ floodgate, and a lowered bridge to an _open_ one. [[User:Random832|Random832]] 21:51, 25 November 2008 (EST)

GO GO GADGET TEST MELTY MECHANISMS --[[User:GreyMario|GreyMaria]] 00:25, 16 January 2009 (EST)
:Nope, doesn't work. The mechanisms melted... and just when I was making to re-pull the lever, too. D: --[[User:GreyMario|GreyMaria]] 01:05, 16 January 2009 (EST)

== Bridges and wagons? ==

Is is possible for wagons to drive over bridges? I would assume so, but I don't want to get hasty. --[[User:W-dueck|w-dueck]] 23:50, 3 December 2008 (EST)
:yes, anything can pass over them. [[User:Dangerous Beans|Dangerous Beans]] 00:29, 4 December 2008 (EST)
:: Okay, thanks. Now that the mean kobolds can't escape when they steal my stuff, I am free to bludgeon them with random objects! --[[User:W-dueck|w-dueck]] 18:39, 4 December 2008 (EST)
:::You have to spot them first, though. Put war dogs on restraints in a recessed area that leads to the trade depot.--[[User:Maximus|Maximus]] 22:08, 4 December 2008 (EST)

== Indestructible Caravan ==
I needed to test out my whammer slammer bammer on <em>something</em> but no goblins volunteered for so long I was forced to attack the dwarven caravan instead. The mighty bridge swung down upon the lone wagon and was riven like a banana dipped in liquid nitrogen, leaving the wagon unscathed. If we could breed and train war wagons we'd rule the world. The 3-tile-wide parts of it anyway. --[[User:Corona688|Corona688]] 18:55, 9 December 2008 (EST)

:But a single cave swallowman can scuttle an entire wagon in two milliseconds. Maybe wagons count as a megabeast? --[[User:GreyMario|GreyMaria]] 23:00, 9 December 2008 (EST)

:Funny. I dropped a bridge on a Mangrove Wagon yesterday, and the wagon vaporized like any other sap. It was an iron bridge - maybe that's the difference? --[[User:HMS Prancytime|HMS Prancytime]] 16:15, 1 February 2009 (EST)

== Megabeasts break bridges even without atomsmashing? ==

Situation: I captured a Titan and pitted it onto a drawbridge from a platform a Z-level above. The drawbridge is retractable and linked to a level. Logically, pulling the level will make the drawbridge retract and the Titan will plummet to his death.

But it didn't happen. The bridge refuses to budge. I haven't got a message about it whatsoever.

Is it possible for a Titan to break ''any'' drawbridge operation whatsoever no matter the end result?

--[[User:Shurikane|Shurikane]] 22:34, 6 January 2009 (EST)

:<s>Yes. A bridge is a non-construction building. Therefore entities with [BUILDINGDESTROYER] can nuke them.</s> I doubt it. Did you find any mechanisms lying around, like next to the lever? --[[User:GreyMario|GreyMaria]] 00:02, 7 January 2009 (EST)

::Nothing unusual to report. As far as I see, everything should be functioning normally. The Titan, by the way, does not move around. He stays right where I dropped him... --[[User:Shurikane|Shurikane]] 12:25, 7 January 2009 (EST)
::Update: here's what I found out. A megabeast standing on a bridge will prevent said bridge from functioning. In my case, this means a retracting bridge will refuse to retreact unless the megabeast steps off or dies. --[[User:Shurikane|Shurikane]] 11:02, 10 January 2009 (EST)
:::A Zombie Elephant will do the same thing. --[[User:May Cause Drowsiness|May Cause Drowsiness]] 07:29, 25 July 2009 (UTC)

== Rain filling up ponds ==

Hi all. I just noticed something strange. I have a fortress without flowing water where it is hot (the ponds dry up) The evaporation depends on weather it is covered or not (I verified this 40d) But, if it is covered, then it doesn't refill with rain. So I thought, how about a retracting bridge. Nope. Even if it is retracted, the pond doesn't refill when it rains. Oh well. Probably has to do with the construction note above.[[User:Kwieland|Kwieland]] 23:16, 19 January 2009 (EST)

== Building at the end of a bridge ==
As an addition to the info regarding bridges constructed at the end of bridges, apparently you can build walls and floors at the end of bridges as well, but upon completion, they collapse, along with the dwarf who was building it. I only tested with a retracting bridge, but I see no reason the same wouldn't apply to drawbridges. Of course, this information isn't really useful, but a warning on the page would be nice. Actually, I suppose it would make an innovative way of killing off masons. --[[User:Mikaka|Mikaka]] 05:12, 23 April 2009 (UTC)
:I just discovered this the hard way, when my mayor / broker / manager / legendary carpenter / only architect attempted to build a floor at the end of a bridge, only to plummet to his watery death in the ocean. Plans have been drawn to drain the ocean into the aquifer in retaliation. ~ [[User:Eidako|Eidako]] 05:46, 27 June 2009 (UTC)

== Magmapult. ==

If you have a bridge that raises directionally attached to a lever, and it has retaining walls, and everything is magma-proof, can you fill the retainer with magma, pull the switch... would it throw magma like it throws other objects?
--[[User:Roflcopter!|Roflcopter!]] 22:35, 19 August 2009 (UTC)
:An easy experiment to try - let us know how it works out.--[[User:Albedo|Albedo]] 23:41, 19 August 2009 (UTC)

== Deconstruction Scaffold ==

Backstory: my new fort's entrance is accessible only via a bridge over the magma pipe, using two 3x10 raising bridges on the edges and a bunch of constructed floors in the middle (and constructed walls along the edges), and I recently decided to rebuild it with 3x2 raising bridges on the edges and retracting bridges in the middle (for dropping goblins into the magma, or for clearing away magma pumped onto the bridge). In order to do this, though, I would need to deconstruct the existing floors, removing the only path out of my fortress (except for the walled-off back door which I'd rather not reopen), so as a test, I attempted to build a retracting bridge '''over''' the floor and then remove the constructed floors underneath it. Amazingly, it worked, and it even left the building materials sitting directly on top of the bridge rather than falling into the magma pipe. --[[User:Quietust|Quietust]] 14:00, 3 September 2009 (UTC)

== Retracting ...bridgeapult? ==

So my fortress entrance is a bridge over a magma pipe (as described above for "deconstruction scaffold"). When I place items on the center retracting bridge and pull the lever to drop them, they fly '''into the air''' before falling down into the magma, some of them ending up on top of the retaining walls. I suspect that once I finish building a floor over the bridge (about 66% done right now), it'll start behaving properly and simply drop the items straight down into the magma. --[[User:Quietust|Quietust]] 03:43, 5 September 2009 (UTC)

== Bridgeapults forum thread ==

The [http://www.bay12games.com/forum/index.php?topic=42111.0 bridgeapults] has experiments to test what exactly bridges do

40d:Bridge

2009-09-26T15:20:34Z

Winner: brought the information in line with the discoveries in the bridgeapults thread

A '''bridge''' is a building (not a construction) that spans multiple tiles allowing [[dwarves]] to go across [[water]], [[magma]], and other obstructions. Bridges are built from the {{k|b}}uild menu, under brid{{k|g}}e.

A bridge defaults to a single tile in size. You'll need to change the size to suit your needs with the k,h,u,m keys; the bridge's dimensions can be set anywhere up to a square 10 tile on a side. A bridge will require both [[architecture]] and [[masonry]] (or [[carpentry]] or [[metalsmithing]] if [[wood]] or [[metal]] is used) to complete. The material required for a bridge is less than the material required for building an equivalent area of [[floor]] tiles (1 + area/4, rounded down), and when a bridge is deconstructed the materials are deposited on the ground next to where the bridge stood rather than falling down into the open space it spanned.

Unlike raising bridges, which require an area of solid ground, retractable bridges can be built using existing bridges as their sole means of support. However, the same cannot be said of other structures such as floors. The game will allow the structure to be placed, but as soon as it is built, a [[cave-in]] occurs and the unfortunate dwarf constructing it falls to his death ([http://www.bay12games.com/dwarves/dev_bugs.html bug 000436]).

Interestingly, building a bridge over a [[construction|constructed floor]] will allow dwarves to deconstruct the floor ''through'' the bridge without disrupting the path across said floor (especially if the floor is being used to bridge an area). Conveniently, the materials used to construct the floor will be left on top of the bridge, rather than being dropped down below it.

If a bridge is built outside over a [[channel]], anything under the bridge counts as inside for the purpose of preventing [[cave adaptation]] (but not for the "stay inside" [[standing orders|order]]), regardless of whether or not the bridge is actually covering the area.

== Drawbridges ==

A drawbridge can be connected to a [[lever]] or [[pressure plate]]. When the lever is pulled, after a delay of 100 steps the bridge will raise in the direction specified at construction. The direction that a bridge raises can be slightly confusing: if a drawbridge raises to the left, then it forms a wall on the left side when raised. A drawbridge that raises requires a [[floor]] underneath the side towards which it will raise (on the tiles where the "[[wall]]" will form when raised); remember to take this into account when digging.

A drawbridge, when raised will crush anything standing on the tile that becomes a wall, and when lowered it will crush anything that is standing where the drawbridge exists when lowered. This has earned it the name ''[[Dwarven Atom Smasher|dwarven atom-smasher]]''. Some players may consider the crushing power of the drawbridge to be an [[exploit]] — the only units that survive the smash are those with a [SIZE] greater than 10 ( [[megabeast]]s, [[demon]]s, and the [[caravan|wagon]] ). - rather than being crushed, they will cause the bridge to instantly deconstruct.

Any creature standing on a drawbridge when it raises will be flung a between 1 and 11{{verify}} units to the sides. This applies to all units{{verify}}, including flying [[creature]]s who happen to be on the same tile as part of the bridge at the time. The creatures will usually come out from the fling stunned but otherwise uninjured, and flying creatures may drop out of the sky.{{verify}} (To see what happens during a fling, view the [http://mkv25.net/dfma/movie-507 Stone Fling] [http://mkv25.net/dfma/ DFMA] movie.)

Any item sitting on the drawbridge has a 1/4 chance of being flung. They can be flung anywhere from zero to 11 Z levels upward and up to 11 units in any other direction.

== Retracting bridges ==

A retracting bridge can be connected to a [[lever]] or [[pressure plate]]. When the lever is pulled, after a delay of 100 steps the bridge will retract.

Any creature standing on a retracting bridge when it retracts or extends will be flung . This applies to all units{{verify}}, including flying [[creature]]s who happen to be on the same tile as part of the bridge at the time. The creatures will usually come out from the fling stunned but otherwise uninjured, and flying creatures may drop out of the sky.{{verify}} If a creature with a [SIZE] greater than 10 ( [[megabeast]]s, [[demon]]s, and the [[caravan|wagon]] ) - is standing on the bridge when you attempt to retract it, it will simply fail to operate.

Any item sitting on the retracting bridge has a 1/4 chance of being flung. They can be flung anywhere from zero to 3 Z levels upward and up to 3 units in to the sides.

[[Category:Constructions]]
[[Category:Buildings]]