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Difference between revisions of "v0.31:Fire-safe"

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{{quality|Fine|18:03, 28 April 2011 (UTC)}}{{av}}
 
{{quality|Fine|18:03, 28 April 2011 (UTC)}}{{av}}
  
Fire-safe materials are those that are not damaged by fire. These materials include glass, metal, and most stone. No types of wood are fire-safe, and neither are [[charcoal]] or [[coke]]. [[Bituminous coal]] and [[lignite]] are flammable stone, and therefore not fire-safe. Fire-safe materials are only required when the object is going to come into contact with extreme heat, such as a [[wood furnace]], [[smelter]], [[forge]], [[kiln]] or [[glass furnace]], or for the magma-powered versions of these facilities.
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'''Fire-safe materials''' are those that are not damaged by [[fire]]. These materials include [[glass]], most [[metal]] (everything ''but'' [[bismuth]], [[lead]], [[tin]], [[zinc]], and all three pewters) and most [[stone]]. [[Nether-cap]] is the only [[wood]] that can withstand fire (and even [[magma]]) thanks to its fixed temperature, but the game does not recognize it as a fire-safe building material. More esoteric fire-safe materials include [[ash]], [[potash]], [[pearlash]], and [[dragon]] tallow [[soap]] "bars". Counterintuitively, [[Bituminous coal]], [[lignite]], [[charcoal]], and [[coke]] '''are''' considered fire-safe, since they only catch fire when they're hot enough (see below).
  
Flux materials, such as [[limestone]], which are consumed in the purification of [[pig iron]] to produce [[steel]], are considered fire-safe. It is perfectly fine to use limestone as a flux material to make steel in a limestone smelter.
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For the purpose of job item requirements (e.g. in custom [[reaction]]s or when constructing certain buildings), only [[bar]]s, [[block]]s, [[stone]], [[log]]s, and [[anvil]]s can be classified as "fire-safe materials" - all other item types are rejected outright. Fire-safe materials are only required when the object is going to come into contact with extreme heat, such as all conventional [[furnace]]s and the [[metalsmith's forge|forge]]. For the magma-powered versions of these buildings, as well as anything that will be in direct contact with magma (such as [[floodgate]]s), fire-safe is not enough: it has to be [[magma-safe]].
  
As far as the game is concerned, any material which is stable at the temperature {{ct|11000}} (i.e. MELTING_POINT/BOILING_POINT/IGNITE_POINT/HEATDAM_POINT greater than 11000 and COLDDAM_POINT less than 11000) is supposed to be considered fire-safe; due to a bug, however, the game only checks that the material has no ignition point, resulting in such oddities as [[ice]] being considered fire-safe. Furthermore, the game only considers [[bar]]s, [[block]]s, [[stone]], [[log]]s, and [[anvil]]s to be ''capable'' of being fire-safe in custom [[reaction]]s and workshops - all other item types are rejected outright. Despite this temperature being considered fire-safe, actual [[fire]] can generate temperatures significantly higher (in particular, any burning item will heat up to 200 degrees above its material's ignite point).
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As far as the game is concerned, only materials which are stable at the [[temperature]] {{ct|11000}} (i.e. MELTING_POINT/BOILING_POINT/IGNITE_POINT/HEATDAM_POINT greater than 11000 and COLDDAM_POINT less than 11000) are supposed to be considered fire-safe. Despite this temperature being considered fire-safe, actual [[fire]] can generate temperatures significantly higher - in particular, all burning items generate temperatures up to 200 degrees ''above'' their material's ignite point, so once a "fire-safe" item manages to get ignited (e.g. by exposure to [[magma]]), it can easily spread further. For practical purposes, anything which has an IGNITE_POINT should be treated as not fire-safe.
  
[[magma-safe|Magma-safe materials]] are a different thing entirely; while many fire-safe materials will still melt when submerged in [[magma]], that is not an issue for buildings that are merely powered by the magma.
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==Bugs==
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All fire-safety checks are broken in this version, repeatedly checking the IGNITE_POINT 5 times instead of checking each individual temperature ({{bug|4573}}).
  
 
{{Category|Materials}}
 
{{Category|Materials}}
 
{{Category|Physics}}
 
{{Category|Physics}}

Latest revision as of 11:52, 22 June 2024

This article is about an older version of DF.

Fire-safe materials are those that are not damaged by fire. These materials include glass, most metal (everything but bismuth, lead, tin, zinc, and all three pewters) and most stone. Nether-cap is the only wood that can withstand fire (and even magma) thanks to its fixed temperature, but the game does not recognize it as a fire-safe building material. More esoteric fire-safe materials include ash, potash, pearlash, and dragon tallow soap "bars". Counterintuitively, Bituminous coal, lignite, charcoal, and coke are considered fire-safe, since they only catch fire when they're hot enough (see below).

For the purpose of job item requirements (e.g. in custom reactions or when constructing certain buildings), only bars, blocks, stone, logs, and anvils can be classified as "fire-safe materials" - all other item types are rejected outright. Fire-safe materials are only required when the object is going to come into contact with extreme heat, such as all conventional furnaces and the forge. For the magma-powered versions of these buildings, as well as anything that will be in direct contact with magma (such as floodgates), fire-safe is not enough: it has to be magma-safe.

As far as the game is concerned, only materials which are stable at the temperature 11000 °U (i.e. MELTING_POINT/BOILING_POINT/IGNITE_POINT/HEATDAM_POINT greater than 11000 and COLDDAM_POINT less than 11000) are supposed to be considered fire-safe. Despite this temperature being considered fire-safe, actual fire can generate temperatures significantly higher - in particular, all burning items generate temperatures up to 200 degrees above their material's ignite point, so once a "fire-safe" item manages to get ignited (e.g. by exposure to magma), it can easily spread further. For practical purposes, anything which has an IGNITE_POINT should be treated as not fire-safe.

Bugs[edit]

All fire-safety checks are broken in this version, repeatedly checking the IGNITE_POINT 5 times instead of checking each individual temperature (Bug:4573).