 highrise in beijing engulfed in flames |
| highrise in beijing engulfed in flames |
 Feb 9 2009, 11:40 AM
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#1
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Feb 9 2009, 02:32 PM
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#2
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 Group: Members Posts: 2,329 Joined: 20-June 07 Member No.: 1,243 |
Maybe if a Boeing 747 crashed in to it it would have crumbled
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Feb 9 2009, 03:21 PM
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#3
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 Group: Members Posts: 419 Joined: 23-February 06 Member No.: 64 |
I thought it was because that the fuel from the planes cause it to burn at a higher temperature, which changed the phase/structure of the steel of the building, that's what cause the most damage.
-------------------- I go to the maize and blue
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Feb 9 2009, 05:58 PM
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#4
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 N 0 t h i n g Group: Members Posts: 1,449 Joined: 23-February 06 Member No.: 54 |
QUOTE (Watchman @ Feb 9 2009, 03:53 PM)  Jet fuel burns at 800° to 1500°F, not hot enough to melt steel at 2750°F yet molten steel and melted steel girders were found at Ground Zero. How did the "terrorists" defy physics? They didn't defy physics. The structural strength of steel is derated at high temperatures (this means, at high temperatures, steel will fail at lower stresses). So if you have steel that is suddenly the strength of wood + the weight of the building and forces of wind, you have one doomed building. --------------------  QUOTE (jonathan83 @ Nov 16 2007, 09:22 PM) |
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Feb 9 2009, 06:06 PM
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#5
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 GORILLA FLUFFER  Group: Agents Posts: 7,711 Joined: 23-February 06 From: lubbock Member No.: 50 |
QUOTE (Watchman @ Feb 9 2009, 11:40 AM) yet it didn't collapse we need to get those chinese architectural engineers over here stat since apparently they can build a more robust building than us http://www.reuters.com/article/newsOne/idUSPEK19411020090209 ::FACEPALM:: you didn't even read the article, did you? it specifically says DUTCH architect.... --------------------  QUOTE (Jessica @ May 7 2007, 01:15 PM) but yeehaw dammit. YEEHAW QUOTE (Dogmeat @ Jun 26 2008, 07:51 PM) ok once upon a time I jacked myself off retarded. Licking anuses, one kindergarten class at a time!! |
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Feb 9 2009, 06:45 PM
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#6
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 Group: Members Posts: 10,620 Joined: 23-February 06 From: Houston, TX Member No.: 48 |
QUOTE (Watchman @ Feb 9 2009, 04:53 PM) Jet fuel burns at 800° to 1500°F, not hot enough to melt steel at 2750°F yet molten steel and melted steel girders were found at Ground Zero. How did the "terrorists" defy physics? Look up the word "pressure" |
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Feb 9 2009, 07:13 PM
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#7
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 Group: Moderators Posts: 2,499 Joined: 23-February 06 From: El Paso Texas Member No.: 32 |
didn't the the planes knock off the flame retards where it impacted?
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Feb 10 2009, 09:00 AM
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#8
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Group: Members Posts: 419 Joined: 23-February 06 Member No.: 64 |
QUOTE (Watchman @ Feb 9 2009, 04:53 PM) Jet fuel burns at 800° to 1500°F, not hot enough to melt steel at 2750°F yet molten steel and melted steel girders were found at Ground Zero. How did the "terrorists" defy physics?  This is an iron-carbon (basically steel) phase diagram. For temperatures lower than 727 C (or 1340 F) it is in an alpha-Fe3C phase (a stable BCC crystal structure), above that it transforms into austenitic FCC form which has a much weaker structure than it's alpha-Fe3C phase. This is materials science at it's very basics. -------------------- I go to the maize and blue
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Feb 10 2009, 09:22 PM
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#9
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 Oh baby bring me down Group: Agents Posts: 4,115 Joined: 23-February 06 From: Way out yonder Member No.: 68 |
QUOTE (Inferia @ Feb 10 2009, 10:00 AM) This is an iron-carbon (basically steel) phase diagram. For temperatures lower than 727 C (or 1340 F) it is in an alpha-Fe3C phase (a stable BCC crystal structure), above that it transforms into austenitic FCC form which has a much weaker structure than it's alpha-Fe3C phase. This is materials science at it's very basics. You got a MS in it right? -------------------- Southern Rock, beer and bears!
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Feb 11 2009, 10:09 AM
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#10
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Group: Members Posts: 419 Joined: 23-February 06 Member No.: 64 |
I'm doing a ph D in it, but not in metal-related stuff though.
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