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Question about structural beams, and columns ;)

forester
post Nov 2 2006, 11:48 AM
Post #1


parky76sock


Group: Troll
Posts: 152
Joined: 27-October 06
Member No.: 173



the structural beams of the wtc and all buildings are designed to be able to hold up the weight of all the beams above them.

at the wtc towers, after the planes hit, many of the beams were severed. this puts a lot more of the weight of the building on the undamaged beams.

question 1: how many beams MUST stay intact for the buildings to stay up?

question 2: if the section of the towers above the impact does collapse due to the beams in the damaged section nolonger being able to carry the above weight, can the beams below the damaged section literally catch the fall of the collapsing section and keep the building up? i took physics many years ago but im sure their is an equation to figure out the weight or kinetic energy of a mass after it falls several feet.

if the section above the plane damage did indeed collapse, the undamaged section below it would have had to be able to hold up all the weight above it multiplied by its velocity...i assume. considering this, is it logical to expect the undamaged floors to be able to hold this weight? is there any precident for this?
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Posts in this topic
- forester   Question about structural beams   Nov 2 2006, 11:48 AM
- - NJcpaTOM   QUOTE (forester @ Nov 2 2006, 03:48 PM)the st...   Nov 4 2006, 04:27 AM
- - waterdancer   These are questions NIST should have answered alre...   Nov 4 2006, 04:50 AM
|- - dMole   QUOTE (waterdancer @ Nov 4 2006, 02:50 AM...   May 23 2008, 04:09 AM
- - dMole   Related info can be found at: http://pilotsfor911...   Apr 29 2008, 08:01 PM
- - Roark   There were only structural beams in the core area....   May 22 2008, 06:54 AM
|- - dMole   QUOTE (Roark @ May 22 2008, 04:54 AM) The...   May 22 2008, 07:59 AM
|- - dMole   QUOTE (Roark @ May 22 2008, 04:54 AM) The...   May 22 2008, 09:16 AM
|- - Roark   QUOTE (dMole @ May 22 2008, 08:16 AM) Umm...   May 22 2008, 07:58 PM
|- - dMole   QUOTE (Roark @ May 22 2008, 05:58 PM) Wel...   May 23 2008, 01:51 AM
|- - dMole   QUOTE (Roark @ May 22 2008, 05:58 PM) (an...   May 23 2008, 02:26 AM
|- - dMole   QUOTE (Roark @ May 22 2008, 05:58 PM) No,...   May 23 2008, 08:05 AM
- - Roark   Are you the local grammar Nazi? Who’s debating? ...   May 22 2008, 08:40 AM
|- - dMole   QUOTE (Roark @ May 22 2008, 06:40 AM) Are...   May 22 2008, 09:06 AM
- - albertchampion   let me just say this about "melting" ste...   May 22 2008, 08:25 PM
- - Roark   So how did the steel melt without loosing all its ...   May 22 2008, 10:10 PM
|- - Sanders   QUOTE (Roark @ May 26 2008, 08:10 PM) So ...   May 23 2008, 01:11 PM
|- - Leslie Landry   QUOTE (Sanders @ May 23 2008, 01:11 PM) I...   May 23 2008, 01:50 PM
|- - Leslie Landry   QUOTE (Leslie Landry @ May 23 2008, 01:50...   May 27 2008, 10:30 PM
|- - Sanders   QUOTE (Leslie Landry @ May 31 2008, 09:30...   Jun 2 2008, 06:50 PM
|- - Leslie Landry   QUOTE (Sanders @ Jun 2 2008, 06:50 PM) So...   Oct 1 2008, 04:17 PM
- - albertchampion   YOU ARE A SILLY TWIT. wtc1,2,6,7 were blown up.   May 22 2008, 10:42 PM
- - Sanders   QUOTE Columns are vertical, beams are horizontal. ...   May 23 2008, 01:15 PM
- - dMole   I wonder what Roark would call this thing? http...   May 23 2008, 01:36 PM
- - Leslie Landry   well it seems to me that i didnt really miss too m...   May 23 2008, 02:04 PM
- - dMole   Yes Leslie, Except one side of the debate is: ...   May 23 2008, 05:39 PM
|- - Leslie Landry   QUOTE (dMole @ May 23 2008, 04:39 PM) Yes...   May 27 2008, 11:17 AM
|- - dMole   QUOTE (Leslie Landry @ May 27 2008, 09:17...   May 27 2008, 10:49 PM
|- - Leslie Landry   QUOTE (dMole @ May 27 2008, 09:49 PM) Hi ...   May 30 2008, 11:33 PM
- - dMole   This is already listed (as the 3rd of my "rel...   May 25 2008, 01:05 PM
- - dMole   Hunt the Buckling: http://www.orbitfiles.com/dow...   May 25 2008, 07:21 PM
- - Anduril   According to NIST, the maximum observable temperat...   May 26 2008, 09:32 AM
|- - dMole   QUOTE (Anduril @ May 26 2008, 07:32 AM) A...   Jul 12 2008, 03:32 PM
- - dMole   Hi Tony, You might want to look at the FEA video ...   May 26 2008, 04:29 PM
|- - Anduril   QUOTE (dMole @ May 26 2008, 08:29 PM) Hi ...   Jun 2 2008, 05:21 PM
- - dMole   Re: "steel loses half its strengh" claim...   May 28 2008, 11:49 AM
- - dMole   Hello Tony, Perhaps I should clarify- I merely po...   Jun 2 2008, 06:09 PM
- - dMole   There is a lot of sourced information at jakeogh...   Jul 17 2008, 05:01 PM
- - dMole   WTC steel is covered in: http://wtc.nist.gov/NIST...   Jul 18 2008, 12:37 AM
- - dMole   I found something interesting in the spreadsheet d...   Jul 26 2008, 11:17 PM
- - dMole   A few steel links: http://www.victorysteelsupply....   Aug 23 2008, 07:06 PM
- - dMole   Some links on WTC1 & 2 Perimeter Columns: FEM...   Aug 23 2008, 08:00 PM
- - dMole   Given the above information about Perimeter Flange...   Aug 23 2008, 10:27 PM
- - dMole   Have you got the 40% [perimeter only IIRC] severed...   Oct 3 2008, 12:44 PM
- - believeyourowneyes.com   QUOTE (forester @ Oct 31 2006, 02:48 PM) ...   Apr 23 2009, 05:26 PM
- - icarus88   According to the Architects of the TwinTowers the ...   Aug 11 2011, 04:20 PM
|- - rob balsamo   QUOTE (icarus88 @ Aug 11 2011, 04:20 PM) ...   Aug 12 2011, 07:56 AM
- - SanderO   The towers were not stiff enough.... able to act l...   Aug 13 2011, 11:18 AM
- - amazed!   Yada, yada, yada.....   Aug 13 2011, 10:18 PM


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