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Originally posted by wmd_2008
Well here is a floor truss angle cleat care to explain how thats over engineered
edit on 25-7-2012 by wmd_2008 because: (no reason given)
Originally posted by wmd_2008
reply to post by SimontheMagus
Here look at this link I have posted before.
hyperphysics.phy-astr.gsu.edu...
Now since YOU guys avoid this or are not able to use it lets look at an example.
WTC floor height 3.66 mtrs mass 10 kg yes a simple 10kg mass could be a bowling ball you know the one Gage mentions in every interview.
Now the problem is we cant put in a distance the mass was stopped as that didn't happen so lets use 2 examples to give an indication of what the dynamic loads could be like.
So lets put the figs in the calculator above for disatnce stopped use angle cleat thickness about 1" or 25.4 mm or 0.0254 mtrs then use the bolt thickness 16mm or 0.016mtrs.
So a 10kg mass dropped 3.66 mtrs will reach 8.46 mtrs per second and have 358.6 j of KE
If stopped in 0.0254 mtrs average impact force would be 14121 n divide by 9.81 for kg and your answer is
1439 kg or 1.439 TONS for a 10 kg mass the concrete for 1 floorslab was 600,000kg work that one out
North Tower 15 floors, South Towers 31 floors and YOU think they could stand up
Answer for 600,000kg is 847275590 n or 86368561 kg if stopped over 1" or 86,368.561 TONS
NOW as NOTHING was stopped what were the actual loads.
Originally posted by plube
reply to post by wmd_2008
So you come in and show this photo and you are what?...
you showed a building...are you trying to pass that photo off as this building design....
Also why would I try to compare it to WTC 1 or 2 it is a forty story building....completely engulfed in fire...which would be compared to building 7....Why be so deceitful....yes it has a concrete core...if we must say...REINFORCED...there shouted it out for your benefit....the frame was steel....did it even suffer a partial collapse...NO....so why show pics of a building which is not the one being discussed.
also before you use some egotistical smiley to try and build an over inflated ego...I know building 7 DOES NOT HAVE A REINFORCED CONCRETE CORE....is that clear enough for you.
edit on 013131p://f02Wednesday by plube because: (no reason given)
Originally posted by exponent
Here is my suggested list of topics of discussion. Please only post your thoughts on the list of topics, rather than any debate over a specific topic. I really don't want this thread to become bickering as well
Yet one of the buildings collapsed near the top not 17 floors below. So now comes in the play of near free fall speeds vs drag and friction as it hits the next floor. The speed didn't pick up and didn't slow down. the dragging of hitting the next floor down would have helped I believe? like a (edited)stun*T* man landing on cardboard boxes. just 3 layers. He jumps from say 8 floors onto 3 or 4 stacks of x cubical size boxes piled together. The air in the box helps cushion his fall. This thing fell from a 12 feet while a person many times the mass and density of cardboard boxes jumps 100 times it's height. something sounds wrong with this. there is drag. the air pockets in the building being pushed out (which is what they're saying the squibs were) would have acted like an elevator hydraulic breaking system. it would have slowed down some expert say. kinetic energy is in the start not all the way down (as some liked to pass off). then there is building 7. It pancaked in reverse??
Originally posted by GenRadek
reply to post by SimontheMagus
The truss seats were unable to take on the DYNAMIC vertical load. THAT is what you are failing to understand. The truss seats were supporting the single floor only. They were responsible for just holding up ONE floor. When 15+ floors crashed down on it, that was more than enough to sever the connections. The truss seats had no other responsibility other than hold up the truss holding up the one floor. It also connected the truss to the exterior and interior columns on each end. It..
Originally posted by stew4media
How else do they melt steel in a steel factory if they don't use fire. Why does everyone bring up silly catchphrases created by knee jerk comments by television personalities? I think most of this is shillry to spin crap off it's axis of it point of logic.
No drag no air brake effect editednot actually stop.. but have a drag between the air being pushed out and the friction cause by impacting each floor) end of edit: in a tubular type construction. the building would most likely fall left and right and everywhere in between.
and to the smirk face intimidation driving past .. enjoy your extra corrupted moonlighting. I love your angle on changing things.