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Originally posted by yourmaker
what if it was going 700mph???
100+ than what the technicians concluded would withstand a direct hit jeopardizing the integrity of the structure entirely
Originally posted by arbiture
reply to post by Yankee451
Guess what genius, I looked at what I heard, saw on TV, and was told from many sources and after a moment of deep shock, assumed it was all a lie. So I did my own calculations, go to the library, do the calculations yourself thats if you know what a "book" is and no it does not have keyboard attached to it . To get something printed not to long ago required a publisher to take a BIG CHANCE; hock his balls, his dog, his children not to mention his reputation. Unlike the internet they had better be right, or they end up doing something else like driving a cab, because THEY DID NOT CHECK IT OUT. Have a nice, well now its morning. God I hope this this not a waste of time.
Originally posted by thedman
reply to post by _BoneZ_
Can debate from now to end of time if FDNY could control the fires what would have been outcome...[/quote
The first tower collapsed after less than one hour of fire. This is simply not long enough to cause steel to fail.
[quoteProblem was given the flimsy state of construction - using sheetrock to line stairs/elevator shafts, thin guage web truss to supposrt floors vs solid I beams, inadequate fire proofing (which easily flaked or was knocked off steelwork) the FDNY never had a chance
Without elevators to upper floors meant LONG SLOW EXHAUSTING slog up crowded stairs
Thin web trusses lacked mass and quickly heated up and began to sag
Inadequate fire proofing meant the steel work would heat up
Only one crew got anywhere impact area and fires - only to run out of time
It was lack off time caused by poor design and construction methods which doomed the buildings
The first building to apply the tube-frame construction was the DeWitt-Chestnut apartment building which Khan designed and was completed in Chicago by 1963.[2] This laid the foundations for the tube structures of many other later skyscrapers, including his own John Hancock Center and Willis Tower, and can been seen in the construction of the World Trade Center, Petronas Towers, Jin Mao Building, and most other supertall skyscrapers since the 1960s.[3] The strong influence of tube structure design is also evident in the construction of the current tallest skyscraper, the Burj Khalifa.[4]
Again irrelevant, as the fire did not burn long enough to cause complete failure of major steel components resulting in a complete collapse
with no mass left in its footprint, as would be required for the what you claim to be true (Not even the OS because they didn't explain the collapses).
This is nothing but speculation and assumptions. Using Sheetrock is not flimsy construction. Fire proofing also does not come into play with a fire lasting less than an hour.
The building is being promoted as the safest skyscraper in the U.S. According to Silverstein Properties, the owner of the building, it "will incorporate a host of life-safety enhancements that will become the prototype for new high-rise construction". The building has 2 ft (60 cm) thick reinforced-concrete and fireproofed elevator and stairway access shafts. The original building used only drywall to line these shafts. The stairways are wider than in the original building to permit faster egress.
Concrete: The recent announcement by Ground Zero Developer Larry Silverstein regarding safety measures at the new 7 World Trade Center (WTC) building echoes what the concrete industry has been saying for years: Concrete is safer. The building’s core (where elevators, stairs, and power systems are located) will be encased in 2-foot-thick concrete for protection in the event of a fire or terrorist attack. “Cast-in-place reinforced concrete offers outstanding resistance to explosion and/or impact. Moreover, it can endure very high temperatures from fire for a long time without loss of structural integrity,” says Alfred G. Gerosa, president, Concrete Alliance Inc., New York City.
Concrete requires no additional fireproofing treatments to meet stringent fire codes, and performs well during both natural and manmade disasters. Because of concrete’s inherent heaviness, mass, and strength, buildings constructed with cast-in-place reinforced concrete can resist winds of more than 200 miles per hour and perform well even under the impact of flying debris.
With proper design, engineering, and construction, the seemingly rigid structures built with concrete can exhibit increased ductility - a must in areas prone to seismic activity. However, according to the Skokie, IL-based Portland Cement Association (PCA), the performance of any building during an earthquake is largely a function of design rather than the material used in construction
Originally posted by hooper
And yet thats exactly what happened. So either:
1. There was a massive complex conspircay involving the placement and detonation of a significant amount of explosives in the builidng so perfectly concealed that they avoided detection for weeks, months or years and so perfectly placed that crashing a huge commercial aircraft into the building did not interfer in the least with their integrity or -
2. You are wrong about your how much the fire affected the steel.
I am going with 2.
Wow. First its everything was in the footprint, now its nothing left in the footprint.
Well I'd have go with 1., but excluding all your opinionated drivel you feel the need to add.
No matter how crazy it sounds, buildings defying known physics is far more crazy my friend.
This is because you are confused. Let me explain for you, please read slowly, and absorb and think.
WTC 7, landed mostly in its own footprint...
WTC 1 and 2, did not land in their footprints, debris was ejected in a symmetrical 360d arc around the towers.
After all this time you still can not get the argument straight?
Next time remember this and you'll sound more like you know at least something about the arguments we put forward.
I mean how can you claim we're wrong when you can't even get it right?
It's obvious you don't care, and keeping people from questioning the OS is your motivation.
Originally posted by _BoneZ_
The 707 may be slightly smaller and lighter than a 767, but it's faster speed increases the impact energy exponentially.
[atsimg]http://files.abovetopsecret.com/images/member/af0ce5ab65dd.gif[/atsimg]
Originally posted by defcon5
Everything else being equal, The larger caliber is always going to do much more damage then the smaller caliber.edit on 4/4/2011 by defcon5 because: (no reason given)
Changes included the widening of exit stairways and the hardening of stairwells and elevator hoistways, improved fireproofing and sprinklers, and the establishment of emergency elevators for evacuation and firefighter access