One of the prime fundamental requirements of building design is H&S and in that the building will remain standing after it has been bombed, planed, earth quaked, fired and baked.
That's why they never collapse until they've first been prepared for demolition. Flame 'em white hot till they're burnt black and they're all still standing completely rigid without any collapse - Until the Thermate is "Pulled"
from a architects viewpoint it math and physics not style will allow the building to function and to stand for 50 or more years without any drama . when you are told you are going to build 2 of the greatest towers in the greatest city with the most expensive real estate and these buildings will be iconic and the rents are tax deductible and companies will queue to have as their address WTC then the cost is almost irrelevant .
therefore the design specified that the building would have for its spine 50 huge steel core columns surrounding the elevator shafts which themselves were also stress columns adding to the strength of the building , further the outer skin was composed of STEEL panels inches thick and each floor was pinned and attached to these steel skin s making the entire building bullet proof and the crucial expression is REDUNDANCY it was way way more powerful than required and the excess strength was "redundant" strength built in to be sure to be sure to be sure it would never have a structural defect and would remain standing when all others fell even if struck by MULTIPLE AIRCRAFT .
this was visible when the planes struck and the windows above and below were unbroken as the building had not suffered enough stress to break them and staff were told to return to their desks and continue their work until told otherwise .
the buildings remained standing without glass breaking on the surface for a long time after the incident however many people jumped to their death after hanging outside the windows in the cool air but no smoke came out the windows they jumped from -- this anomaly has never been addressed however the steel the building was composed continued to burn underwater for 5 months after the collapse and the 2000 degree heat measured from the orbiting space station has never been explained .
this building became the worlds longest burning fire a fire brigade tried to extinguish in history while burning underwater .
the math you must rembember in all of this is the calculation that a good gust of wind was in pounds per square inch many times more in real terms that the impact of an aircraft .
the building was built to survive hurricanes for the next 50 years or more and the impact of 10 airliners would be less than a hurricane on a 110 story building the size of 110 Croke parks .
the truth is that they claim WTC7 which was not hit by any plane collapsed because of an office fire -- this development would have changed all the building codes of every skyscraper worldwide as it could now fall due to an office fire .
no codes were changed as this is total bullshit and MOST IMPORTANT the new tower was built exactly like the one which fell - exactly .
911crashtest.org
