On 24/09/18 00:13, juan wrote:
especially dedicated to agent fairbrother, 'expert' on metals
One ought to learn to sort out the obviously bullshit. Begins: "Never before or after 9/11 have steel framed buildings collapsed due to fire". Unfortunately that is simply not true; nor relevant to what purports to be a comparison between WTC and Windsor Tower, as Windsor Tower was not steel-framed (nor incomplete as later stated). I didn't bother watching much more. Windsor Tower was a composite building with a large occupied reinforced concrete core. The outer parts were steel-framed. There was a separate reinforced concrete service tower. The reinforced concrete core and service tower survived the extensive and prolonged fire. The lower steel-framed outer parts, which had not been exposed to such prolonged fire, which were still supported by the reinforced concrete core, and which were protected from falling debris and progressive collapse from above by the reinforced mechanical floor [1], survived. About a tenth of the steel-framed part of the top 11 floors which was protected and supported between the reinforced concrete service tower and the core also survived. The rest of the upper 11 stories of the steel-framed part of the building collapsed. Ooops. http://www.elmundo.es/documentos/2005/02/windsor/album2/05.html shows the surviving concrete core. http://www.elmundo.es/documentos/2005/02/windsor/album2/10.html http://www.elmundo.es/documentos/2005/02/windsor/album5/08.html and http://www.elmundo.es/documentos/2005/02/windsor/album3/05.html show where the outer parts have collapsed and some of the debris. The building was originally rectangular - the outsides of the top have fallen off leaving the core sticking up. [1] The reinforced mechanical floor can be seen in http://www.elmundo.es/documentos/2005/02/windsor/album5/09.html - it was about the 19th floor, at the bottom of the collapse, with no windows. -- Peter Fairbrother