The Madrid Windsor fire is sometimes cited as being relevant to the WTC collapse, but in reality there are major differences between the two situations.
No plane flew into the Madrid Windsor Tower, for instance. It didn't sustain any structural damage prior to the fire beginning. (And for those who keep emailing us to say that neither did WTC7, reports of the damage there are covered here.)
The Madrid Windsor Tower was much smaller than the WTC, too, at 32 storeys.
More significantly, the design of the Madrid Windsor Tower was entirely different to that of the WTC.
ok, troofer?
http://www.911myths.com/html/madrid_windsor_tower.html