Sounds like you didn't read the Official Report©. Did you?
The heat from the uncontrolled fires caused steel floor beams and girders to
thermally expand, leading to a chain of events that caused a key structural column to fail. The failure of this structural column then initiated a fire-induced progressive collapse of the entire building.
According to the report's probable collapse sequence, heat from the uncontrolled fires caused
thermal expansion of the steel beams on the lower floors of the east side of WTC 7, damaging the floor framing on multiple floors
http://www.nist.gov/el/disasterstudies/wtc/faqs_wtc7.cfm
Why didn't fire "destroy" this steel?

Around midnight, on Saturday, February 12, 2005, a fire was detected on the 21st floor. The fire spread quickly throughout the entire building, leading to the collapse of the outermost, steel parts of the upper floors; firefighters
needed almost 24 hours to extinguish it. While seven firefighters were injured, nobody was killed in the fire, which was arguably the worst in Madrid's history.
http://en.wikipedia.org/wiki/Torre_Windsor
Or this steel?
The Beijing Television Cultural Center after the fire-that didn't "destroy steel" (rofl)

If "Fire destroys steel" then surely you can find another example of a steel framed building that has been "destroyed" by fire-and you'd be famous! TIA
911 truth with lies and dumbed down claims fails to take action with zero evidence - that makes sense. 911 truth, a NAZI like name for a movement of lies based on ignorance and fantasy. They would not have the date right if it was not for their name.
So Truth is now a derogatory word. Orwell loves you! You sound like an angry bloke. You do realise that rantings like that only further motivate those that seek the truth, don't you? Calm down. Take a big breath. You and your kind will never stop anyone from doing anything.