In the mainstream news it was cited that this building had been burning shortly after the planes hit the Twin Towers. As such, the collapse is attributed to the structural damage from the collapsing towers coupled with the prolonged fire which affected the fuel stores for emergency generators (Glanz).
In addition, the United States government published a report that aims to clarify the issue pertaining to the collapse of Building 7 despite the fact that it was not hit by hijacked airliners unlike the two ill-fated towers. According to the published report, there were no known casualties due to the collapse. Furthermore, it concurs with the mainstream news that the collapse is primarily due to the fire rather than any impact damage from the collapsing towers. However, the report admits that prior to the 9/11 tragedy, there is minimal record of fire-induced collapse of large fire-protected steel buildings. Apart from this, the report also mentions that the study conducted regarding the structural design and construction features of Building 7 needs to be confirmed by further studies and analysis (Gilsanz, DePaola, Marion & Nelson).
Due to some disconcerting observations with regard to the collapse of Building 7, some have formulated