New York and Countries of the World

 I am doing research as to why did those Twin Towers, The World Trade Center collapsed, as we all have been questioning during these two years. AUG 17, 2021 9/11: Why Natural Collapse Was Mathematically Impossible BUILDREPS Mario Buildreps is a graduate engineer. Become aware of topics in a way you have never heard before. ================ Feature: Special Report Why Did the World Trade Center Collapse? Science, Engineering, and Speculation Thomas W. Eagar and Christopher Musso INTRODUCTION The collapse of the World Trade Center (WTC) towers on September 11, 2001, was as sudden as it was dramatic; the complete destruction of such massive buildings shocked nearly everyone. Immediately afterward and even today, there is widespread speculation that the buildings were structurally deficient, that the steel columns melted, or that the fire suppression equipment failed to operate. In order to separate the fact from the fiction, we have attempted to quantify various details of the collaps...