Author: admin

Abstract: One of the greatest mysteries of September 11, 2001 is the collapse of the Twin Towers. Claims that explosions contributed to the collapses were made on 9/11 and have persisted, but studies supportive of the U.S. government’s account of events have ignored or denied…

Abstract: This paper examines the elastic loading and plastic shortening phases of the columns of WTC 1 after impact of the upper 16 storeys of the building upon the lower storeys and its effect on the momentum transfer after the collision. An energy balance is…