For one... any columns they supported would lose support if the transfers "failed"
2 - the transfers were laterals structures - not unlike a beam of girder and their failure or displacement would "impact" on structures they were framed into.... girders and beams
3. FFA resulted when the structure supported to moment frame below floor 8 collapse/buckled failed
this included a "belt truss" at floors 5-7 which is a transfer structure in itself
4. I suggest that the mass of 47 floors collapsing inside the cage of the perimeter undermined the axial structures at the base of the tower... to a height of as much as 5-8 stories
5. "Columns" were 2 - 3 story elements with the belt truss being 3 stories

Green, blue and magenta elements were transfer structures
