unanswered 9:11 questions, page-148

Yes it is very simple Grahod

Maybe that is the problem LOL

There is a massive difference between how strong a table would need to be to be able to have a 100Kg placed on it

to how strong the table would need to be if the 100kg was dropped on to it.

Buildings are designed to support the wieght of the structure above any given point

they are not designed to support the wieght from a higher section being DROPPED or COLLAPSING onto a lower section