Reply #40: I am not a materials engineer but I do know that they have...

[mikelewis]

load bearing equations for floors, thus max ocupancy rates and the like. From this they can determine resistance. I'm sure the NIST has this information and this could easily be figured out. I don't have the variables, they do. They have the time, the mass, the speed and the resistance. If the equation doesn't balance out, there must be another factor that moved that building at that speed. I believe was is an honest question and doesn't deserve a smarmy reply. Why is it so wrong to ask a question about something that appears so odd? Why aren't you writing smarmy replies to the NIST, they're wasting taxpayers dollars on a question that is so obvious to you that you feel the need to waste your sarcasm on me?