One more about the 4" steel. FEMA had no explanation for why the steel was so thin at the ends of some columns, but they said further investigation was necessary. And then NIST never bothered addressing it once they got the steel if I remember correctly. Come to think of it, there were quite a few things that FEMA thought needed further investigation...and NIST never bothered following up. That's one of my little mini projects that I'm working on, but it's way back on the list of things for me to do.