http://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse
http://www.youtube.com/watch?v=tR_N6lyTxj0
Unfortunately, it happens. Errors and omissions can lead to horrible disasters. KCE's report, that Montgomery County commissioned, and has been available on Montgomery County's website for more than a year, attributes the SSTC's total lack of expansion joints, its widespread cracking, slabs thinner than they're supposed to be, exposed reinforcement, missing reinforcement, underdesigned beams, understrength and overstressed concrete, etc. to errors and omissions by the SSTC's contractor/builder, engineer/designer and concrete inspector/tester and special quality inspector.
Do you trust the opinions of only those who have been involved in the project, who have a lot to lose if the SSTC is deemed unsafe, and who are paid for by Montgomery County? I don't. I want the opinions of independent experts who haven't been involved in the project to date, who aren't paid for by Montgomery County, who don't have ties to this region (including its politics), and who don't have anything to lose (e.g., current or future business) by being totally objective, and finding that the SSTC is unsafe, if that's the case.
Finally, who's been controlling information that's been made public for the SSTC for the past year? ... primarily, politicians and the news media. Needless to say, neither politicians nor the news media are independent construction and/or engineering experts.
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