Could a de-icing chemical play part of bridge collapse?
According to an article at NewsInferno.com, the NTSB indicated that investigators are researching a de-icing chemical used on the I35W bridge. Since sever icing has been common on the bridge, an automated de-icing system was installed to spray the chemical on the bridge to reduce the icing affects.
This, however, is just one of many questions raised by the NTSB during it’s investigation and may not have anything to do with the collapse. The chemical, called “C7″ is known to react with Zinc and galvanized steel, and in 2005 the manufacturer, Cryotech, issued a warning about the Zinc reaction.
There are other suggestions as to the collapse as well. One includes the pigeon waste that accumulates on the bridge. It will be interesting to find out the cause(s) for the collapse. Yes, I personally believe it will be a combination of many things that ended up causing the collapse. Whether it was preventable or not will be indicated by the final NTSB report when it comes out.
Photo credit: Ilumenari
Via: NewsInferno.com - Minneapolis Bridge Collapse Investigators Eye De-Icing Chemical
I35W Bridge Collapse, Minneapolis Bridge Collapse, NTSB, Bridge Investigation
November 11th, 2009 at 1:21 am
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November 19th, 2009 at 5:57 pm
Change has a considerable psychological impact on the human mind. To the fearful it is threatening because it means that things may get worse. To the hopeful it is encouraging because things may get better. To the confident it is inspiring because the challenge exists to make things better.