Bridge drawings as security sensitive information?
Bridge drawings as security sensitive information?
(OP)
Has anyone run into having your bridge plans and shop drawings declared to be SSI?
Considering that it doesn't take a whole lot of mechanical aptitude to eyeball a bridge, no plans in hand whatsoever, and determine what areas one would need to take out to bring down the structure, this notion is pretty ludicrous.
But that's not a decision most of us here get to make.
So...have you run into this? How does control of SSI work in a fabrication environment with dozens of workers, multiple customers, etc.? Or even an erection environment where it is just the one project but still dozens of workers and probably several different business and government entities?
Hg
Considering that it doesn't take a whole lot of mechanical aptitude to eyeball a bridge, no plans in hand whatsoever, and determine what areas one would need to take out to bring down the structure, this notion is pretty ludicrous.
But that's not a decision most of us here get to make.
So...have you run into this? How does control of SSI work in a fabrication environment with dozens of workers, multiple customers, etc.? Or even an erection environment where it is just the one project but still dozens of workers and probably several different business and government entities?
Hg
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RE: Bridge drawings as security sensitive information?
If you have a thousand pounds of TNT - you could probably take out any bridge... BUT if you know how it was put together - maybe a pound or two would be enough.
During WWII - a British or US army unit lost much of their TNT. They were trying to hold off the Japs by blowing their bridges. Some ingenious guy kind of invented the "shaped" charge on the spot and they were able to do the work with about 10% of the TNT thought to be required.
Get used to it - it is a coming thing...
RE: Bridge drawings as security sensitive information?
When I was in college in the 70's my structursl snslysis professor gave a lecture on the World Trade Center design. He said all the strength is in the perimeter. In 1993 after the first WTC attack I thought to myself, those guys weren't paying attention in class that day becase they put the truck bomb in the middle of the footprint. Sadly, the next group of terrorists were paying attention in class that day.
RE: Bridge drawings as security sensitive information?
I suppose they lock the doors now.
RE: Bridge drawings as security sensitive information?
RE: Bridge drawings as security sensitive information?
RE: Bridge drawings as security sensitive information?
RE: Bridge drawings as security sensitive information?
RE: Bridge drawings as security sensitive information?
Then, using the tightly controlled drawings, you have the bridge "detailed".
The Detail drawings are broken down to "piece" drawings, and those are issued - openly - to the various fabricators. Without a Design, or Erection, drawing the individual "piece" drawings are meaningless. And to be even more devious, add in a few 'dummy' pieces to really mix up anyone trying to establish what the final design will look like.
RE: Bridge drawings as security sensitive information?
Most engineers can look at a structure and know where the 'weak link' is or where damage would be greatest with a minimal charge.
By vetting contractors and restricting the documents, you are restricting youself to 10% of the construction firms with a huge increase in cost.
Dik