Major Concrete Issues Found in Silver Line Metro Extension

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Major Concrete Issues Found in Silver Line Metro Extension

Postby davinp » Wed Apr 25, 2018 12:29 pm

Significant concrete issues have been found in potentially thousands of locations along the second phase of the $2.7-billion Silver Line Metro extension in Northern Virginia, project officials say.

https://www.nbcwashington.com/traffic/t ... 29661.html
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby JDC » Wed Apr 25, 2018 12:39 pm

davinp wrote:Significant concrete issues have been found in potentially thousands of locations along the second phase of the $2.7-billion Silver Line Metro extension in Northern Virginia, project officials say.

https://www.nbcwashington.com/traffic/t ... 29661.html


I think the key takeaway is that most of the 'locations' are the pre-cast station 'walls' with a smaller amount in other areas. None seemed directly to have to do with structures holding up the rails.
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby YamaOfParadise » Wed Apr 25, 2018 1:02 pm

Were there separate contractors for the stations themselves?
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby Sand Box John » Wed Apr 25, 2018 1:10 pm

It would seem to me that somebody in quality control would have kept track of the weights of the raw material coming in and compared that to the weight of the finished product going out. The weight of the portland cement coming in not jiving with the cubic yards of the finished product going out should automatically throw up a red flag. Residencies in quality control should easily discover measuring calibration issues in the batch plant.
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby Chris Brown » Wed Apr 25, 2018 6:10 pm

Someone is definitely getting fired. Heads will roll.
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby JackRussell » Thu Apr 26, 2018 6:42 pm

JDC wrote:
davinp wrote:Significant concrete issues have been found in potentially thousands of locations along the second phase of the $2.7-billion Silver Line Metro extension in Northern Virginia, project officials say.

https://www.nbcwashington.com/traffic/t ... 29661.html


I think the key takeaway is that most of the 'locations' are the pre-cast station 'walls' with a smaller amount in other areas. None seemed directly to have to do with structures holding up the rails.


It isn't just walls, but there were precast sections that were assembled for the platform itself.
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby YOLO » Wed May 16, 2018 1:52 pm

Feds have stepped in and are now investigating a whistleblower claim for this: https://twitter.com/AdamTuss/status/996825463216594947

Looks like contractors falsified the QC data: https://pbs.twimg.com/media/DdV9mC6W0AA9fO8.jpg
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Re: Major Concrete Issues Found in Silver Line Metro Extensi

Postby Sand Box John » Wed May 16, 2018 7:54 pm

Silver Line concrete problems flagged a year earlier in whistleblower lawsuit
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What makes this more incredible is, someone in the food chain knew something was not as it was suppose to be around the time precast panel deliveries were beginning to be ramped up.
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