What is wrong with the Salesforce Transit Center?
Some local news - a new transit center built alongside the massive Salesforce Tower was discovered to have cracks in its support beams, prompting its closure. An angle on that I did not yet know:
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For some insights we spoke with David Williams, a structural engineer who specializes in large infrastructure projects.
Q. One of the stipulations in the construction of the Transbay terminal was that materials had to be sourced in the United States. Given that so much steel is produced outside America these days, was this a potential factor in the quality of the beams that fractured?
A. It’s extremely limiting for the project managers to buy this type of American steel. It’s available, but you have a very short list of suppliers and it’s often a special order. It’s like going to get a heart valve from someone who does one every six months instead of every six days.
AMERICAN STEEL: cracking under pressure (literally)