Quote:
Originally Posted by Jerry of San Fran
I have noticed that the top 3 stories are a different metal color. Are these floors the mechanical floors?
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I think the lighter weight steel is for screening to hide the mechanical penthouse and finish off the top of the tower. We saw the same thing on 555 Mission, NEMA (not well done), and many other buildings, especially Salesforce Tower. You can see structural steel for a mechanical penthouse behind the lightweight steel.
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