That work-related settlement has resulted in about 10 inches of additional tilt. That’s equivalent to how much the building has sunk since the so-called fix began. Still Sinking: Construction Halted at SFs Millennium Tower I think this solution that is being built now is not working, said Josh Kardon, a 45-year veteran structural engineer in Berkeley. He says the work could result in as much as two inches of additional settlement. Pyke says he’s concerned that digging down 25 feet and removing dirt on two sides of the structure – where it currently is leaning the most – will mean the loss of earth that is currently buttressing the existing foundation. The engineer for SFs Millennium Tower fix is proposing a new solution to stop the building from sinking any further, but not everyone is convinced. In a March 14 letter to building official Neville Pereira, Pyke wrote, “I am now warning that there are many uncertainties associated with the excavation that is necessary to construct the mat extensions.” “I think it’s very risky,” said veteran local geotechnical engineer Bob Pyke, who has repeatedly warned city officials about the viability of the fix. Millennium fix designer Ron Hamburger has indicated the building is expected to tilt a little more by the time work is done, but experts fear the new digging to make way for an expanded foundation could make the building sink and tilt more than anticipated. Sign up for NBC Bay Area’s Housing Deconstructed newsletter. Get a weekly recap of the latest San Francisco Bay Area housing news.
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