Despite initial progress in the first phase of the so-called fix earlier this year, the sinking and leaning Millennium Tower in San Francisco is now tilting more to the west than ever, according to monitoring data reviewed by the Investigative Unit.
“As far as remedial work goes, this is just a mess,” said veteran geotechnical engineer Bob Pyke, a long time skeptic of the $100 million plan to fix the troubled tower. “You spend all this money, but you still have an uncertain result long term.”
Back in January, fix engineer Ron Hamburger pointed to rooftop-based monitoring data as reflecting early success with the reversal of some of the tower’s western tilt following the transfer of the some of the tower’s load onto piles along Mission Street to the northwest corner. Foundation-based monitoring data fluctuated less when the tower was partly transferred to six piles in January.
But Pyke says the monitoring data proves the tower is once again defying fix engineers’ expectations. At the moment, Pyke says, there’s no way to know if the tower will work as hoped and stop tilting after some of the load is shifted to piles rooted to bedrock on the west side.
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