Public dollars should have NEVER been spent on this project but unfortunately these tenants are very wealthy and behind a good deal of the graft in the city. The water pressure level was recorded at various depths more than 100 feet below the structure, where a layer of clay resides. The most disgusting part of the Millenium Tower Disaster is that The City of San Francisco, and my tax dollars, are footing a portion of the bill. At the same time, there was marked fluctuation of water pressure below the foundation on the Mission Street side of the structure. 19 – shows a quarter inch of new tilt, as well as a tenth of an inch of settlement at the time the test installation occurred. The latest data – including the four days that the test pile was installed from Nov. Since work began to shore the sinking structure up on the north and west sides, the building has settled nearly 2 inches at the northwest corner and is now tilting more than two feet at that edge. The monitoring data tracks settlement, tilting and water pressure levels underneath the sinking and leaning structure since work began on a fix for the troubled tower in May.
Millennium tower tilts quarter four days install#
NBC Bay Area TV Newly released monitoring data shows that San Francisco’s Millennium Tower tilted a quarter inch during the four days it took to install the first test pile to bedrock last month. The only engineering expert I know who has experience of this magnitude is Mayor Teedy. The plan is to have the building load partly shifted to those piles in a matter of days.San Fran needs to consult with an expert on these types of things before this gets out of hand. The tilting trend comes as fix engineers are moving forward with securing the foundation to the dozen piles sunk along Fremont Street. “So far the evidence seems to suggest that’s not going to happen.”
“The design team has always claimed that there is going to be some rebound after they connect the perimeter piles,” Pyke said.
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. movement of the roof to the west.”īut Pyke says the monitoring data proves the tower is once again defying fix engineers’ expectations. “We are fully confident that following transfer of the remaining design load to the piles,’’ Hamburger told us in a statement, “there will be no further …. Hamburger said he considers that amount of added tilt “negligible.”
It currently shows the tower is tilting more than ever to the west, but only by about a quarter of an inch. He pointed to foundation-based data as being more reliable.įoundation-based monitoring data fluctuated less when the tower was partly transferred to six piles in January. In a statement, Hamburger indicated that the rooftop data is prone to weather fluctuations. As a result, the tower is now leaning about a half-inch more to the west than before it was first supported along Mission. One reflects rooftop measurements, the other, foundation-based determinations.īack 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.īut in recent weeks, the rooftop data is reflecting the loss of the improvement and a trend of worsening tilt. San Francisco’s swanky Millennium Tower has been slowly sinking for years and, as a result, the 58-story skyscraper tilted at a rate of up to 3 inches to the north. The engineers have relied on two types of measurement to determine lean. In responding to questions about the tower, engineers in charge of the project cast doubt on the reliability of the rooftop-based data they had cited when they declared some early success. “You spend all this money, but you still have an uncertain result long term.” “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. 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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