![]() ![]() The transit center, for their part, says they bear "no responsibility for the tilt and excessive settlement." Johnston, a spokesperson for Millennium Partners, lays blame on Transbay construction, telling Matier and Ross, "They built a half-mile tunnel 60 feet underground and next to our building, and they were supposed to (protect the Millennium) - and they didn’t."Ī photo posted by Erica Webb on at 1:01pm PDT That was 4 inches more than its builders had predicted for the life of the high-rise. The problem first came to light in 2010 when the Transbay Joint Powers Authority, the public agency constructing the transit center, hired the consulting firm Arup to gauge how the excavation could affect the tower.Īccording to the consultant’s initial report, by the time excavation began - two years after the $350 million Millennium was completed - the tower had already settled 10 inches. In lieu of publicly taking responsibility, the building’s owners have placed the blame on neighboring construction. Blume Earthquake Engineering Center at Stanford University, who has been called in to evaluate the designs of a couple of San Francisco’s newer downtown high-rises. and of concern," said Professor Greg Deierlein, director of the John A. It has also tilted 2 inches to the northwest. ince its completion in 2008, the 58-story building has sunk 16 inches, according to an independent consultant hired to monitor the problem. Rumors of the structure’s slow sinkage have been swirling over the last few months, but today the Chronicle has confirmed that the sleek, lauded building isn’t what it’s cracked up to be. The tony high-rise, currently offering the most expensive one-bedroom in the city, houses such luminaries as Hunter Pence, Joe Montana, and a slew of tech brethren. “It’s in everyone’s interest that this project is completed as quickly as possible,” he concluded.The Millennium Tower, located in Yerba Buena next to the Transbay and Salesforce Tower constructions, is a symbol of the new San Francisco wealth. Installing 18 steel piles to bedrock now is the best way to stop the tilting and possibly reverse some of it, he told supervisors. The building remains safe, but although the building remains safe, we believe the project needs to resume construction and complete this construction quickly.”Īt the current rate, the tower’s lean could reach the functional 40-inch maximum – the point Hamburger says the elevators and plumbing may not continue to operate – in just a few years without the fix. “It is doing this whether we are conducting work at the site or not. “The building does continue to settle at a rate of about one half inch per year and to tilt at a rate of about three inches per year,” he said. Hamburger separately revealed that the building continues to tilt at the rate of three inches per year. “I don’t think there’s a lot of room here for on-the-job learning.” “This is a 50-plus story building, very heavy, in the heart of downtown San Francisco,” Peskin countered. ![]() Peskin turned to city officials, who assured him that was standard practice for such projects. And he basically did those as a design build to install the piles in which he determined the methods by which he would install them.” We specified that we needed piles of a given diameter and strength. “We did not tell them how to install piles. ![]() “The procedures for installing piles were basically the contractor’s prerogative,” Hamburger told city supervisors. In his remarks, Hamburger acknowledged for the first time that his team did not provide any initial guidance to Shimmick Construction, the fix contractor, on ways to limit the impact of the drilling and digging to install steel support piles. “We start this new year 2022 as we ended last year and many other years, with the Millennium Tower continuing to sink and tilt,” a clearly exasperated Peskin said before introducing fix engineer Ron Hamburger at the hearing. Monitoring data shows that 10 inches of that tilt and about 2 inches of settlement occurred during work on the so-called fix last year. 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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