![]() ![]() ![]() Had it done so, the agency said, "the tower would not be tilting today." "To cut costs, Millennium did not drill piles to bedrock," or 200 feet down, the transit center authority said in its statement. The Millennium’s engineers anchored the building over a thick concrete slab with piles driven roughly 80 feet into dense sand. Also, as the Chronicle points out, "the building is located on unstable mud-fill, just off the bay’s original shoreline." In fact, there stands several reasons why the Millennium is sinking-for starters, it's not steel-framed and instead uses a concrete design. 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. The Millennium Tower, located in Yerba Buena next to the Transbay and Salesforce Tower constructions, is a symbol of the new San Francisco wealth. ![]()
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