The blighted tower fix may have hit another wall, literally.
San Francisco Chronicle/Hearst N/Hearst Newspapers via Getty Imag
The PPU seeks to halt sinking on the north and west sides of the building through the installation of piles into the bedrock, and subsequently shift weight toward the opposite corner and eventually reverse the tilt, now measured at a significant 28 inches, reportedBut the presence of a 3-foot-thick, 90-foot-tall steel and cement underground wall — installed as part of an earth retention system during the original tower build to enable construction of the five-story-deep parking garage next door...
He added that analysis of the foundation showed that"within about a year of completion of the upgrade project, the northwest building corner will recover about 1-1/2 inches of the past settlement," and that the building should recover around 3 or 4 inches on the north and west sides and continue to level out in"small amounts" over the next 40 years.
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