Fix engineers billed the original 52-pile plan as not only preventing more sinking, but also reversing the tilt.
San Francisco building officials have formally signed off on a scaled-down plan to fix the sinking and tilting Millennium Tower, a key hurdle that fix officials say will allow engineers to do the work needed to support one corner of the building to bedrock by the end of this year.
The revised plan relies on just 18 piles, instead of the original 52, to anchor the high-rise to bedrock on the two sides where it leans and tilts the most, on Mission and Fremont streets.
Fix engineers billed the original 52-pile plan as not only preventing more sinking, but also reversing the tilt.
But now that the city has approved the scaled-down plan, fix engineers say the work at the corner of the tilting tower should be done by year’s end. While an outside expert questioned the assumptions of the computer models used for the fix, its engineers stand by their assertions that the 18 piles are enough to stop the sinking and reverse some of the tilt. The building currently leans about 29 inches at the northwest corner.
Fix officials say the building’s elevator and life-safety systems would start to fail should the building reach 40 inches of tilt.
www.nbcbayarea.com
Watch it fall over before they can fix it.
San Francisco building officials have formally signed off on a scaled-down plan to fix the sinking and tilting Millennium Tower, a key hurdle that fix officials say will allow engineers to do the work needed to support one corner of the building to bedrock by the end of this year.
The revised plan relies on just 18 piles, instead of the original 52, to anchor the high-rise to bedrock on the two sides where it leans and tilts the most, on Mission and Fremont streets.
Fix engineers billed the original 52-pile plan as not only preventing more sinking, but also reversing the tilt.
But now that the city has approved the scaled-down plan, fix engineers say the work at the corner of the tilting tower should be done by year’s end. While an outside expert questioned the assumptions of the computer models used for the fix, its engineers stand by their assertions that the 18 piles are enough to stop the sinking and reverse some of the tilt. The building currently leans about 29 inches at the northwest corner.
Fix officials say the building’s elevator and life-safety systems would start to fail should the building reach 40 inches of tilt.
San Francisco Approves Scaled-Down Millennium Tower Fix
San Francisco building officials have formally signed off on a scaled-down plan to fix the sinking and tilting Millennium Tower, a key hurdle that fix officials say will allow engineers to do the work needed to support one corner of the building to bedrock by the end of this year.
www.nbcbayarea.com
Watch it fall over before they can fix it.
