Given that Millennium Tower is subsiding in part because of the excavation for the Salesforce Tower and Transbay Terminal, there's your future heavier building right there.
In other news, it's not sinking so straight anymore.
San Francisco's 58-story Millennium Tower is upscale, but literally sinking fast
Peter H. King
October 22, 2016
Looking back, Pamela Buttery can recall an early clue that something could be amiss at the luxury high-rise where she’s lived for the past six years.
A golfer, she sometimes practiced her putting indoors, tapping the ball toward a portable cup on the hardwood floor in her living room.
If Buttery missed, the ball would carom off the wall and strangely change course, swerving right and gaining momentum as it rolled toward the northwest corner of her condo. At which point, she said, her cat Maximus would “go racing after the ball.”
And as it sinks, the building also has begun to list ever so slightly — an estimated two to four inches at the structure’s base and 14 inches at the top, where Buttery’s unit sits at the northwest corner of the next-to-highest floor.
While a paper trail of concern about potential settling leads back to early 2009, even before the Millennium Tower was ready for occupancy, most residents of the building knew nothing about any issue with the foundation until they were summoned in early May to a private meeting in a lounge on the tower’s club level.
Identification was checked at the door. Residents were told that what they were to hear must be kept a secret. A lawyer introduced a structural engineer who delivered, as Buttery and others recall, a simple statement that startled the packed room:
“The Millennium building is too heavy for its foundation.”
Not only had the tower settled by far more than the four to six inches originally forecast for the life of the building but, “most importantly,” recalled Jerry Dodson, a retired patent lawyer and a vocal critic of the tower’s builders, the engineer said “it wasn’t stopping.”
Dodson has since heard estimates that the building could sink anywhere from 30 to 48 inches, “but nobody really knows.”
Violations found in repairs to sinking, tilting luxury high-rise
By J.K. Dineen
October 28, 2016 Updated: October 29, 2016 6:57am
San Francisco’s Department of Building Inspection has filed two notices of violation against Millennium Tower, saying the owners made unauthorized repairs to address issues caused by the building’s sinking.
The department found spalling and leaking in the underground parking garage, as well as repairs that had been done without permits. DBI ordered the building owner to obtain permits for the work already done and provide an engineering report on the condition of water intrusion and cracking in the garage walls.
A second violation charges that two ramps on the Millennium complex’s ground floor — one connects the 58-story condominium tower to the adjacent 11-story podium, and the other goes to the rear porte cochere — are steeper than the maximum slope allowed by state building codes. The handrails were also found to be out of compliance. Both must be corrected within 90 days.
Building Inspector Daniel Lowery said that the slope of the ramps had clearly become steeper during settlement and that the owner had tried to correct the problem.\
Agency says it will keep pumping water near leaning SF tower
By J.K. Dineen
September 21, 2016
The Millennium tower on the lower right, across the street from the location of a new proposed plaza tucked into the southwest corner of Mission and Fremont Streets intersection in San Francisco , Calif., on ... more
The public agency building the Transbay Transit Center says it will keep pumping groundwater from beneath the construction site well into 2017, despite claims the process is contributing to the sinking of the Millennium Tower next door.
The Transbay Joint Powers Authority said the dewatering, which is performed to maintain a dry work site, would continue for the foreseeable future at the $4.5 billion transit center.
“At some point prior to completion of the transit center in late 2017, construction will have progressed to the point that the weight of the transit center is sufficient to counterbalance the upward water pressure, and dewatering can cease,” the authority said in a statement.
The statement comes after executives with Millennium Partners, which built the 419-unit luxury condominium tower at First and Mission streets, accused the authority of “a pattern of reckless behavior” that has caused the 58-story building to sink 16 inches and tilt 2 inches to the northwest at its base.
In particular, they said the water table under the high-rise has dropped at least 20 feet since construction started on the transit center in 2012. The dewatering caused the compression and weakening of the soil under the tower’s foundation, Millennium contends. The tower, at 301 Mission St., opened in 2009.
The blame game continues.