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O.T.--San Francisco's 58-story Millennium Tower is upscale, but literally sinking fast

step.eng69

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Nov 7, 2012
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North East PA, Backmountain area, age 75
Saw this article while taking a short break. I thought it is interesting. A few here may also find the article interesting. :)

Link: http://www.msn.com/en-us/news/us/sa...-fast/ar-AAjppY7?li=BBnb7Kz&ocid=iehp#image=4
The comments are worthy of a look.


SAN FRANCISCO — 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."

It became a game between them, but it also presaged what in the past several months has become a sobering reality for the retired real estate developer and other residents of the 58-story Millennium Tower:

The tower is sinking — 16 inches so far, with projections that the amount could double over time.

And as it sinks, the building also has begun to list ever so slightly — an estimated 2 to 4 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.

"The more it sinks unevenly, the more it is going to tilt," Buttery has been told.

Is she nervous?

"I am not so much nervous as I am distressed," the 76-year-old London native said. "This is not going to be fixed in my lifetime, and it is distressing to not know where I am going to live, and die, basically."

The story of the sinking tower broke in early August, with a front-page report in the San Francisco Chronicle. Since then, it has been a news staple, playing out along a number of narrative plot lines — an engineering whodunit, a slow-motion real estate calamity, and also a civic cautionary tale.

Fueled by a high tech boom and a resultant runaway real estate market — and following the removal of a double-deck highway that ran along the waterfront but was badly damaged by the 1989 Loma Prieta earthquake — a forest of towers has been rising up in San Francisco, especially in the downtown district known as South of Market.

"As you know," Democratic U.S. Sen. Dianne Feinstein, a former mayor of the city, wrote in August to current Mayor Ed Lee, "I have had great concern, generally, with the recent residential and commercial density increase in San Francisco, as well as concern about the City's preparedness for a large scale seismic event.

"Now, to add to that mix of concern, I am left wondering if the City's building code played any role in allowing this sinking and tilting to happen, and whether or not other approved buildings are suffering the same fate."

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 4 to 6 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."

Condo owner Paula Pretlow, a retired financial adviser, was at the meeting. She had watched for years from a nearby office as the tower rose, floor by floor, from a pit in the ground to become a gleaming edifice of concrete and glass — said to be the heaviest high-rise west of the Mississippi.

The tower was being erected on landfill that previously was part of the bay — like much of the eastern flank of the San Francisco Peninsula, and as a prospective buyer, Pretlow took hardhat tours of the building in progress, asking what she thought were all the right questions about the construction quality and safety.

In September, 2010, Pretlow moved in, one of the first occupants on her floor. She leased at first, and then sold her suburban home and purchased the unit outright.

"Never, ever would I have plunked down money in that building had I been given any hint something was wrong," she said. "I was not told the whole truth, and to me that is the same as being lied to."

The timing of the May disclosure was particularly harsh in Pretlow's case. The chaos of constant, industrial-scale construction in the surrounding neighborhood had convinced her the time had come to sell her unit and move somewhere more serene. She had lined up a real estate agent with the intent of listing her condo in June.

Then came the May meeting.

"I felt anger. I felt that I had been duped," Pretlow said. "And I also had a feeling that I should have got out a year ago. I felt, I am stuck, how many years longer am I going to be stuck in this building?"

Dodson and several other condo owners in the tower blame Millennium Partners, the tower builders, for not driving foundational piles 200 feet to bedrock, as was done with a 61-story skyscraper going up across the street. Instead, the builders relied on a concrete foundation attached to piles that were sunk into firmly compacted sand and mud about 60 to 90 feet below.

Such foundations are not uncommon in San Francisco, even on land fill — although many of the buildings so anchored are constructed with lighter, steel frames.

Millennium Partners, in turn, blames a massive construction project underway adjacent to the tower.

In preparing to build a multi-agency transit center for rail and bus, the tower builders maintain, the Transbay Joint Powers Authority has lowered the underground water table beneath the tower, causing settlement.

Millennium Partners and the Transbay authority disagree with equal vigor.

High-rise construction projects also create piles of paper work, and since the disclosure no shortage of conflicting engineer studies and internal documents have come to light. And even more geological surveys are in the works.

Needless to say, the lawyers are circling.

The initial headlines described Millennium Tower as a building for the "rich and famous." And, yes, professional sports stars and high tech heavy hitters — former 49ers quarterback Joe Montana, the late venture capitalist Thomas Perkins — have called it home. And, yes, the cars brought forward by the building valets trend toward Range Rovers and Teslas and Audis.

But there are also longtime suburban homeowners, like Pretlow, who sold in an infamously inflated market and invested in tower living.

"You hear about the rich and famous," said Helena Geng, an immigrant from China who moved into the tower with her husband in 2011, "but to us, this was a large chunk of our money."

Geng's connection to the building is bittersweet. Her 4-year-old twins have lived there since birth. Her husband died there while working out in the tower gym, which is one of the building's much-touted amenities.

"That is why I would have a hard time leaving," she said at a patio table outside the second floor. "There's a lot of history for me here, good and bad."

Like several other residents interviewed, Geng spoke glowingly of life in the tower. She described it as a "vertical neighborhood," where neighbors get to know one another well, gather for special events in the lounge, and at Halloween hand out candy to youngsters who live in the tower.

The sinking, though, has taken its toll. Geng and others speak of sleep interrupted by worry, panicky thoughts about earthquakes, red tags from building inspectors and the prospect of remaining stuck in a real estate abyss.

They circulate photos of the many cracks visible in the basement's concrete walls, and wonder what they might portend. Some feel themselves tense up after they return to the tower after a few days away.

And while safe for occupancy now, there are concerns among some residents about potential threats to the tower's high-speed elevators and sewer connections should the sinking continue — or should a significant seismic event occur.

"The building could go from safe to unsafe in a day," said Dodson, who lives with his wife, Pat, on the 47th floor.

The situation has created factions within the vertical neighborhood. There are those who would have preferred quiet negotiations with Millennium Partners, rather than endless media coverage. And there are those who want to take on the big players — Millennium Partners, the Transbay authority, both — legal guns ablaze.

"Friendships we had have been broken by this," Dodson said, "and other friendships we didn't have before have been born."

While one unit has sold since the sinking went public, the buyer was someone who already owned in the building. And most condo owners fear their units would fetch prices far below what they paid.

Buttery, who bought her high-ceilinged condo for $3.5 million, was one of scores of tower residents who have made their way to the tax assessor's office, seeking to re-adjust the appraised worth of their units.

Filling out the assessment form, she put down that her unit should now be valued at zero.

"The clerk said, 'You can't put down just zero."

"I said, 'OK.'

"And I put down one dollar."

Tower residents worry about being abandoned by the city, left to fend for themselves when it comes to paying for a fix — if there is one. The possible solutions in play so far seem to border on fantasy.

"One prominent architect suggested that you might have to lop 20 stories off the top of the 58-story building to make it light enough so that it will stop descending into the landfill," former Mayor Willie Brown wrote in his weekly Chronicle column. "Another suggested to me that they might have to take the whole building apart and put it back together with a new foundation.

"And they were both serious."

Even worse than a drastic solution would be no solution at all: "Yes," a Millennium Partners spokesperson replied in an email, citing a recent seismic study, "it is quite possible that no major fixes will be required."

Geng recoiled at the suggestion: "No, I do not accept that. With a sinking and leaning building, and without doing anything to the foundation ... ? No, that is unacceptable."

An MIT-educated engineer by training, and a real estate broker by trade, Geng believes a solution can be found that would both shore up the building and also remove its marketplace stigma.

"This is a physics problem," she said. "It can be solved."

She also expressed a belief that eventually both Millennium Partners and the city will do right by the tower residents.

"I'm an eternal optimist," she said finally, as she rose to leave and pick up her twins from school.

Later, Geng sent along a clarifying email to her interviewer: "I know I said I was an eternal optimist. ... However, I don't want this statement to lighten the blame in any way, shape or form on what MP has done so far, and how the city has contributed to our predicament."

The email arrived at 2:53 a.m.

One more sleepless night in the sinking tower.
 
I have to question why someone would want to live in a building in an area that is seismically active. Didn't they see San Andreas?
 
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Was out in the Bay Area in May for the first time in 20 years. Traffic has gone from bad to nearly impossible. Lots of great things about that area (natural scenery, great culture, tons of restaurants, dynamic economy) but the cost of living and congestion have made it unattractive, at least to me.

Travel tip: Don't try to travel there when they have the Bay-to-Breakers road race with thousands of participants.
 
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I have to question why someone would want to live in a building in an area that is seismically active. Didn't they see San Andreas?

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Was out in the Bay Area in May for the first time in 20 years. Traffic has gone from bad to nearly impossible. Lots of great things about that area (natural scenery, great culture, tons of restaurants, dynamic economy) but the cost of living and congestion have made it unattractive, at least to me.

Travel tip: Don't try to travel there when they have the Bay-to-Breakers road race with thousands of participants.
Literally half the city's arteries are shut down for the day. Try NYC on Puerto Rico pride day.
 
So everybody in the building should all together walk to the higher side of the building to level it off.....IIRC, it was either Homer or Bart's idea on The Simpsons years ago.
 
Step.eng69, are you an engineer?
Hi LionJim, just tuned into my phone for s peek at the BWI. Yes Jim, an old one ready for the bone yard. As a young engineering, I worked for Michael Baker , Jr. In the bridge division in Harrisburg. I worked on the New River Gorge bridge., under the supervision of Frank Kempf & Pi Amin. Substructure (piers) on the approach ramps for the Kanawaw (sp) River bridge, I think in Charleston, WV. ? Preliminary abutment designs on the New Hope Lambertville Rt 202 ? bridge and twin cell culvert designs at the Jersey approach. No computers then, slide rules and the clanking huge Monro matic w/13 significant numbers. Guys my age really appreciate the design software available today. I spent a good deal of my career working in construction after my stint with Baker. Surveying, management troubleshooting construction problems.

In 1990, fell-jumped 20' during construction of the Norristown interchange of the Blue Route. Lost my function in my legs, had several back operations over a couple of years, on disability for five years at the time both of my kids were at PSU. What a hard finicial time. My employer asked me to get my PE, told me it would be a great contribution to his company. So I guess I was 48 years young giving it the old college try. I took my EIT in 1974.

Today l work in our civil division performing structural consultant design for Verizon and occasionally other carriers. I'm involved with structural modifications to buildings, water towers, etc. for Verizon installations.

Bringing with a small design firm, I was also involved with the many aspects of hydrology & hydraulics for around 8 years.

Good night...bed time for this Bonzo.
 
thanks for the bio, step.

sorry to hear about your fall, but it sounds like it didn't keep a good man down.
Agree, awesome post. My grandfather was a civil engineer as well, in Washington. It's very nice to be able to drive over bridges he worked on (Taft Bridge and 14th Street Bridge), or to go to the National Cathedral, knowing that he worked there.
 
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Interesting story. Similar thing happened with the Mandalay bay in vegas but it wasn't on piles. They stopped settlement by drilling micropiles through the foundations down to competent bedrock. Not sure if that is feasible on this building. They would have to be deep.
 
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Hi LionJim, just tuned into my phone for s peek at the BWI. Yes Jim, an old one ready for the bone yard. As a young engineering, I worked for Michael Baker , Jr. In the bridge division in Harrisburg. I worked on the New River Gorge bridge., under the supervision of Frank Kempf & Pi Amin. Substructure (piers) on the approach ramps for the Kanawaw (sp) River bridge, I think in Charleston, WV. ? Preliminary abutment designs on the New Hope Lambertville Rt 202 ? bridge and twin cell culvert designs at the Jersey approach. No computers then, slide rules and the clanking huge Monro matic w/13 significant numbers. Guys my age really appreciate the design software available today. I spent a good deal of my career working in construction after my stint with Baker. Surveying, management troubleshooting construction problems.

In 1990, fell-jumped 20' during construction of the Norristown interchange of the Blue Route. Lost my function in my legs, had several back operations over a couple of years, on disability for five years at the time both of my kids were at PSU. What a hard finicial time. My employer asked me to get my PE, told me it would be a great contribution to his company. So I guess I was 48 years young giving it the old college try. I took my EIT in 1974.

Today l work in our civil division performing structural consultant design for Verizon and occasionally other carriers. I'm involved with structural modifications to buildings, water towers, etc. for Verizon installations.

Bringing with a small design firm, I was also involved with the many aspects of hydrology & hydraulics for around 8 years.

Good night...bed time for this Bonzo.

You are about the 3rd or 4th person I know who sustained serious injuries when the Blue Route was being built. Thing seemed like it had bad karma being built. Love the road when it's not a parking lot. Waited so long for that thing to be built. Only thing that drives me nuts is the going down to 2 lanes around Swarthmore College. I see both sides of that argument but man does that cause backups and delays. It screams for another lane in there....
 
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Only thing that drives me nuts is the going down to 2 lanes around Swarthmore College. I see both sides of that argument but man does that cause backups and delays. It screams for another lane in there....

It goes down to 2 lanes at the Rt. 3 exit, which is 2 exits before Swarthmore.

Swarthmore College lost a lot of property to the Blue Route, and despite the sound barriers you can hear the cars on the Interstate while walking on Swarthmore's campus. I don't fault the college, or folks from that area, from really fighting the road before it was built.

The flip side is that the road-use numbers exceed the projections, and as such the stretch from Rt. 3 to I-95 is a mess during rush hour. The lights on the on-ramps had almost no impact on the problem.

Unlikely that much will change about the situation. The 2 lanes were part of the court ruling that allowed the Blue Route to be built. You'd have to get the parties to the lawsuit to agree to expand the road, then get the Fed and the State to come up with the money.
 
It goes down to 2 lanes at the Rt. 3 exit, which is 2 exits before Swarthmore.

Swarthmore College lost a lot of property to the Blue Route, and despite the sound barriers you can hear the cars on the Interstate while walking on Swarthmore's campus. I don't fault the college, or folks from that area, from really fighting the road before it was built.

The flip side is that the road-use numbers exceed the projections, and as such the stretch from Rt. 3 to I-95 is a mess during rush hour. The lights on the on-ramps had almost no impact on the problem.

Unlikely that much will change about the situation. The 2 lanes was part of the court ruling that allowed the Blue Route to be built. You'd have to get the parties to the lawsuit to agree to expand the road, then get the Fed and the State to come up with the money.

Yup... I agree and see both sides of that. Just wish there was a workable solution for all. If your not on it at peak rush hour it's a wonderful road to drive. Made getting to relatives in Havertown and Main Line so much easier for me.
 
You are about the 3rd or 4th person I know who sustained serious injuries when the Blue Route was being built. Thing seemed like it had bad karma being built. Love the road when it's not a parking lot. Waited so long for that thing to be built. Only thing that drives me nuts is the going down to 2 lanes around Swarthmore College. I see both sides of that argument but man does that cause backups and delays. It screams for another lane in there....
I'm heading to a field hockey game in 10 minutes. tomorrow if I remember :oops:, I'll fill you in on one of the issues for the congestion. From my understanding, the highway was on the design boards some 20 years previous to the actual start in the late 80's. The high way was to be designed with more lanes than actually were constructed. It took so long to get the project underway (due to several issues) that the construction costs soared beyond the projected costs that the highway was redesigned and scaled back to eliminate the original capacity and reduced the traveling lanes. my best shot in the time allotted...I'm going.
 
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