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Bay Bridge shock absorbers spring leak (Retrofit parts gone bad.. what else is new?)
SFGate.com ^ | 7/19/13 | Phillip Matier And Andrew Ross

Posted on 07/20/2013 9:04:04 AM PDT by NormsRevenge

While broken bolts on the new eastern span of the Bay Bridge are commanding everyone's attention, Caltrans has another problem on its hands - 96 seismic shock absorbers on the western span, some of which began leaking lubricant just three years after they were installed.

The estimated cost of the fix - $13 million.

And, like the brittle bolts on the eastern span, there are questions as to whether Caltrans ordered the right shocks - or dampers, as they are known - in the first place.

The dampers are located between the bridge towers just below the roadway, and are intended to dissipate energy from an earthquake and reduce stress on the structure.

Caltrans installed them in 2004 as part of a $670 million seismic upgrade of the western span and its approaches. Transportation officials expected them to last 20 years.

But by 2007, Caltrans officials say, a dozen of them began leaking.

The number has since grown to 37.

(Excerpt) Read more at sfgate.com ...


TOPICS: News/Current Events; US: California
KEYWORDS: absorbers; bay; bayarea; baybridge; bridge; caltrans; leak; oakland; sanfrancisco; shock; shockabsorbers; spring
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They could have built a pontoon bridge for half the price and twice as reliable as the monster now standing (but no one knows for how long it will remain doing so). :-)
1 posted on 07/20/2013 9:04:04 AM PDT by NormsRevenge
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Too big to fail?

We’ll see.


2 posted on 07/20/2013 9:04:47 AM PDT by NormsRevenge (Semper Fi --)
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To: NormsRevenge

Weren’t the steel parts made in China?


3 posted on 07/20/2013 9:05:00 AM PDT by bboop (does not suffer fools gladly)
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To: bboop

Surprise! They don’t need no stinking bomb to cripple us...


4 posted on 07/20/2013 9:06:23 AM PDT by Shady (Creed of the PC Police: You're guilty when we say you are...)
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To: NormsRevenge

They should have gone to Midas.


5 posted on 07/20/2013 9:12:30 AM PDT by smokingfrog ( ==> sleep with one eye open (<o> ---)
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To: bboop

Ya, I thought this bridge rebuilding project was done in China. How the heck that was okay with the liberals and labor leaders is beyond me. Democrats run California now, so they can’t blame any of this on the GOP or George W. Bush.


6 posted on 07/20/2013 9:13:27 AM PDT by Dilbert San Diego
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To: NormsRevenge

Rubber and oil......


7 posted on 07/20/2013 9:13:48 AM PDT by Gaffer
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To: Shady

“Surprise! They don’t need no stinking bomb to cripple us...”

That bridge is in San Fransicko, California.

That place has crippled itself long ago.


8 posted on 07/20/2013 9:14:24 AM PDT by GladesGuru (Islam is antithetical to, and Islam isS irreconcilable with, America. Therefore - Islam Delenda Est)
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To: NormsRevenge

Look for the union label...


9 posted on 07/20/2013 9:14:37 AM PDT by stboz
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To: NormsRevenge

Parts probably made in China.


10 posted on 07/20/2013 9:17:02 AM PDT by The Great RJ (construction)
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To: Shady
They don’t need no stinking bomb to cripple us...

Cripples are crippling us.

Every one has an excuse for why they should get treated differently than others.

Those perceived inequities are then used by the government to spend our tax money on luxury yachts.

11 posted on 07/20/2013 9:18:00 AM PDT by UCANSEE2 (The monsters are due on Maple Street)
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To: NormsRevenge; All

So NOBODY could be bothered to read even the short excerpt? Entirely different bridge, folks. They are talking about the seismic retrofit to the western span which connects Treasure Island to San Francisco, not the new eastern span.


12 posted on 07/20/2013 9:22:49 AM PDT by ProtectOurFreedom
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To: NormsRevenge

Third World governance is now, as in Detroit, starting to take its toll. People are deceived in that it takes a period of time for the fruits of Third World governance to become manifest. California as Detroit under proper governance accumulated massive wealth which takes time even under Third World governance to dissipate. For example, Detroit took sixty years to reach its current state. Slowly, ever slowly at first the rot sets in. Then at an ever increasing rate the “infrastructure” heads towards final collapse all while Mayor WooMoo Mugzabze has fifty billion in the bank, 85 white mistresses, one thousand brand new Rolls Royce, twenty five thousand uniformed retainers with shaved heads and who are trained to scowl.


13 posted on 07/20/2013 9:24:42 AM PDT by AEMILIUS PAULUS (It is a shame that when these people give a riot)
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To: NormsRevenge

Malfeasance or misfeasance either way the tax-payer looses.


14 posted on 07/20/2013 9:27:56 AM PDT by fella ("As it was before Noah, so shall it be again,")
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To: The Great RJ

They WERE made in China.


15 posted on 07/20/2013 9:33:37 AM PDT by bboop (does not suffer fools gladly)
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To: ProtectOurFreedom

Haha, we don’t need no stinkin’ facts.


16 posted on 07/20/2013 9:34:20 AM PDT by bboop (does not suffer fools gladly)
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To: NormsRevenge

The bridge has shock absorbers??

That’s exactly the kind of cultural luxury the Democrats don’t believe in. It takes away from the boob-belt and golf-club collection of the WH.


17 posted on 07/20/2013 9:35:40 AM PDT by Hardraade (http://junipersec.wordpress.com (Obama: the bearded lady of Muslim Brotherhood))
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To: ProtectOurFreedom

” the western span which connects Treasure Island to San Francisco”

Actually its Yerba Buena Island - TI or Treasure Island has a causeway connecting it to the bridge access at YBI.


18 posted on 07/20/2013 9:35:48 AM PDT by Bobibutu
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To: bboop

If the facts stink
u must unthink


19 posted on 07/20/2013 9:37:22 AM PDT by Hardraade (http://junipersec.wordpress.com (Obama: the bearded lady of Muslim Brotherhood))
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To: ProtectOurFreedom

20 posted on 07/20/2013 9:37:44 AM PDT by al baby (Hi Mom)
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To: Bobibutu

Good Herb Island....as far as the best translation Ive been able to find goes.

is there any wonder that there’d be a Good Herb Island in San Francisco Bay?


21 posted on 07/20/2013 9:40:48 AM PDT by MeshugeMikey
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To: smokingfrog
"They should have gone to Midas."

Nah they didn't need the him on the project. But I am sure the price tag for the structure was close to what such a thing would actually cost, to make it out of gold.

22 posted on 07/20/2013 9:42:23 AM PDT by Mad Dawgg (If you're going to deny my 1st Amendment rights then I must proceed to the 2nd one...)
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To: NormsRevenge

Lowest bidder?


23 posted on 07/20/2013 9:51:29 AM PDT by onedoug
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To: Dilbert San Diego

Senator Diane Feinstein and her husband Dick Blum own steel mills in Shanghai.

That is why the democrats ordered the project be done by the Chinese. Its a win—win for the Blums and the communists.

Jerry Brown and former governor Arnold Schwarzenegger also in bed with the chicoms.

Brown is sending a lot of California taxpayer dollars to China as well, he is a penultimate jerk.


24 posted on 07/20/2013 9:54:29 AM PDT by hedgetrimmer
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To: hedgetrimmer

And the MSM recently has been praising Brown for solving California’s budget problems, and turning around California. Go figure. A Democrat can do no wrong, apparently.


25 posted on 07/20/2013 9:57:59 AM PDT by Dilbert San Diego
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To: Bobibutu

Big Whoops! You’re right, of course. No coffee yet today. My Dad learned SONAR on TI back in WW II.


26 posted on 07/20/2013 9:58:22 AM PDT by ProtectOurFreedom
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To: hedgetrimmer

Different bridge and project, HT!


27 posted on 07/20/2013 9:59:32 AM PDT by ProtectOurFreedom
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To: bboop

There are to bridges connected by an island. This story is about the section that is not being replace. It was built in the 1930’s and I am fairly sure we were not importing parts from china back then.


28 posted on 07/20/2013 10:04:03 AM PDT by ThomasThomas ("We make a living by what we get. We make a life by what we give.")
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To: Gaffer
Rubber and oil......

Naw, I'd guess they're getting excessive piston and cylinder wear from the unexpected daily temperature excursions. Those are big old shock absorbers.

29 posted on 07/20/2013 10:04:24 AM PDT by Ole Okie
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To: NormsRevenge

“They could have built a pontoon bridge for half the price and twice as reliable as the monster now standing (but no one knows for how long it will remain doing so).”

So tell us, how would you get up to the level of the tunnel on Yerba Buena Island the feeds onto the western span? That would be some ramp!


30 posted on 07/20/2013 10:09:40 AM PDT by vette6387
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To: Ole Okie

You got it right. From the article:

“The original specifications weren’t very clear,” said Bob Schneider, a project manager for Taylor Devices, the North Tonawanda, N.Y., company that supplied the dampers.

Schneider said Caltrans had understated how much bridge movement the dampers would be subjected to on a daily basis from wind, traffic vibrations and temperature changes.


31 posted on 07/20/2013 10:11:14 AM PDT by Jordo
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To: The Great RJ
“Parts probably made in China.”

Actually the bolts that are failing were made here in the US. What is vexing to me is that they had them “plated” to protect against corrosion when they knew ( or should have known) that plating causes “hydrogen embrittlement” which makes the bolts susceptible to brittle fracture.

32 posted on 07/20/2013 10:12:58 AM PDT by vette6387
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To: AEMILIUS PAULUS

You actually expect FReepers to read an article before commenting? WoW! The Hubris!


33 posted on 07/20/2013 10:33:15 AM PDT by mad_as_he$$
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To: ProtectOurFreedom

I’m 4th gen Bay Area (Oakland). Stationed on TI 60-61. General electronics and RADAR.


34 posted on 07/20/2013 10:39:48 AM PDT by Bobibutu
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To: NormsRevenge
You would think they would use more thought in what they install on that bridge... After all, it is the longest bridge in the World!

It connects Little Africa all the way to Fairyland!

35 posted on 07/20/2013 10:44:48 AM PDT by JDoutrider
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To: NormsRevenge

The dampers are not on the new bridge. They are on the old suspension bridge between Yerba Buena island and San Francisco. They are intended to damp out the longitudinal “slamming” motion of one section of the bridge slamming into the neighboring sections during an earthquake. The intent is that when a jarring earthquake is done shaking the bridge, the sections come to a rapid stop rather than continuing to smash each other to smithereens.


36 posted on 07/20/2013 10:48:19 AM PDT by Freedom_Is_Not_Free (Free goodies for all -- Freedom for none.)
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To: Jordo

To deal with the extra wear and tear, Shuck says, Caltrans is “looking at replacing them in a way that the absorbers don’t have to engage during small movements.”
*****************************************
Simple fix , elongated bolt holes, soft rubber mount bushings or a linkage system that allows for a few inches of movement... these shocks aren’t supposed to damp every .25” movement because of a breeze , that causes unnecessary wear in a concentrated area.


37 posted on 07/20/2013 10:53:19 AM PDT by Neidermeyer (I used to be disgusted , now I try to be amused.)
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To: Mad Dawgg


38 posted on 07/20/2013 10:57:39 AM PDT by smokingfrog ( ==> sleep with one eye open (<o> ---)
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To: bboop
Weren’t the steel parts made in China?

It appears they did not take the continued traffic motion into consideration. Looks like the Devices are made in the USA and exported.

This appears to be nothing more than an "expensive" learning curve in technology adoption.
39 posted on 07/20/2013 11:06:53 AM PDT by PA Engineer (Liberate America from the Occupation Media.)
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To: Ole Okie
daily temperature excursions

A vintage motorcycle I have sprung three separate seeping-type leaks when the temperature rose to 105F recently. 60 at night. Both rubber seals and metal-to-metal joints. Now at 95 leaking has stopped. Another bike experienced actual damage from excessive expansion of the metal frame (plastic gas tank split -- I have hogged out the mounting holes on the new tank).

40 posted on 07/20/2013 11:28:18 AM PDT by steve86 (Acerbic by Nature, not NurtureĀ™)
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To: NormsRevenge
Let's see: 96 seismic shock absorbers expected to last 20 years, of which 37 have failed in 9 years.

So, where is the warranty?

41 posted on 07/20/2013 11:35:28 AM PDT by Carry_Okie (The Slave Party, advancing indentured constituency for 150 years.)
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To: Dilbert San Diego

“And the MSM recently has been praising Brown for solving California’s budget problems, and turning around California. “

Brown is simply “basking” in a windfall of investment sales taxes that occurred at the end of last year when there was no certainty about investment tax rates not changing. Brown’s “recovery” is a 360 which later this year will be back on track into the financial toilet. Worse still will be the fact that the RAT legislators wasted no time spending all the windfall.


42 posted on 07/20/2013 11:41:18 AM PDT by vette6387
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To: MeshugeMikey
Good Herb Island....as far as the best translation Ive been able to find goes.

Actually, the Spanish translates to "mint," of which the most likely species is Satureja douglasii, which goes by the common name "yerba buena." It is a widely distributed groundcover and smells absolutely wonderful when you walk on it.

43 posted on 07/20/2013 11:42:27 AM PDT by Carry_Okie (The Slave Party, advancing indentured constituency for 150 years.)
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To: vette6387

Yep, the Democrats did spend the windfall.

Well, politically, Democrats control California now. They have all constitutional officers, from governor on down, as well as big majorities in both State Assembly and State Senate. Whatever happens in California can NOT be blamed on the GOP. So when things go south again in California’s financial situation, Jerry Brown will have only himself and his fellow Democrats to blame.


44 posted on 07/20/2013 11:46:50 AM PDT by Dilbert San Diego
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To: vette6387

I doubt they spent it they and their buddies merely pocketed any funds.


45 posted on 07/20/2013 1:03:04 PM PDT by AEMILIUS PAULUS (It is a shame that when these people give a riot)
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To: mad_as_he$$
I have to confess: I'm guilty of scanning the articles especially if they are lengthy. Now it is your turn!
46 posted on 07/20/2013 1:05:02 PM PDT by AEMILIUS PAULUS (It is a shame that when these people give a riot)
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To: NormsRevenge

Remember how a few years ago the French built a bridge with the longest span in the world (or some such record) in 18 months? How long has this construction been going on?


47 posted on 07/20/2013 1:07:07 PM PDT by Revolting cat! (Bad things are wrong! Ice cream is delicious!)
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To: MeshugeMikey
is there any wonder that there’d be a Good Herb Island in San Francisco Bay?

Originally, San Francisco was named Yerba Buena, formally named in 1835 (by an Englishman) after the Yerba Buena pueblo founded in 1776 by the Spanish. And it does mean "good herb", at least that was the intended meaning by the founders. I toured the insides of what remains of the pueblo in the early 1960's, and saw the graves going back to the early days after 1776. My history teacher then, said the pueblo was formally created on July 4th, 1776 - same day as some other event going on elsewhere.

48 posted on 07/20/2013 1:12:18 PM PDT by roadcat
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To: roadcat

San Fran used to be called something that roughly translates as Good Weed!!!!

How prescient.

The good Saint, were he able to make an appearance today, would tell those guys off but good. He’d surely say the wolves he tamed were more civilized than they. Then he’d preach the gospel... and probably get tossed out on his ear for it.


49 posted on 07/20/2013 1:14:25 PM PDT by HiTech RedNeck (Whatever promise that God has made, in Jesus it is yes. See my page.)
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To: NormsRevenge

I like the pontoon bridges like they have in Seattle. They do the job a lot less expensively. So the unions (obviously) exert insane pressure via their Democrat stooges to do it the most expanse way even if done with made_in_China_steel


50 posted on 07/20/2013 1:17:35 PM PDT by dennisw (The first principle is to find out who you are then you can achieve anything -- Buddhist monk)
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