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CalTrans fired inspectors on Bay Bridge who found faulty Chinese welds.

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http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/01/25/BAKR15ESKG.DTL&feed=rss.matierandross

Construction of the tower portion of the Bay Bridge's new eastern span is running months behind schedule, amid questions over whether key portions being made at a Chinese steel plant are defective.

Inspectors hired by Caltrans to monitor the fabrication of steel girders that will support the tower's roadway reported finding cracked welds last year, Caltrans records show.

The discovery has raised the question whether Bay Area taxpayers are getting a substandard product that could wear out prematurely and require costly repairs in a decade or two.

Caltrans and others in charge of the bridge construction say the welds are safe and that fixes have been made - but also say the inspectors interpreted the welding standards too rigidly.

Meanwhile, the inspection outfit that sounded the alarm has since been replaced.

"I can understand people being worked up about safety and quality with the welds," said Steve Heminger, executive director of the Metropolitan Transportation Commission and part of a three-member Toll Bridge Program Oversight Committee overseeing the $6.3 billion bridge construction. "But we're concerned about being on schedule because we are racing against the next earthquake."

Heminger, of course, is referring to worries about the safety of the existing eastern span, part of which collapsed during the 1989 Loma Prieta quake.

State transportation officials say that, as a result of cushion time built into the construction process, they still expect to meet their targeted 2013 date for opening the new eastern span. But at the least, the months of delays caused by questions over the welds are expected to add tens of millions of dollars to the project's price tag.

The welding holdup is reminiscent of the flap four years ago when union whistle-blowers said faulty welds had gone unrepaired inside pilings for the skyway portion of the span. A resulting federal investigation came up empty - but not before it halted bridge work for weeks and cost taxpayers millions.

This time, the welds in question are contained in 900 bridge panels that are being assembled into football field-size deck sections that will stretch across the 1,800-foot-long tower portion. The sections were supposed to have begun arriving from China in October, but now they aren't expected to get here until at least April.

And "that's the best we can do," said Andrew Fremier of the Metropolitan Transportation Commission. "It's more likely this summer."

The panels are being made by the Zhenhua Port Machinery Co. of Shanghai, which is fabricating most of the steel for the $1.4 billion signature tower on behalf of the span's joint-venture builder, American Bridge-Fluor Enterprises. ZPMC, as the company is commonly known, is the same firm that built the mammoth cranes that tower over the Port of Oakland - indeed, it builds 80 percent of the container cranes used around the world.

"This is not a fly-by-night operation, and they couldn't command that kind of market share if they were putting out a shoddy product," Heminger said.

Just to make sure everything was running smoothly, American Bridge put 50 employees on the ground in Shanghai. Caltrans sent another 45 staffers and consulting inspectors to monitor the fabrication process.

Soon after ZPMC started production in late 2007, however, the inspectors hired by Caltrans began finding problems - specifically, an unacceptably large number of welding flaws in the new panels - according to internal agency memos and e-mails turned over to The Chronicle under a Public Records Act request.

In a memo dated March 6, 2008, supervisor Patrick Lowrey of the inspection firm MacTec Engineering and Consulting reported that as many as 65 percent of the more than 30 welded panel sections his office examined - either visually or using ultrasonic testing - failed to meet specifications.

The memos also reveal that the inspectors questioned ZPMC's ability to handle the complex bridge construction job - and that they were frustrated by Caltrans officials' demands that the project proceed despite the allegedly substandard welds.

On March 27, 2008, for example, Lowrey complained to his boss at MacTec, Jim Merrill, that Caltrans had shifted his team's primary inspection role in China "to one of collecting and analyzing data to justify decisions to move the project forward despite not being in compliance."

Lowrey said ZPMC had failed to provide most of the quality control documentation required under its contract with American Bridge and Caltrans, and had failed to produce a single test weld that conformed to the contract specifications.

Four days later, Merrill wrote to Caltrans principal engineer Peter Siegenthaler to complain about the "random weld quality" on more than 100 panels and recommended that the entire production be halted until ZPMC improved its welding process.

Caltrans officials, working with ZPMC and MacTec inspectors, say they eventually worked out a program to tag and repair all the bad welds. But e-mails from inspectors show problems persisted.

On May 23, 2008, MacTec inspector Andy Velasco e-mailed his bosses to say that cracked welds on one deck panel had been replaced, but that the fixes hadn't been tested to make sure they were done right.

On another panel that had been similarly repaired, Velasco wrote, his team did a spot check and found cracks in more than a dozen new welds.

ZPMC officials insisted that the redone welds did not need to be rigorously inspected, Velasco wrote.

Last month, Caltrans dropped MacTec from its three-year, $63 million inspection contract and replaced it with another outfit, Caltrop Corp. Some MacTec officials suspect they were pushed off the job for complaining about the welds, something Caltrans strongly denies.

Caltrans Director Will Kempton said MacTec lost the job when its contract expired, and the state's bridge oversight panel that he serves on recommended putting out the work to competitive bid. Although MacTec was doing a good job, he said, Caltrop came in with a stronger presentation.

Whatever the case, Caltrans says as many as 100 bridge panels are now coming off the ZPMC assembly line each month, and it hopes they'll start arriving in the Bay Area come spring.

After consulting with a structural steel expert from Lehigh University in Pennsylvania, Caltrans officials concluded the decks will be safe, and that the earlier problems were the result of strict weld standards that essentially allowed for no cracks. In other words, a few minor cracks are OK.

"That is the role of the inspectors, to identify issues and problems," Kempton said. "When these issues are raised, we have to deal with them, and that's what we did."

And while "yes, we did modify the acceptance criteria" for the welded bridge sections, Kempton said, "we developed what we think are acceptable standards."


As for how much the delays have added to the bridge's overall price tag? Ultimately, Kempton said, that could depend on just how much time ZPMC can shave off the job by speeding up the remaining fabrication.

"I'm not going to speculate on the costs ... in the paper," Kempton said. "That will be negotiations between the contractor and (us).

"The bottom line is, we will have a safe bridge."

I hate to say it, but I doubt there would have been this trouble if the steel was sourced from the US.
 
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I've tried chinese steel. I won't buy it anymore. Very poor quality, compared to US and Canadian.
 
I wonder where the Obama plan of "Put AMERICANS back to work" fits in all this? :dunno
 
Well, he's only been in office for 6 days, give him a chance.

No shit..

I'm amazed how people seem to think that on Jan 20th, he should have just waved a magic wand and fixed everything in one fell swoop.

I'm also amazed how it is his fault that people picked up contracts for chinese steel years before he was even running for office.
 
And to think, when they're done, they're just going to blow up all the fine old US steel in the cantilever span and drop it into the Bay...
 
It seems like quite the waste, and I'm sure the tangle of the old bridge will cause some problems for ship traffic and anchoring at some point.
 
I don't think its possible to simply blow up the old bridge and drop it into the water. The old span has lead paint on it in some portions, and it would be a hazard to maritime traffic.
 
It seems like quite the waste, and I'm sure the tangle of the old bridge will cause some problems for ship traffic and anchoring at some point.

Yes it does, and...

I don't think its possible to simply blow up the old bridge and drop it into the water. The old span has lead paint on it in some portions, and it would be a hazard to maritime traffic.

The shipping channels are underneath the western span, not eastern, cantilever span.
 
Although, allegedly they are going to dismantle and recycle it now. Interesting. Few years ago they were talking about just dropping it into the bay.
 
Bingo!!We have a winner:party

This has been a constant problem on large construction jobs not just the Bay Bridge.

i dunno about the quality, but at least you wouldn't have to pay a premium to send nearly 100 people (some of them caltrans!!! holding up shovels in a foreign country great) to live abroad for the years it's taking to finish fabrication.
 
For some reason I knew some people would think my post was an Obama bash. It wasn't. It was a legitimate questions. Let me rephrase....
"I wonder how Obama will handle all this 'off shoring' when he puts all this money out to build new roads and bridges. How will he handle these contracts and will he insist that they stay on shore".

It has nothing to do with existing contracts that went out to bid prior to his new plan, or how long he was in office.

FFS peeps...pull the sticks out of your ass...or in Valgars case...WHATEVER the fuck he keeps up there :laughing
 
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