Big Dig Tunnel Ceiling Failure
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Safety Board Determines Cause of Boston's Big Dig Tunnel
10/07/2007· Safety Board Determines Cause of Boston's Big Dig Tunnel Ceiling Collapse Last Year Home > NEWS Contributing to the accident was the failure of Powers to determine that the anchor displacement that was found in the high-occupancy vehicle tunnel in 1999 was a result of anchor creep due to the use of the company's Fast Set epoxy, which was known by the company to have poor long
Big Dig Wikipedia
The Central Artery/Tunnel Project (CA/T), commonly known as the Big Dig, was a megaproject in Boston that rerouted the Central Artery of Interstate 93 (I-93), the chief highway through the heart of the city, into the 1.5-mile (2.4 km) Thomas P. O'Neill Jr. Tunnel.
Collapse of Big Dig Ceiling in Boston Is Tied to Glue
11/07/2007· An article yesterday about a federal report on the collapse of a tunnel ceiling in Boston’s Big Dig project misstated the role of Bechtel/Parsons Brinkerhoff in choosing the epoxy that failed to
Big Dig Ethics of Failure
The fateful day July 10, 2006 APEGM Ethics and the Big Dig 2/7/2009 5 yEastbound car on the I 90 extension heading to Logan Airport is hit by a falling concrete ceiling panel yDriver, Angel Del Valle, escapes with scrapes and bruises ySadly, his passenger and spouse, Millena del Valle, a 38 year old mother of three is crushed under the concrete
Fatal Big Dig failure: ceiling anchors investigated
The ceiling panel collapse is the latest catastrophe to hit the Big Dig. Following completion in December 2004 a section of tunnel sprung a major leak (NCE 6 January 2005) and the project ran massively over budget and over schedule costs soared from £3.6bn to £10bn.
Boston's Big Dig: Materials Failure Led to Tunnel Collapse
UPDATE: Congress to Approve National Tunnel Inspection Program in Wake of Big Dig Ceiling Tunnel Collapse The U.S. House of Representatives is set to pass a national highway tunnel inspection program to try to prevent tragedies like Boston’s Big Dig Tunnel Collapse. Full Story Big Dig Epoxy Provider Pleads Not Guilty to Involuntary Manslaughter
Big Dig Ceiling Collapse Special Reports Boston Globe
The Big Dig tunnel ceiling that collapsed in July was designed with a smaller margin of safety than other tunnel ceilings around the country, leaving nothing to prevent heavy concrete slabs from
Why Did It Fail? Foundation
CAEE$Annual$Alumni$Ethics$Seminar Ausn,’ Texas What is the Big Dig? • Original project estimate $2.8 billion • Final cost $14.8 billion
Public demand for Big Dig accountability TunnelTalk
Big Dig indictment December 2007 The supplier of the epoxy I bolt fixing compound blamed for the fatal Big Dig Tunnel ceiling collapse has been charged with one count of involuntary manslaughter. Action against Powers Fasteners Inc is the first criminal indictment following the July 2006 accident.
Dan McNichol Big Dig Ceiling Problems, Part I YouTube
24/03/2011· The Big Dig Light Fixture Failure discussed by Dan McNichol, author of The Big Dig.
Big Dig ceiling collapse — Wikipedia Republished // WIKI 2
Big Dig ceiling collapse. From Wikipedia, the free encyclopedia. Boston traffic crawls over a closed Ted Williams Tunnel entrance in Boston during rush hour on July 11, 2006, a day after the collapse.
'Epoxy Creep' Main Factor in Big Dig Ceiling Panel Collapse
11/07/2007· Visit our Big Dig special report page for full coverage and photos of the tunnel collapse. The biggest factor in the collapse of Boston's Big Dig ceiling panel which killed a woman a year ago was "epoxy creep." While National Transportation Safety Board members, in a hearing yesterday, said the
Fatal Big Dig Ceiling Failure Blamed on ‘Epoxy Creep’
11/07/2007· Federal investigators said Tuesday that “epoxy creep” was a major factor in the Big Dig accident one year ago that killed a Boston woman when concrete tunnel ceiling panels fell and crushed
Big Dig Problems Tunnel Collapse Leaks Cost
The Big Dig project in Boston has been rife with problems since it began. The Boston Globe and Boston cover the cost overruns, tunnel leaks, and deadly ceiling collapse resulting from this project.
The Central Artery / Third Harbor Tunnel Project (‘The Big
The Big Dig or the Central Artery/Tunnel Project (CA/T) combined two large projects into one: the depression of Boston‟s Central Artery (Interstate 93) in Massachusetts, and the construction of a third tunnel under the Boston Harbor to link traffic to the Logan Airport.
Lessons of Boston’s Big Dig City Architecture Articles
Later, when fewer people viewed the Dig whimsically, it was the setting of a 2002 murder-mystery novel. And last year, after falling concrete panels in a Big Dig tunnel that had been open for three years killed a 38-year-old car passenger, the project became a reminder that infrastructure failure can exact a
10 years later, did the Big Dig deliver? The Boston Globe
If the Big Dig were to be built today, it would benefit from the new tunnel-boring technology currently deployed in the Swiss Alps for the 35-mile-long Gotthard Base Tunnel, the world's longest
Big Dig Boston ceiling collapse Structural engineering
09/08/2007· Contractors apparently used the wrong adhesive to install at least some of the bolts in a Big Dig tunnel ceiling that partially collapsed last summer, project records show, prompting criminal investigators to focus on whether the mix-up was a significant factor in the accident that killed a
Ceiling Collapse in the Interstate 90 Connector Tunnel
Interstate 90 connector tunnel in Boston, Massachusetts, en route to Logan International Airport. As the car approached the end of the Interstate 90 connector tunnel, a section of the tunnel’s suspended concrete ceiling became detached from the tunnel roof and fell onto the vehicle.
Settlement Reached In Big Dig Death Suit CBS News
30/09/2008· Settlement Reached In Big Dig Death Suit September 30, 2008 / 10:29 PM / AP The family of a woman who was crushed to death when a Big Dig tunnel ceiling collapsed has settled a wrongful death
Big Dig Tunnel Ceiling Collapse CTLGroup
The suspended ceiling panel weighed approximately 26 tons, had been in place since the year 2000 and was attached to the tunnel using adhesive anchors. The adhesive anchors were identified early on as the source of the failure. CTLGroup’s challenge was to determine why the adhesive anchors failed by investigating whether there was an issue
Accident in Boston’s Big Dig Kills Woman in Car The New
12/07/2006· BOSTON, July 11 — Four concrete slabs, each weighing at least three tons, fell from the ceiling of a Big Dig tunnel here on Monday night, crushing a woman to
UNE Volume 2 Issue 5 Tunnel of Terror NASA
01/06/2008· Project, known colloquially as the “Big Dig.” The D Street portal is at the end of the I-90 connector tunnel, opposite to the entrance to the Ted Williams Tunnel, which runs under the Boston Harbor to Logan Interna-tional Airport. While the tunnel itself was completed in 1996, suspended ceiling panels were installed in 1999 as
Creeping Disaster: The Big Dig Tunnel Tragedy One
Creeping Disaster: The Big Dig Tunnel Tragedy One Year Later Just over a year ago, a woman died in the collapse of a part of the ceiling over a Boston highway tunnel that forms part of the so-called Big Dig. Less than a week after the collapse, experts were talking about how the epoxy used to hold up the ceiling tiles could fail. In the year that has passed since then, the National
Fatal Big Dig failure: ceiling anchors investigated
Fatal Big Dig failure: ceiling anchors investigated 20 JULY, 2006 BY ANDREW MYLIUS ACCIDENT INVESTIGATORS were this week scrutinising the anchors suspending ceiling panels from the roof of Boston's troubled Big Dig tunnels after one panel fell last week, killing a woman. The 3t reinforced concrete panel fell from the roof of the east bound tunnel of the Interstate 90 highway, which passes
Fatal Big Dig failure: ceiling anchors investigated
The United States National Transportation Safety Board (NTSB) said that it was 'conducting detailed visual examinations and documentation of the remaining
"Big Dig" Ceiling Collapse in Fort Point Channel Tunnel
Big Dig ceiling collapse. The Big Dig ceiling collapse occurred on July 10, 2006, when a concrete ceiling panel and debris weighing 26 short tons (24,000 kg) and measuring 20 by 40 feet (6.1 by 12.2 m) fell in Boston's Fort Point Channel Tunnel (which connects to the Ted Williams Tunnel).
Tunnel ceiling collapse kills in Japan
The ceiling collapse situation in Japan is similar to the fall of transverse ceiling panels in a section of the Big Dig highway tunnels in Boston, Massachusetts, in July 2006. On that occasion a passenger in a moving car was killed. An official report cited deficiencies in the anchor bolts and epoxy used to hold 4,600lb suspended ceiling panels in the cut-and-cover tunnel. The design of the
NTSB report on ceiling collapse spreads the blame
operator of the Big Dig tunnel sys-tem, they had a moral responsibility to inspect the Big Dig’s tunnel ceil-ings. As the NTSB report stated, “No tunnel inspections were performed to determine the physical and func-tional condition of the ceiling system from the time the I-90 east bound connector tunnel
Boston's Big Dig Tunnel Ceiling Collapse: Whose Fault?
The National Transportation Safety Board determined on July 11 that the probable cause of the ceiling collapse in the D Street portal of Interstate 90 connector tunnel in Boston, Massachusetts, was inappropriate use of an epoxy anchor adhesive. Over time, the epoxy deformed and fractured until several ceiling support anchors pulled free and allowed a portion of the ceiling to collapse.
Interstate 90 Connector Tunnel ceiling collapse
the failure of ceiling panels in the Interstate 90 (I-90) Connector Tunnel in Boston, Massachusetts, in 2006, and a number of the key fi ndings from this failure are discussed here1. The I-90 Connecter Tunnel was constructed as part of the CA/T project in Boston, also known as the “Big Dig”. The project was regarded as one of the most
"The Big Dig" unglued Roads & Bridges
As the owner and operator of the Big Dig tunnel system, they had a moral responsibility to inspect the Big Dig’s tunnel ceilings. As the NTSB report stated, “No tunnel inspections were performed to determine the physical and functional condition of the ceiling system from the time the I-90 east bound connector tunnel was opened to traffic on January 18, 2003 until the day of the fatal
Light Fixture Falls at “Big Dig” Tunnels : Galvanic
02/04/2011· Objects are falling once again in the Big Dig tunnels. Boston Herald reported that a 110 pound light fixture fell in the travel lanes near the entrance of the I-93 northbound tunnel on February 8, 2011 but that it took several weeks before the event was made public by officials.
Bad Bolt Troubles for Boston's Big Dig ThomasNet
A new system to support concrete ceiling panels in the Big Dig's I-90 connector tunnel is working, Gov. Romney said on July 18. Crews tested the system designed to shore up the failing epoxy bolt anchors of the tunnel ceiling and were to begin installing the system immediately.
NTSB spreads blame for Big Dig tunnel ceiling collapse
WASHINGTON, D.C.—The National Transportation Safety Board (NTSB) reported in July that the probable cause of the ceiling collapse in the D Street portal of the Interstate 90 connector tunnel in Boston, Mass., part of the Big Dig project, was inappropriate use of an epoxy anchor adhesive.
Investigations Continue into Big Dig Accident Civil
More trouble spots were found in the Big Dig’s I-90 connector tunnel following a fatal accident on July 10 in which a motorist was killed when several heavy ceiling tiles (weighing approximately 3 tons each) crushed the victim’s car. The Massachusetts Turnpike Authority (MTA) has ordered an examination of every road and tunnel in its highway system, and the federal government is looking
Big Dig collapse: mistake or crime? The Boston Globe
12/07/2007· TO THE AVERAGE outraged citizen, the Big Dig's $15 billion price tag is a crime unto itself. So, of course, the fatal Big Dig tunnel collapse is criminal. But when it comes to weighing a potential case, Attorney General Martha Coakley must make
$458M Big Dig Settlement Reached; Criminal Charges
The main management consultant and contractor on Boston’s $15 billion Central Artery/Tunnel Project (Big Dig) has agreed to pay more than $407 million to resolve civil and criminal liabilities
Big Dig, Big Problems
01/10/2009· Yesterday's cave in of Boston's Big Dig is far from the first problem to plague the massive public works project (but it is, by far, the most tragic). The most expensive highway project in US histo...