Skip navigation
Electronics Industry Search
Advertisement

Epoxy Used to Secure Ceiling Allowed Bolts to Slip

July 10, 2007

Investigators are now saying the Big Dig tunnel collapsed because the epoxy used to secure the ceiling allowed bolts to slip or "creep" over time. 

The Boston Globe is reporting that Bruce Magladry, the director of the board’s Office of Highway Safety, said the epoxy’s ”exceptionally poor creep resistance” should have been fixed when bolt slippage was noticed in 1999 and 2001 before the tunnel opened. ”It was a missed opportunity,” Magladry said.  

On July 26, 2006, the Boston Herald reported it obtained documents revealing that Big Dig officials noted six years ago that epoxy ceiling supports were failing in the same tunnel section where the deadly accident occurred, but allowed the continued use of that “superglue” system to support 3-ton concrete slabs.

Stay tuned for more updates throughout the day.

Posted by Elizabeth Taurasi on July 10, 2007 | Comments (0)
POST A COMMENT
Display Name
captcha

Before submitting this form, please type the characters displayed above. Note the letters are case sensitive:

Advertisement
Advertisement

Design News Partner Zones

Light Matters: The Unsung Heroes of Modern Health Care
First, let's define "no-compromise." In an ideal configuration, this lamp would use a high-brightness LED (HBLED) that is built into a small, integrated package and is able to produce a large quantity of focused light, operate with a high level of reliability and generate no audible noise. Is this difficult? Yes, but it is possible.
Read More


Design Engineers' Portal for Sensing and Machine Safety
Whatever industry you're in, or whatever product you manufacture, the right sensors to automate your plant, and to improve your overall efficiency, quality and safety are a must. You'll find Banner Engineering to be an amazing resource of products, training and people with expertise.


Test & Measurement World Machine Vision & Inspection Report
Topics include machine-vision software, Power over Camera Link, thermal imaging and frame grabbers. Read More

Design News Partner Zone Directory »

Please visit these other Reed Business sites