From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on Tuesday, completing a final push in a years-long effort to create space for a new highway beneath the city.
Feb 12, 2015 · CNN's Thom Patterson explains how engineers plan on getting Bertha, the world's largest tunnel machine, digging again in Seattle.
In July 2013, Bertha began digging the SR 99 tunnel beneath downtown Seattle to replace the city's Alaskan Way Viaduct.
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Bertha, the world's largest tunneling machine, churning through the rock and mud beneath Seattle, has hit a mysterious roadblock—so mysterious, it is only known for now as "the object."
Alan Barnhart knew that it would have been, in his own words, "absolutely catastrophic" if his crews damaged even one part of the world's largest working tunnel-boring machine, a 7,000-ton, 57.5-ft-dia drill nicknamed Bertha, which was designed to bore out the new Alaskan Way Viaduct in Seattle.
Under the city of Seattle, Bertha, the world's largest tunneling machine is at work excavating what will soon become the 1.7-mile long SR99 tunnel.
Mar 11, 2013 · The world's largest diameter tunneling machine has left the port of Osaka in Japan and will arrive in Seattle later this month to begin work on replacement of the Alaskan Way Viaduct, the downtown waterfront eyesore.
May 08, 2013 · SEATTLE - The world's largest tunneling machine, Bertha, is a complex machine. Now, residents around the sound are getting a look at how it works. An animated video created by Bertha's manufacturer, Hitachi Zosen Corp.
Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.
reddit: the front page of the internet. jump to content. my subreddits. edit ... Animation on how Bertha, Worlds Largest Tunneling Machine, works.
Meet Bertha: Bertha is the world's largest tunnel boring machine. She weighs 7,000 tons and, at 17.5 metres tall, is roughly the height of a three storey house.
Bertha, the world's largest tunneling machine, has been stuck under downtown Seattle since it broke in December 2013. Engineers have had to concoct a massive and expensive rescue plan—essentially a whole construction project in itself.
The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, ... What do you do when the world's largest tunneling machine is, ...
The "Big" in Bertha's name isn't there for the catchiness. It's there because it's apt. With a 57-foot diameter and a length of a football field, Big Bertha is the world's largest tunnel-boring machine.
Dec 24, 2013 · Big Bertha -- world's largest tunnel boring machine ... Why a Giant Machine Is Digging a ... Bye-Bye to Bertha, the world's largest tunneling machine ...
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Bertha is Tunneling Seattle's Underground Freeway on wordlessTech Find this Pin and more on world's largest tunnel boring machine by MarketingMan. "Big Bertha:" the biggest Tunnel Boring Machine on Earth.
The World's Largest EPB Shield Tunneling Machine | … The world's largest shield tunneling machine was officially named Bertha on December 20, 2012.
Bertha, the world's largest tunnel boring machine (TBM), started digging under Seattle on Tuesday as it chewed through the north wall of the 80-ft (24.3 m) deep trench where it was assembled after being shipped in pieces from its manufacturer in Japan.
A tunnel boring machine ... This is because tunneling with TBMs is much more efficient and results in ... 2.M-30 EPB Tunnel Boring Machine - the largest built in the ...
Big Bertha, the world's largest tunneling machine, is currently at rest underneath Seattle, yet engineers have devised a way to re-animate the stranded behemoth.
Apr 03, 2017 · The best memes as world's largest tunneling machine Bertha emerges ... SEATTLE — Bertha made it! Bertha, the machine digging a 1.75 mile tunnel under ...