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World's biggest tunnel machine Bertha emerges from - Autoblog

Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.

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Elon Musk decides what to call Boring Company's machine

Elon Musk has taken to Twitter to muse ideas for names for the impressive boring machine, which is digging a tunnel under LA to dodge the city's infamous traffic.

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CivilDigital.com - Civil Engineering Site

Welcome to CivilDigital.com – The Civil Engineering Website. India’s largest educational resources gallery exclusively for Civil Engineers. Our Vision. To emerge as a World class Digital Library, Elucidating the Civil engineering subject for students at g

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Big Bertha -- world's largest tunnel boring machine

Dec 25, 2013 · Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blacksto...

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Bertha (tunnel boring machine)

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.

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FACT SHEET Tunnelling for rail: What it really costs

What it really costs The backlog of much-needed rail projects in NSW stretches back decades, along with numerous broken rail infrastructure …

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Tunnel

A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rath

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tunnelling contract news for the world's tunnel engineers

tunnelbuilder.com is the leading marketing resource for the world's tunnelling industry providing the latest project news on the world's tunnels

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Tunnel Boring Machine for Delaware Aqueduct Repair

FOR IMMEDIATE RELEASE 17-16 March 28, 2017 CONTACT: [email protected]; (845) 334-7868 Tunnel Boring Machine for Delaware Aqueduct Repair to be Named for Trailblazing Engineer

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Big Bertha, world’s largest tunnel-boring machine, arrives

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.

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BUILDING BIG: Glossary - PBS

Glossary. Abutment - the outermost end supports on a bridge, which carry the load from the deck. Aluminum - a lightweight chemical element (Al); the most abundant metallic element in the Earth's crust

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Elon Musk to bid to build a Hyperloop in Chicago - Mail Online

The project is designed to create a new 'express' option that would take travelers between downtown and O'Hare in '20 minutes or less,' cutting travel times in half.

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Watch Bertha, the world’s largest tunnel boring machine

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.

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Big Bertha, world's largest tunnel-boring machine, arrives in

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.

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Main Beam | The Robbins Company

14.4 M diameter Main Beam TBM. The Niagara Tunnel Project: World's Largest Hard Rock TBM. more

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Tunnel Boring Machine for Delaware Aqueduct Repair to

FOR IMMEDIATE RELEASE 17-16 March 28, 2017 CONTACT: [email protected]; (845) 334-7868 Tunnel Boring Machine for Delaware Aqueduct Repair to be Named for Trailblazing Engineer

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World’s largest tunnel-boring machine finally breaks through

SEATTLE — The world’s largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled...

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The World's Largest Tunnel-Boring Machine | Popular Science

After a 2001 earthquake severely damaged the double-decker section of Seattle’s Route 99 highway, state and city officials decided to move the main thoroughfare underground. In July, they unleashed Bertha, the world’s largest-diameter tunnel-boring machin

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The World's Largest Tunnel-Boring Machine Must Be

The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, leaving the city's planned waterfront renaissance hanging in the balance.

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Seattle tunnel, among world's biggest, takes step

Apr 04, 2017 · Workers look on as the machine head of Bertha, the world's largest tunnel-boring machine, is lifted from an access pit for repairs in Seattle, Washington March 30, 2015. Bertha stopped working in December 2013 after digging just 10 percent

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