On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger was tasked with the challenge of building a tunnel large enough to carry four lanes of motor traffic under the heart of Seattle. The story of how it made the 1.7 mi (2.7 km) journey under the skyscrapers of the port city is not only a tale of a remarkable machine, but also of civil engineering, geology, politics, luck, and proving the old adage that anything that can go wrong, will.
.. Continue Reading Hard grind: The epic journey of the world's biggest tunnel boring machineCategory: Architecture
Tags: Related Articles:
- Bertha breaks through: World's largest boring machine completes tunnel under Seattle
- Gizmag goes inside the world's largest tunnel boring machine
- Troll sought for Seattle-based artist residency
- Highlights from the ICRA 2015 robotics conference in Seattle
- The SimpleNET USB Drive Network Adapter
- Hitachi Video
from New Atlas http://ift.tt/2qjEr2P
No comments:
Post a Comment