World's Largest Tunneling Machine, "Bertha" Starts Digging SR 99 In Seattle
World's largest tunneling machine, "Bertha" has recently had the first day at job that will last about 14 months. Finally, after a lot of testing Bertha has began doing what she's been built to do. Unfortunately, there were not many people or the media to witness Bertha's first day at job. Bertha's first assignment is to do a 2-mile journey beneath downtown. She'll operate under the crew from Washington State Department Of Transportation, pushing forward slowly at about 6 ft per day. Once she's beneath downtown, it will increase the speed to about 35 ft per day.
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Anil Jain
What can be the technical reason that it's starting from 6ft and will up to 35 ft.Kaustubh KatdareShe'll operate under the crew from Washington State Department Of Transportation, pushing forward slowly at about 6 ft per day. Once she's beneath downtown, it will increase the speed to about 35 ft per day.
Is there any technical reason or its mere precaution as the machine being used for the first time.
meanwhile, any clue what is the best it can do in a day?
-CB -
Ashraf HZIf I read correctly from their site, the slow start is for the machine to "train" and for engineers to check its performance. Once its all good, they will ramp up the speed.
#-Link-Snipped-#
Bertha
π
Age: <1
Height: 57.5 feet
Weight: 7,000 tons
Length: 326 feet
Occupation: Tunneling specialist
Likes: Dirt, small boulders, perfectly formed concrete rings
Dislikes: Sunlight
Role models: #-Link-Snipped-#, Marc Isambard Brunel, whoever invented the shovel
Twitter:#-Link-Snipped-# -
Kaustubh KatdareI think that's right. Since this machine is operating for the first time, they'll have to be very careful in the initial stages. If something goes wrong, it will go wrong on a massive scale.
But 6ft/day or even 35ft/day is still way too slow IMHO. We need something like 1 km/day! FTW! CEans, let's make it happen one day π -
Ashraf HZ
lots of TNT πKaustubh KatdareBut 6ft/day or even 35ft/day is still way too slow IMHO. We need something like 1 km/day! FTW! CEans, let's make it happen one day π -
Kaustubh Katdare
Or all of us digging it like real men...βashlots of TNT π -
Ashraf HZ
Yes.. could work with 146k CEans.. πKaustubh KatdareOr all of us digging it like real men...β -
Kaustubh Katdare
I'd be supervising all of ya π.ashYes.. could work with 146k CEans.. π
PS: I think we're I am getting all spammy here. -
Jeffrey Arulraj
Well the upper layers are not hard rock in my opinion and the downtown area the stress on the lower soil levels are comparatively lesser than that in proper towncrazyboyWhat can be the technical reason that it's starting from 6ft and will up to 35 ft.
Is there any technical reason or its mere precaution as the machine being used for the first time.
meanwhile, any clue what is the best it can do in a day?
-CB
So once downtown is reached it is let the engines blow in full glory
PS: Is not 2 miles deep stand for rocky layer I am sure the challenge lies in diverse loading on the upper levels -
zaveriashIf I read correctly from their site, the slow start is for the machine to "train" and for engineers to check its performance. Once its all good, they will ramp up the speed.
#-Link-Snipped-#
π
what is berths's nationality ? German ?
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