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soaring-arrow20 karma

Did you abandon the machine in a side tunnel or dismantle and remove it?

What was the depth and length of the tunnel? Were there any trades behind you that were required to support the tunnel or it self supporting?

--- secondary question, what was the worst soil you've had to bore thru?

--- another secondary question, have you ever had to worry about the bends?

How many months on this particular job?

How did you handle groundwater?

I'm assuming you're a union employee?

soaring-arrow16 karma

This is so cool! I toured the east side access a few years ago and loved it :) Thanks for the response.

Yes, I meant the bends like suba. I've heard that theres that issue with some bridge footing installs, which is why I asked

What is liver sand?

soaring-arrow4 karma

Cool! Thanks!