Bertha Status
Bertha Status
(OP)
Well, the machine broke through the shotcreteed wall of the cutter head pit at 11:20 AM today and with a large vertical jolt at that. Felt like a small earthquake just a couple of blocks away. Now they can remove and repair the cutter head. The machine moved about 20 feet over the last three days to finally reach the pit.
I propose to rename Bertha, "Thumper".
I propose to rename Bertha, "Thumper".
Mike McCann, PE, SE (WA)






RE: Bertha Status
RE: Bertha Status
was in area a couple of moths ago