if they decide to undercut it and install a flowable fill base concrete panel track system, i don't see why any of the tunnel lining just shotcreted will have to be touched. if they stick to conventional track the only way out is up and that would end up removing a portion of the recently installed material in the west end.
BandA wrote: ↑Mon Apr 06, 2020 6:09 pmThe ceiling wont be touched. If you mean any track bed work that was done, possibly, most likely. But we're only talking ~3,000 feet. Yes significantly harder in the tunnel than out, but not the end of the world.newpylong wrote: ↑Mon Apr 06, 2020 6:09 amSo the work just done will have to be done over within a few years. Sometimes that's just the way it is.BandA wrote: ↑Mon Apr 06, 2020 2:36 am Do we know if they did any work to prepare for taller clearance?They didn't. That will require top and/or undercutting the east end and possibly additional undercutting on the west end. None of that was in the scope of the repairs.