While I don't necessarily disagree with your other timelines (I might argue that they're a tad aggressive from what I've seen, but certainly not impossible), this one I do have a problem with.
So yeah......no. A 40+ foot vertical flight of stars is going to take more than just a couple of weeks of framing. And to say nothing for the rest of the new tunnel enclosure for them. This is probably the single most involved part of the remaining part of the project, and there are two of them.
I greatly respect your knowledge Dan, so rather than just guess........
I double checked (just now) with a trade that does these for commercial settings, I was told I was being a bit aggressive, but not much, providing the spec was epoxy Terrazzo, rather than cement (I was told epoxy is now the norm)
For 40ft, I was told best case was as little as 11 working days (based on my proposed six-day work plan, 2 weeks) (per stair) but they said it could be up to 20 working days. They could do all the forming in 5 days flat, worst case.
Most of the time was curing time.
But they noted that cement Terrazzo would take much longer to cure.
They noted that had completed a job at the lower end of the time range in the last year. * not for the TTC or Mx
I think we may be differing a bit in how many things can be done in parallel if you have enough crew on site. My assumption is 72 working hours per week (minus break times)
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Needless to say, I agree with what you're saying about how the TTC is funded for cap-x and that no one in the pubic sector is writing tenders to impose the kind of work schedule and expectations I would (but they should).
I've seen it done in private contracts with escalator replacements running at more than double the speed the TTC achieves, because client wants the finished product back ASAP. Its just a different mentality. Partly informed by better funding, but its also a different style of project management.
