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ION - Waterloo Region's Light Rail Transit
Concrete or Asphalt, some kind of height or side clearance would have to give way in the area directly under the trains. I didn't see how they did it for the Weber one, though I am fairly certain they only opened it after it was done (railings aside).
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(10 hours ago)Canard Wrote: Given this reply about the timeline for completion of a ~3m section, I'd beg to differ!

In all seriousness - they need to properly fill the earth, grade it, flaten it, build the forms, pour the concrete, let it set, remove the forms, backfill the edges and then do whatever other treatment in the area is required.

That's the bare minimum - and all has to be carried out within the confines of the retaining walls on both sides (embankment/bridge sides, and the retaining wall separating the MUT from the road).

Is this significantly different from any other section of sidewalk? Once a sidewalk paving job begins, it’s typically only a few days until the concrete is set. The parts under the bridge probably don’t even need forms since they’ll probably just pave the entire width of the space.
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It is significantly different - there's an overhead restriction, and a width restriction (giant concrete wall, and a delicate retaining wall) on both sides to contend with. And they're not very far along at all. It's lumpy dirt.

My only point is it is a lot of work to do in a short period of time - and traditionally when other places are about this stage, it's many weeks (or months) until the sidewalks are complete.

So! It'll be neat to see them pull it off.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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They were starting to grade the path by the Pharmacy building when I walked past today, I'm guessing then, it'll be the west side trail which gets built first, will be interesting to see how it is completed at the north end, since there doesn't seem to be much space there.

I cannot imagine that this will take them that long, all the utilities are done, it just needs to be filled, formed, and poured. It's a lot of work, but I think the biggest slowdowns occur when scheduling and working with other teams, or when unexpected issues arise. When it's just one group, they can just motor along, and since this is all new, there should be no unexpected issues.

Will enjoy walking past this week to see the progress.
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(8 hours ago)Canard Wrote: My only point is it is a lot of work to do in a short period of time - and traditionally when other places are about this stage, it's many weeks (or months) until the sidewalks are complete.

Elapsed time is indeed typically quite long.  But the amount of work is far shorter.  So I think it's feasible to get it done this week, but it'll require focus!
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