ION - Waterloo Region's Light Rail Transit

[KevinL]

They're not done - it's still ongoing. It was like 2+ months of work at R&T. The first 5 platforms they poured will have this done - they caught it on platform 6.

Back home you are not supposed to pour concrete until an independent architect/engineer comes and gives it a once over look. This is because chipping away concrete and pouring again is so expensive and time consuming. They check rebar width, separation of cross ties, dimension of columns, and so on.

I don't think anything was wrong structurally, and that's why that went ahead - it's a question of electrical grounding, which the usual engineers may not have realized at first.