I know this has been noted before many times and was part of the modelling for demand - there are many points along this line where you can see a lot of transfer volume. Starting in the current Weston to Kennedy you have the following either existing of future connections:
- GO at Weston
- GO at...
It's not unsupported rock with loose boulders - this is a treated cut rock face reviewed by geotechnical engineers and the safety team. There are no boulders. The whole site is cut into rock and precautions are taken prior to allowing workers into the space. Maybe the photo makes it look...
Yeah - Toronto and GTA is pretty much all this fractured shale (which is prone to swelling) - further north you go, will see more limestone (i think it's mainly limestone) and harder rock and they are much closer to the surface (or above) - good old Canadian shield territory
Once the roof of the station box is complete (which will still be below these utilities, they start backfilling to the point where the sewers are sitting on new grade. They will either back fill around and move on, or - hopefully - replace the old infrastructure with new and then continue...
Building of the core in this fashion should also be a clear tell that its a structural steel frame - otherwise the entire slab would be formed at once including the remaining columns. The building has the centre core and then perimeter columns as the only vertical support system. All floors will...
Not that I can ever notice - problem is you are in full construction gear and I tend to sweat a lot under my hard hat. Why would you mention that it would be cooler down there?