Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
That picture way above shows how the Caisson shoring works when they start digging. It looks like they excavate to show the rounded pour and then I believe the excavator scoop will simply carve the mortar mix to even out the shoring. I assume the concrete mix is probably a weaker strength to allow this.
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The geology seen in the excavation is kinda cool. Correct me if I am wrong, but it seems as if downtown Calgary is on a giant bed of Glacial till with no sign of bedrock at all.
Yeah I think for most of the city, bedrock is a couple hundred meters down.
No problem guys, it's my pleasure. I'll also be doing regular updates of Telus Sky once it starts.
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Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
Calgary is one of the most seismically stable regions on the continent. Has there ever been an earthquake over 2.5 in this city?
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Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
We just get frost quakes, so nothing too crazy hopefully in the ground under our downtown. I think the bedrock is still deeper than the excavations of most pits.
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Maybe I was thinking of Regina? But I thought we had a discussion that Calgary's downtown bedrock was over 100 meters down? It would make sense that it is close to the surface though, as the bluffs and the Paskapoo Escarpment have exposed bedrock so close to downtown.
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Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
Why the need for raft slabs if bedrock is that close? Or, is the bedrock too soft to anchor towers?
Bedrock is close as 25 feet down. Downtown Calgary is mostly gravel as it was a glacial lake bed. The bigger issue is horizontal sheer as the bedrock is unstable.
Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
It wasn't the entire site that was contaminated, it was just the basement/foundations of an old long-demolished hotel in the Northwestern corner of the site that required remediation.
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Mohkínstsis — 1.6 million people at the Foothills of the Rocky Mountains, 400 high-rises, a 300-metre SE to NW climb, over 1000 kilometres of pathways, with 20% of the urban area as parkland.
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