It may end up being a concrete frame for the parking podium though...
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That's only true for office buildings below a certain height/size. Every large (somewhat arbitrary, but I'll use ~30+ stories, ~600,000+ sf) 'Class A' office tower - with only one exception - built this century in downtown Chicago has been composite structure (concrete core with steel frame). And - the lone exception was not a concrete frame - it was a rarer entirely steel structure (steel core + frame) at 131 S. Dearborn. As I recall, the reason a steel core was selected for that construction was that the project heavily re-used the existing deep foundations from the prior demolished structure on the site, and to accommodate, they selected the significantly reduced load of the all steel structure. The price of steel (again as I recall) was fairly low at the time, and that no doubt factored at least partly into the decision as well. I believe that a major reason why you increasingly now see a mix of composite structure and all concrete structure for mid-rise and smaller high-rise office here (still somewhat more composite than concrete) is that the concrete frame plays into the 'lofty'/creative space office aesthetic that has marketplace appeal among office tenants (some more than others). It's not necessarily my thing (I don't dislike it though) per se, but I certainly 'get it'. There are also technical construction/engineering/commodity price factors at work without a doubt - but office space market factors are a clear driver in my view. |
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I hope someone will soon upload a drawing of this building to the Diagrams page. Being the tallest office tower constructed in Chicago since 1990, this building is highly significant.
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^ I like the close-up rendering. I am not so sure the other image's scale is accurate, though it's close. This tower will be roughly 155' taller than WPE. Seems short in the rendering.
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So that's how they plan to do the 'Salesforce' logo, eh?
I guess they aren't going with something more elaborate on the rooftop? |
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In comparison I think this tower looks about 835' to the parapet in the first rendering. It almost looks a bit taller than that but maybe I'm just seeing things. I do think the skinny top and fat body look odd from that angle. The second rendering is really cool though. Quote:
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The second picture shows if the top of the tower is building outward similar to the Transamerica pyramid
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Great set Harry. That last shot really illustrates how much open space the site will still have.
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https://www.chicagoarchitecture.org/...ed-back-again/ shows diagrams and the first render is pretty accurate, and if anything shows WPS a little taller in the render given a tiny bit of perspective effect. |
Oct 19
Chicago | Sales Force Tower by Harry Carmichael, on Flickr Chicago | Sales Force Tower by Harry Carmichael, on Flickr Oct 20 Chicago | Sales Force Tower by Harry Carmichael, on Flickr |
Was out shooting 110 on Saturday with the lifted bridges & passing boats (great success), then walked over to Salesforce.
May be a few days before I get through the edits, but here's a screengrab of what I'm working on. Great height for shooting over the fence right now! https://i.imgur.com/ZIBXiUq.jpg?1 |
^ Very niiice, Nick. OT but I drove past 110 on Saturday evening and it was looking gorgeous. The Riverwalk portion appears to be complete. :cheers:
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Salesforce Tower
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we are lucky to get to watch this during such an obvious market downturn (covid)
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Just wait- six months from now: OC, 320 S Canal, WPS, and 300N Michigan will all have cranes puncturing the skyline
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Lending rates are stupendously low and there's reasons to believe infrastructure stimulus is a real possibility, too. |
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