I'm going to diverge from the group think for a moment and state that I would love for the developer to stick with the fraternal twin scheme.

I like the fraternal twin theme, but i just want it to be about 100' taller.


Looking at the skyline from Grant Park:

I think that the Museum park towers, and the grant park towers on the left would provide a nice profile.

Combined with Essex and 1000M on the right.

both sides then kind of would be starting to bring the skyline up to a point.
IMO they should burn the Jewel at Wabash/Roosevelt to the ground and put up a 1500' + tower there.

Would make for an awesome 4th "peak" in the skyline.

Hard to do. Zoning in that area requires that the ceiling in the highest occupied unit not exceed 900 feet. You can have mechanical and utility spaces above that, but not occupied spaces. We had planned 2-3 levels of mechanical above the last residential floor, but nothing that would get us to 1000'.

Sorry I didn't see that answer any of my questions?

I agree, I very much like the original concept. Besides, how often do you see two very tall buildings that are very similar, but not exact twins? It's kind of a different concept. I know there's certainly nothing like it in Chicago. Hell, there are virtually no twins in Chicago except for CME and Marina City. It's almost an Illinois Center like scheme, just on steroids.

I agree as well. They can be our Warner Towers, just much thinner, but still cornering our park.

Guess you'll have to research it yourself then :shrug:

Well I guess that's it, nobody ask anymore questions from the experts here, just go do the research yourself. Why would you even respond to my comment with a link that didn't answer any of the questions I asked in the first place? :haha::haha:

According to the link the tank would likely be made of concrete. The simple fact though is that you're dealing with water and cost. Concrete is cheap whereas constructing a tank with copper or stainless steel is not and water will eventually corrode both of those alternatives. Everything that holds water will, given sufficient time, leak.

Lastly, a tuned mass damper is a mechanical damper which is essentially what was described as an alternative (a mechanism for absorbing shock mechanically).

Thanks. I like the concept that the engineers of Tapei 101 implemented, which takes away the issues with dealing with water and provides a single point of maintenance over time if that damper needs to be checked or repaired.

I can't help but let my mind wander with the slosh damper, like a layer of aluminum creating a barrier with the concrete which is relatively cheap and fairly resistant against corrosion. In time if there's any issue with the aluminum barrier, drain the tank, install a new barrier and refill the tank. Admittedly a single physical damper that wouldn't need attention for a very long time sounds more desirable even if the upfront cost is more.

I think it is indeed more likely that it hasn't changed and the blurb I read had incorrect information/typo. However, there is also some possibility at this point that the developer made a change impacting the unit count and simply forgot to have you directly informed at least as of yet......

Feb 20


The hole is filled with water - sometimes clay laden water - to help keep the sides from caving in before the sleeve is driven down.






Spinning off the soil.

February 21, 2017

What do they do with all that clay? Is it trucked off somewhere? Used for anything?
In the Quad Cities there's an artist who makes knick knacks out of Mississippi River clay (ibloom.com). I'm curious if good clay like that is going anywhere interesting. With all the Chicago construction, that is a lot of clay being mined.

We have a couple new beaches that need to be made to straighten out LSD, seems like a good place to start dumping excess earth.

I have it on good authority that Phase 1 will not have more than 800 units in it, so whatever source had it at 900 was incorrect. When I worked on it, the number was 792 so that is consistent with my last first hand information.

March 8, 2017

Seems there was quite a large pour here over the weekend. Image from http://www.sloopin.com

https://1.bp.blogspot.com/-IPpXCdS39...0/concrete.jpg

It's soil, so the excavation contractor will typically haul it away and sell it to some other project. Clay like this can be used to cap landfills or other environmental remediation, etc. I don't think it compacts very well, so you typically wouldn't use it to backfill around foundations or for roadway grading. But it probably could be used for lakefill projects, golf courses, or other terraforming.

I assume artist-grade clays are probably mined for that purpose and kept free of impurities, not dredged up as spoil from a construction site... although artists are certainly free to get their clay from the bottom of a caisson if they wish... :shrug:

It'd be interesting for an artist to pitch the idea of furnishing a new building with clay artwork crafted out of the clay recovered from that building's caissons.

That's a wrap on the caissons.

03/17/17

https://im1.shutterfly.com/media/47a...D720/ry%3D480/

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Were there air compressors on site to grind rock-socketed caissons? I dont recall seeing any in photos posted here.
Who's the general contractor? It will be great to see some vertical structure rising here soon!

Apparently you don't always need compressors.

McHugh is the GC.

They have permits for the first 12-levels and for the tower crane.

It's sheeting time...

03/20/17
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Rakers
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Awesome. About a month till crane gets installed?

Don't put a timeline on it They'll drive sheeting around the perimeter and the core. Then they've got to excavate the core area, build up the mat..... Just enjoy the process.

An altogether silly thing to tell someone when in fact there very much is a - rather precise - timeline on it....

^^^ Yeah, but do project managers for private projects publish their schedules? And are those fixed in stone? The PM may have a date on his calendar for when the crane gets installed, but we don't have it.

Thanks for pointing out the obvious of what I was eluding to.

03/22/17

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^ How do they get the piling to interlock like that? Is it like that the whole way down?

yes

thanks! I see it is pre-crimped

March 23

3/26/17
 

https://c2.staticflickr.com/4/3794/3...ea0ee7d2_h.jpg

https://c1.staticflickr.com/3/2853/3...055ce16e_h.jpg

03/24/17

https://im1.shutterfly.com/media/47a...D720/ry%3D480/

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Two cores on this one? Two cranes?

One and one as far as i know. They only have a permit for one tower crane.

Great angle. The potential twin building would go West of this one?

Bvic that last pic is very Flashdance

Yes, that's where it'll go.

I'm nerding out on this project.

03/27/17

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Cool. Thanks for all the great photos. For those of us not very intimate with the construction process it's great to be able to study the action this way.

:cheers:

^No, their trailers are sitting right where the foundation would go.

Tower crane base is in place.

wow. you're really making the rounds today.

looking forward to going out of my way to drive past it on my way home now.

thanks.

03/31/17

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03/31/17

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Yay, on skyward. This one's gonna be spectacular.

4/1/2017
 

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04/03/17

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