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I was lurking around it this morning, man that thing is deep! No deeper than the garage it abuts though, so that goes down at least this far. Again makes me wonder if they're going to tear into the wall of the existing garage and expand it out into this void with more underground parking that will tie into the already completed entrance/exit ramp in the middle of the site as a whole.
I saw them pulling old trees and logs out of the clay, looked round and caked in mud like they've probably been down there since they fell ages ago - not cut logs like they're laying down to move the heavy machinery. Those would be some old logs to be buried this deep. |
steady progress...
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Is Chicago’s clay really that much harder or more expensive to dig in than elsewhere?
They build underground parking in reclaimed land in coastal cities. How is that any easier? The city should still start requiring that parking is underground. If that means less development, so be it. Above ground parking destroys neighborhoods. |
If the city was smart, it would require underground parking instead of the horribly corrupt affordable housing contributions. And give a FAR bonus.
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How many parking spots were granted for the east building? And looking at the pictures it would be silly to not connect this to the original garage with that blank wall there. Being the same developers and im sure same parking company. Unless it would cause some massive structural issues.
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Nov 17
 Old Pilings - well preserved in the anaerobic clay  Nov 13 Waiting to be installed - the next set of braces - The square frames are being used to brace the existing garage wall.  Nov 13  Not the chains used in lifting it out of the pit.  Strain gauges - must be strain gauges.   |
Nov 22
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^ Wow that's a hella large hole-underground parking? Great pics (thanks harryc and Happy Thanksgiving!) and a great project along the river.
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Wonder how much pressure that wall is holding back!
....simply amazing, simply Chicago.... |
Why don't they build below grade parking in Chicago??? This looks so easy!
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Nov 28
A bit muddy.  Dec 1     |
engineering on these riverfront projects is just the best to see, nice shots.
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The engineering of this project is truley amazing. Thanks for the pictures harry! I hope we get more with your pup soon. So cute.
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What an impressive dig. Its wonderful they spent the money to bury the parking on this site, its just too important and visible of a place to stick an ugly podium.
I'm surprised to see it go so deep with sheet pilings. Must be possible with those heavy reinforcements, I dont remember the sheet piles being this long when they drove them in. I remember reading that One Chicago Square will have such deep parking they cant even use sheet piles. They are going with the more expensive secant wall on that site. |
So many support beams. I am so confused. Does anyone have a bluprint/diagram of what the the lower levels are going to look like?
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I would imagine those are temporary!
On a side note what's the hold up on OCS? I take it the alderman didn't get a big enough cut wich is why he's the only one holding this project from entering the construction phase... |
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Relax! |
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if you go back to january 2017 on the transbay block 5 webcam in San Francisco you can see more or less how its done (very similar bracing situation on that project) https://app.oxblue.com/open/clarkconstruction/block5 |
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:slob: |
Dec 6
   The gravel fill from the hole - protects the rebar that is sticking up out of the piling. The top of the rebar will be at or near the top of the foundation mat.  The pink loops are the rebar sticking out of the piling.   |
Snapped a few shots on Sunday. My first visit to the project actually. Impressively large hole. Need to get back one day when they're working to add human scale. Definitely want to be around for the mat pour. Forum meet-up??
https://pbs.twimg.com/media/DQxxIqDUEAAtKri.jpg https://pbs.twimg.com/media/DQxxIpaUQAAh_1f.jpg https://pbs.twimg.com/media/DQxxItnV4AEK8aK.jpg https://pbs.twimg.com/media/DQxxIpaUQAYTxaa.jpg |
I'm in nick. Just give me a date and time. Im still in the burbs but if i drive down that would give me a chance to walk over and see vista again as well.
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Renelle kind of going up overnight at this point. Amazing how quick when you don't have to do a foundation of any kind
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Dec 19
  Sleeper in the works ? (note the foundation poking up at the back).  Another foundation pile being un-graveled.  Dec 15 Old wooden pilings - the anaerobic clay preserves the wood very well.  The red wires go to strain gauges on the crossbeams.  |
December 19, 2017
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Still can't wrap my head around how much better the Apparel Center looks with that new paint job. I think a lot of it is me not being used to seeing it in any color other than pukey-beige-mustard.
Great pics as always, Solar! |
It's like looking at a new building with that paint job!
Fantastic..... |
Why are huge holes in the ground so fricking cool, love this project.
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The Holiday Inn repaint was a good aesthetic move, IMO
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Not sure if it looks better, just different. Atleast they took down the partly hidden Sun Times sign.
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I would have loved it if it had been painted a super bright white.
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Are the going to repaint or reclad the base too? Because it really clashes in a bad way right now. Not sure painting those bricks would end up looking that good either.....
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Are they keeping the temporary bridge up for the south tower as well? I just dont see how else they will get equipment and supplies in and out of that space, except through the circle drive. That water has got to be way to shallow for a barge crane. That is going to be an engineering jawdrop when it happens.
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From the renderings you can see that WPE will be more or less lined up with the parking structure for WPW leaving a decent amount of space to get in and out. |
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Tonally, the tower doesn’t have enough contrast with the base anymore so there is a weird visual tension that wasn’t there before. Even worse, even though the building is wasn’t great, the light beige would have been a great backdrop for the glassy gray/blue buildings in front. The color contrast would have helped make the foreground buildings stand out more. Now it will look like a muddy dark mess. |
Dec 22
 Found where they buried the foundation piers.  A pair of spread footing piers poke their tentacled heads above the clay. Ready for the long sleep(er).   One of the rock-socketed piers. I believe the blue wires are for O-Cell testing.  |
Dec 27
  Dec 29  |
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Anybody know if they refurbished the inside too? The carpet there has to be the most hideous I've ever seen. And certainly not conducive to walking in a straight line after some drinks. |
Jan 3
  Note the "bricks" put under the bottom rebar so it is positioned correctly at the bottom of the pour   |
Amazing pictures! :tup:
Construction site of the year award, this is the one I'm watching the most! |
^ I love it, my office is directly across the river on Wacker peering straight down into this thing.
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God you really gotta hand it to these guys for enduring this weather in that pit. Geez. I hope they get overtime or something.
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Future architectural historians/people of Chicago are fortunate to have people like those in this forum out taking such great pictures.
I also agree that the Holiday Inn touch up is an improvement. The whole building will thankfully be blocked from view soon enough, so no need to stress about the conflicting base and tower. |
So are they done digging down now?
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