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Old March 11th, 2008, 08:23 PM   #5441
mgk920
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It is not unusual for professionals in the field, and with the whatever in particular, to read 'fan' websites about their projects.

A few years ago, I was doing a weekly web thing where I would scan a copy of a USGS topographic map and put that image, with some comments, on a website. I was getting about 500 hits/week on it, including from MANY actual highway department guys.

One installment of that kind of stands out to me in that I made a comment about a deficiency in what I was featuring and about a month or so later, I got word from someone whom had just driven through it that that deficiency had been FIXED within a week or so before he drove it.

(The specific site is on gribblenation . com, then search for 'highway feature of the week' and then for 'I-39/US 20/51 west interchange, Rockford, IL' - it regarded a bad lane merge - some people at IDOT were regular readers.)

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Old March 11th, 2008, 10:00 PM   #5442
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Re: "This tower does not suit to Chicago skyline." Why should it? In most european cities you can take a trip through time by studying their architecture. A homogeneous skyline tends to make you feel lost, and bored. Architecture changes, styles change, technology changes. Not always for the better, but in the case of the Chicago Spire it is.
Yes, the plot is small. Every skyscraper blog I've been to acknowledges this. Its common knowledge. You want to be by the water you pay top price and take the best lot you can get. And yes the building is exceptionally thin. Read the intro to this blog. Learn about the building you're writting about. Its thinness is one of its beautiful achievements.
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Old March 11th, 2008, 11:00 PM   #5443
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The location, small as it is, is still prime lakefront property.

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Old March 12th, 2008, 12:00 AM   #5444
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Quote:
Originally Posted by dkrager View Post
Re: "This tower does not suit to Chicago skyline." Why should it? In most european cities you can take a trip through time by studying their architecture. A homogeneous skyline tends to make you feel lost, and bored. Architecture changes, styles change, technology changes. Not always for the better, but in the case of the Chicago Spire it is.
Yes, the plot is small. Every skyscraper blog I've been to acknowledges this. Its common knowledge. You want to be by the water you pay top price and take the best lot you can get. And yes the building is exceptionally thin. Read the intro to this blog. Learn about the building you're writting about. Its thinness is one of its beautiful achievements.
Well said. You should post more.
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Old March 12th, 2008, 05:10 AM   #5445
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Waynechicago, thanks for that pic. Provides a clearer image of the Spire's surroundings. Def is prime property. What's on the square peninsula where the yatchs are moored? Park / Green strip?
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Old March 12th, 2008, 05:21 AM   #5446
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Quote:
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great pic, defantly would be a good pic in the future when its rising
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Old March 12th, 2008, 06:32 AM   #5447
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Area beyond Spire site

Quote:
Originally Posted by aravinda View Post
Waynechicago, thanks for that pic. Provides a clearer image of the Spire's surroundings. Def is prime property. What's on the square peninsula where the yatchs are moored? Park / Green strip?
The area you are talking about is part of the landscaping / entrance to Navy Pier. You can see the circular drive in this google earth image (it's an older image - no construction of the spire, yet).

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Old March 12th, 2008, 10:04 AM   #5448
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anyone any idea what the psf price is?
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Old March 13th, 2008, 12:04 AM   #5449
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March 12 - noon

From above



higer res
2007 series
2008 series


The dirt bucket


Rebar for the caissons at the bottom of the hole



A few cages ready for the garage pillars

Sleeves waiting

Sleeve in the air



Work on a sizable caisson - in the garage area

And another one

Using a belling bit for these

2 other big caisson tops that have been put in in the last few days ( the shorter ones)

7' diameter - this is just the top, as seen above another tube ( sleeve ) is inside.



Small cage for small holes


Busy site

Muddy site


Digging a hole - probably trying to dig out some obstruction from the past

Debries


Piling head - squared off at the top with bolt holes
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Old March 13th, 2008, 12:12 AM   #5450
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fantastic update as always harry . hope they'll finish the slurry and secant walls already this month that they can start with the big excavation soon
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Old March 13th, 2008, 12:28 AM   #5451
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I want this one to start rising so badly
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Old March 13th, 2008, 12:38 AM   #5452
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I'm shure that now the progress will be much faster
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Old March 13th, 2008, 12:49 AM   #5453
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very nice update. Must be amazing to drive that highway as soon as this monster is entering the top...
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Old March 13th, 2008, 01:01 AM   #5454
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March 12 - drill bits

Grinder used for grinding sockets in the bedrock for the main caissons. The grinder operates underwater ( underslurry ? ). Compressed air causes the gravel to circulate up and become trapped on top.
Shoveling off the more stubborn deposits.


Blowing off the last stuff.




Augar These do most of the work, drilling through Chicago fill and clay.












Spinning off fill dirt - and clay


Belling After the auger bits have done their work at the bottom a belling bit is used to give the caisson a larger footprint. The hardpan these caissons sit on has a lower bearing per sq ft than the concrete, so the end is spread out to distribute the load over more hardpan.
Gently moving one around.


Swapping out, this truck brought 2 in and took one away.


Can ? Used to bring up liquidish mud.
Top - you can see where it has been rotated 180deg

Bottom, when rotated the bottom is totally closed.
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Old March 13th, 2008, 01:18 AM   #5455
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I can't wait for the spire to rise above ground level. Truly will be a symbol of american progress and innovation. I hope chicago can kick another one of these beautiful towers to make chicago even more beautiful for the OLYMPICS is 2016.... trust we'll get them=)
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Old March 13th, 2008, 06:08 AM   #5456
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do you think Spira would be seen from all the bay?
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Old March 13th, 2008, 05:45 PM   #5457
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Quote:
Originally Posted by ZZ-II View Post
fantastic update as always harry . hope they'll finish the slurry and secant walls already this month that they can start with the big excavation soon
I am more excited for this then I am for it to rise. I like digging. it exposes area that will never be seen again.
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Old March 13th, 2008, 05:55 PM   #5458
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and you've much more visible progress
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Old March 13th, 2008, 08:55 PM   #5459
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with the top-down construction of the foundations on this though, won't the work be less visible than on a more conventional site?
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Old March 13th, 2008, 09:14 PM   #5460
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Can someone post the picture of the garage? I just want to see how many garage supports they have to do. I think they had 22 to do, for the core.
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