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Old December 9th, 2007, 11:49 PM   #4321
FTL Beach Bum
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Quote:
Originally Posted by harryc View Post
Those are 2-3' dia shafts - not exactly small
I hadn't noticed the holes to let water drain in.

Also looks like someone might have accidentally backed into it with one of the earthmovers...

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Seems to be just the right height where a track corner could have nicked it...
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Old December 10th, 2007, 12:41 AM   #4322
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I am still kind of confused about the way they gonna build the garage!! They are excavating the core, how about the garage?
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Old December 10th, 2007, 01:00 AM   #4323
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Quote:
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I am still kind of confused about the way they gonna build the garage!! They are excavating the core, how about the garage?
Something like this .... http://www.calice.igt.ethz.ch/Challe...H%2Dchallenge/ ( click on "diashow" - nachstes means next )
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Old December 10th, 2007, 02:21 AM   #4324
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Why top down?

Why not just dig out the hole, then lay the lowermost floor and work your way up to the surface? Just like building above ground.
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Old December 10th, 2007, 02:29 AM   #4325
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Quote:
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Why not just dig out the hole, then lay the lowermost floor and work your way up to the surface? Just like building above ground.
The circular core and "whaler" ring is an elegant solution, but it won't work on a box 225' x 500' x 70' ( aprox )

In top down the floor for the level above acts as the lateral bracing for the walls.

Traditional bracing ( raker beams ) would be difficult - here is what was done at 111 W Wacker - very small site - only 2 levels below ground - and they had an elevator core to brace against.


full set [ http://picasaweb.google.com/harry.r....SlideShow_Core ]

At 300 N LaSalle and 353 N Wacker the same basic pattern was followed.
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Old December 10th, 2007, 03:03 AM   #4326
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Hi, guys! Congratulations on getting Chicago Spire out of the ground and on the rise. I've been so wrapped up with what's happening here in Miami that I missed the start of construction. I've always loved Chicago's long linear skyline. I find it to be much more civilized than New York's skyline. With the "boom" going on here, we are hoping to get our first supertall soon. Wish us luck! We are getting a beautiful linear skyline like yours here with skyscrapers along the inlet of the Miami River as well. What has made it to construction thus far gives us the 3rd biggest skyline in the U.S. I can hardly believe it myself! I've never been to Chicago, but planning to finally make it next year (maybe late spring). I would love to see it after the Chicago Spire is completed, but don't think I want to wait that long. I'm glad Chicago Spire made it to construction to give the U.S. a new tallest in spite of all else
you're going to be more than welcomed...and I assure you that any prep work you need before that trip will more than gladly be met by the people on the chicago board in intricate detail.
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Old December 10th, 2007, 05:33 AM   #4327
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Thank you harryc! You answered my question from post #3112.

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The big pipes are sump holes - where water collects and pumped out

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Old December 10th, 2007, 11:41 AM   #4328
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Quote:
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Something like this .... http://www.calice.igt.ethz.ch/Challe...H%2Dchallenge/ ( click on "diashow" - nachstes means next )

thx Harry, very helpful. However, isnt that method going to slow down the process?
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Old December 10th, 2007, 11:58 AM   #4329
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another thing,
does that mean that they can start building up, while building down?
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Old December 10th, 2007, 01:53 PM   #4330
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Quote:
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another thing,
does that mean that they can start building up, while building down?
Thats the idea.
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Old December 10th, 2007, 03:56 PM   #4331
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Hey

Hi , this is my first comment on SSC but i've been following this thread since the begining.

Can someone explain clearly how did they put the wallers in the ground before the diging? It looks like they are at least 25 feet deep.
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Old December 10th, 2007, 04:02 PM   #4332
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Dec 10 - AM

From above [ full set http://picasaweb.google.com/harry.r..../400NLSDCSHeli ]



I'll post the rest during lunch.

You can see the second whaler being constructed now.
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Old December 10th, 2007, 04:07 PM   #4333
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they keep the speed up good work again harry
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Old December 10th, 2007, 04:43 PM   #4334
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Quote:
Originally Posted by Tylow View Post
Hi , this is my first comment on SSC but i've been following this thread since the begining.

Can someone explain clearly how did they put the wallers in the ground before the diging? It looks like they are at least 25 feet deep.
The 'whalers' are the concrete rings supporting the hole.

What you refer to I think is the sheet pile, which is driven into the ground using a pile driver, literally hammered down.

If you look back 10 or 20 pages of this thread you will see how it progressed, Harry C has posted some fantastic construction pics, at one point you can see the piles at different heights as they are being driven into the ground.


PS welcome to the site
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Old December 10th, 2007, 05:58 PM   #4335
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Vídeo:
http://www.youtube.com/watch?v=VIP9TkvQabQ
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Old December 10th, 2007, 06:02 PM   #4336
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Harry is the best
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Old December 10th, 2007, 07:38 PM   #4337
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i can't wait to see it rise...rise mutherfudger RISE!!! MUAHAHAHHAHAHA
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Old December 10th, 2007, 07:41 PM   #4338
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And what are you going to do with your time now this tower is only going down for a while?

probably look at the pictures
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Old December 10th, 2007, 07:45 PM   #4339
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Dec 10 - Core

Work on the next whaler.





Riverwall work.





Patterns in the park.

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Old December 10th, 2007, 07:45 PM   #4340
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Dec 10 - Ramps

From S Bound LSD
Long view



Rebar details





From N bound LSD
Long view



Sidewalk removed




Working on a support for the spans.





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