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Old May 17th, 2008, 07:57 PM   #6161
hellrazor650
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when is it scheduled for completion and how much floor space will it have? Not that much right because of being so skinny.
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Old May 18th, 2008, 02:02 AM   #6162
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Quote:
Originally Posted by hellrazor650 View Post
when is it scheduled for completion and how much floor space will it have? Not that much right because of being so skinny.
I read or heard that it's around 1.5 million sq. ft., but i'm not sure, it seems to me it would be closer to 2 million sq. ft. minus the core area, also there is still much foundation work still to be completed.

It looks as if the core cassions are completed, (i believe 7 total) which required drilling into solid bedrock, but we've seen nothing to indicate work on the 7 perimeter support columns, (other than sheet pilings driven at there locations) i'm assuming that work on these footings will take place as the site excavation prossess begins, as these footings are much smaller in area, and equipment used to install them will most likely be placed outside the work (footing) area, after several levels have been excavated, (i'd say about the 5th sub level) with the core rising to a few levels above grade, at the same time the perimeter columns cassions are being socket drilled into bedrock.

I'm only taking a guess as to the time frame, but i'll bet 6 to 8 months before this tower begins to rise with standard floor plates, with the core above grade in half that time.
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Old May 18th, 2008, 05:04 AM   #6163
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Finally, a ballpark figure. My gosh, thank you.
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Old May 18th, 2008, 01:07 PM   #6164
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Quote:
Originally Posted by ZZ-II View Post
not sure, never saw a tower with Top-down method UC before
this "top-down method" is mentioned alot in this thread, however i don't know exactly what it means?
can someone shed some light on this please?
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Old May 18th, 2008, 03:53 PM   #6165
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Quote:
Originally Posted by Infrasuper Planet View Post
this "top-down method" is mentioned alot in this thread, however i don't know exactly what it means?
can someone shed some light on this please?
Downtown Chicago is built on landfill and blue clay. Digging a pit 30-40' deep requires a ridiculous amount of bracing, which must be worked around, then cut out, ....... . For the 70'+ basement 225" wide and close to 500' long something else is required. CASE has now put in the walls ( Secant and Slurry ). Next the ground will be excavated down to the level of L1's ceiling - exposing the top of the wall and some of the caissons - and the ground floor will be built. a hole will be left in the floor. With the floor to hold the walls apart the next level can be excavated, repeat 6 times.

Waterview


300 N LaSalle



Block 37 ( In Chicago )

Photo is from April of 2007 - they were removing dirt for over a year.
March 2008


<Speculation>This may be closer to what we see DiShow </Speculation>.

The same method ( secant walls and then a circular core coffer dam ) is being used on OMPW-1 .
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Old May 19th, 2008, 02:33 PM   #6166
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May 17

These shots are from Saturday - no pictures from today - going to the NRA show with the little woman ( National Restaurant Assoc ).

Pretty quite on a Saturday morning


Numbered series


Tour boat on the river ( not BVic in front)


The plumbers at work again.


A caisson top - moved out of the way


More caisson photos from Friday 56 Photos
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Old May 19th, 2008, 02:48 PM   #6167
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nice shots... seems that the spring is finally there? the trees have aren't fully lush yet....
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Old May 19th, 2008, 02:53 PM   #6168
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I have studied the top-down method of construction now and can appreciate why it will take so long. I'll just have to be patient now and wait for this thing to rise.
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Old May 19th, 2008, 03:46 PM   #6169
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"it will take so long"??? guy, this construction is quite fast . and we've not even one year since the construction started
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Old May 19th, 2008, 04:27 PM   #6170
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Quote:
Originally Posted by Westyguy View Post
I have studied the top-down method of construction now and can appreciate why it will take so long. I'll just have to be patient now and wait for this thing to rise.
Guy, study again. The top-down construction is FASTER than traditional construction, where before rising, the underground part needs to be completed. With this method, the spire will start rising way before that.
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Old May 20th, 2008, 07:17 PM   #6171
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http://www.pamgolding.co.za/internat...icagospire.asp

Chicago Spire goes on sale in South Africa.
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Old May 20th, 2008, 11:00 PM   #6172
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..

Last edited by SGMD1; September 12th, 2013 at 07:43 PM.
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Old May 20th, 2008, 11:01 PM   #6173
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..

Last edited by SGMD1; September 12th, 2013 at 07:43 PM.
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Old May 21st, 2008, 07:09 AM   #6174
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Quote:
Originally Posted by SGMD1 View Post
link to post?
It was already in the quote I posted, after the username.

but it's all explained on p.215
http://www.skyscrapercity.com/showth...34232&page=215
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Old May 21st, 2008, 07:25 AM   #6175
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Oh noes vanherik is banned!
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Old May 21st, 2008, 08:22 AM   #6176
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What kind of metal are they using for their main beams? steel? Is that enough to not fall over if a jet crashes into it?
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Old May 21st, 2008, 08:27 AM   #6177
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Quote:
Originally Posted by hellrazor650 View Post
What kind of metal are they using for their main beams? steel? Is that enough to not fall over if a jet crashes into it?
Please, please, please... try to avoid bringing up images such as this...
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Old May 21st, 2008, 04:02 PM   #6178
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May 21 - AM

From above



higer res
2007 series
2008 Q1 series
2008 Q2 series




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Old May 21st, 2008, 04:11 PM   #6179
ZZ-II
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do they still carry out dirt out of the hole?
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Old May 21st, 2008, 04:30 PM   #6180
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Sorry if this has been asked before.

How close will the building's edge be to that roadway? I understand that the hole as pictured is esentially the core....yes? If that's correct then I see the building being pretty close to the highway.
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