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Old July 26th, 2008, 10:07 PM   #6841
The Other Guy
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I dunno... I think the building's kinda ugly. Looks like a giant drill bit.
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Old July 27th, 2008, 01:40 AM   #6842
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Fury, I am not into construction stuffs and, my suggestion might have been a little bit out of proffessionalism, though. I am learning something here everyday about skyscrapers, construction and its paraphenalias.That`s a good thing for me.
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Old July 27th, 2008, 07:07 AM   #6843
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Hey - no offence was intended.

It was meant to say that of course sand dust as any dust is not good for your lungs but it is not like it is toxic to the environment.

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Old July 27th, 2008, 07:09 AM   #6844
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Thank God! I was off the site for a few months, and I came back worrying I had missed interesting progress on the Chicago Spire, but lo and behold it's still just a big hole in the ground. Lucky me.
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Old July 27th, 2008, 11:25 AM   #6845
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what kind of piles are they using ? havent been here for a while so i dont know if thats been asked
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Old July 27th, 2008, 12:56 PM   #6846
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Watch these, they contain everything you need to know
http://www.youtube.com/watch?v=4v5LWchzlxE
http://www.youtube.com/watch?v=q-hDTX-Qgd8
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Old July 27th, 2008, 02:57 PM   #6847
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why have I watched this 94 times?

No complaint, keep the same links comming people, it just gets better everytime I watch it.
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Old July 27th, 2008, 05:37 PM   #6848
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Quote:
Originally Posted by Westyguy View Post
So from what i have been reading and what I've understood is that the Spire should be above ground level 12 months from now (July 2009)?

Is this correct?
You got to be freaking kidding! Please say you do.
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Old July 27th, 2008, 05:38 PM   #6849
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Quote:
Originally Posted by buildmilehightower
why have I watched this 94 times?
I don't mean to be impolite but you really don't have to post every thought that pops into your head.

Last edited by Zollern; July 28th, 2008 at 10:28 AM.
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Old July 27th, 2008, 06:47 PM   #6850
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Quote:
Originally Posted by helghast View Post
what kind of piles are they using ? havent been here for a while so i dont know if thats been asked
Standard old sheet piles.



The caissons are all reinforced concrete, the scanted caissons have a big I-Beam in them.
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Old July 27th, 2008, 06:49 PM   #6851
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is there a video where it tests strength of normal pure concrete against same concrete with reinforcements inside it?

there should be figure for rough compression strength difference between the two as well cos I wanna see.
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Old July 27th, 2008, 08:25 PM   #6852
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Quote:
Originally Posted by buildmilehightower View Post
is there a video where it tests strength of normal pure concrete against same concrete with reinforcements inside it?

there should be figure for rough compression strength difference between the two as well cos I wanna see.
The main benefit of reinforced concrete is in giving tensile strength to the concrete. Steel reinforcement helps prevent cracking from non-tensile action as well (from e.g. thermal expansion and contractions).

Concrete has good compressive strength by itself, and steel is not typically added to improve compressive strength. As far as I am aware there is not much difference in compressive strength between non-reinforced and reinforced concrete for the same mix type.

The reason for the large steel beams in the secant wall is probably because those walls have a large shear force applied, since the surrounding soil will be pushing in once one side is excavated (shear = sideways action on the member and poorly resisted by non-reinforced concrete).
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Old July 27th, 2008, 08:38 PM   #6853
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Quote:
Originally Posted by buildmilehightower View Post
is there a video where it tests strength of normal pure concrete against same concrete with reinforcements inside it?

there should be figure for rough compression strength difference between the two as well cos I wanna see.
The interaction of the steel reinforcing in the concrete is very complex. It really doesn't change the compressive strength of the concrete. Putting it simply, it makes the concrete more resistant to flexion. The compressive strength of the concrete is tested by normal means. The actual strength of the combined structure is not tested but rather calculated during the design process based on the strengths of the individual materials.
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Old July 27th, 2008, 10:17 PM   #6854
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Concrete Strength

Tested last August with OCells

The OCell site

measurement wires and tubes




An OCell


Ready for installation ( Aug 10 2007 )


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Old July 27th, 2008, 10:28 PM   #6855
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When is this skycraper construction expected to get above ground? I occasionally come here for many months now and all i see is a big hole in the ground.
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Old July 27th, 2008, 11:05 PM   #6856
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Have somebody or know somebody who have construction photos of Chicago Spire in high resolution ??? I need it for my new book about skyscrapers. Photographer will be also mention in book. Please contact at [email protected]
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Old July 28th, 2008, 12:45 AM   #6857
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Quote:
Originally Posted by Spartan_X View Post
When is this skycraper construction expected to get above ground? I occasionally come here for many months now and all i see is a big hole in the ground.
Spartan,

it takes many months to prepare the ground work for a 610 meter skyscraper, especially since the Spire is going up adjacent to the Chicago River, and Lake Michigan. They must make sure that the foundation is firm.

At any rate, people have been saying that above ground work may begin before the end of this year. Can anyone confirm this?
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for the Pelasgians, too, were a Greek nation originally from the Peloponnesus
The Roman Antiquities of Dionysius of Halicarnassus
http://penelope.uchicago.edu/Thayer/...assus/1B*.html

Macedonia, of course, is a part of Greece". Strabo, VII, Frg. 9
http://penelope.uchicago.edu/Thayer/...ragments*.html

But north of the gulf, the first inhabitants are Greeks called Epirotes....
Procopius
http://books.google.com/books?id=9m6...page&q&f=false
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Old July 28th, 2008, 12:49 AM   #6858
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you even bothered to answer that?
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Old July 28th, 2008, 03:35 AM   #6859
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LOL . For those who are impatient I'd recommend taking a little break from this tread and come back in a few months to check up on things. Trust me it helps thats I am doing for the Freedom Tower tread
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Old July 28th, 2008, 06:45 AM   #6860
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^that's what I'm doing.
Will they ever get this thing out of the hole?
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