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Old July 10th, 2011, 05:19 PM   #1841
lianli
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Wow, those are some deep holes...could probably throw a few dead bodies, bury them under concrete and no one would ever know...
You're ******* scary.
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Old July 10th, 2011, 07:07 PM   #1842
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They are going to wake up Balrog.
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Old July 10th, 2011, 09:13 PM   #1843
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yes a very scarey person indeed.
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Old July 10th, 2011, 09:52 PM   #1844
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Hi all.

I see some water in the hole for (I think) one of the supercolumn piles.
I wonder what their strategy is to keep the holes under the main structure dry ? I don't see any de-watering equipment. As they were dug by hand they must remain dry.

I guess they will be pouring the piles soon. It will be interesting to see if they dig some more around the piles after the concrete has cured some - before they get ready for the raft. My point being - how many basement levels will they end up with ? It's not looking like the 5 in the drawings posted here but given the unconventional methods used on this project, who knows ?


Ray.
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Old July 14th, 2011, 03:06 PM   #1845
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this process is so slow
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Old July 15th, 2011, 02:37 AM   #1846
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July 10~ by Ryen



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Old July 15th, 2011, 03:20 AM   #1847
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what happened to the famous chinese pace ? fading away
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Old July 15th, 2011, 06:46 AM   #1848
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what happened to the famous chinese pace ? fading away
I think you don't realize the quantity of work they're doing here! Remember that it's "hand-made".
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Old July 17th, 2011, 02:14 PM   #1849
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question ,has all that water have to be pumped out of those deep holes before concrete can be poured in , cos when i done alot of house foundations we poured concrete in and as the concrete rosed up ,the water came out over the top of ground level ? may be not to these big examples .
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Old July 17th, 2011, 10:27 PM   #1850
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Hi all.

Hi Sock.

Most likely in the same way a slurry wall is poured they will pump the concrete down a pipe to the bottom and catch the water as it overflows from the top.

I would like to know how they kept the water out while men were at the bottom, hand digging. I see hoses running down to the bottom while they were digging, so they could remove any excess water but it didn't look like they were hauling up mud in those buckets.

Anyway I wonder if they have started pouring the piles ?


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Old July 18th, 2011, 12:28 AM   #1851
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Hi all.

Hi Sock.

Most likely in the same way a slurry wall is poured they will pump the concrete down a pipe to the bottom and catch the water as it overflows from the top.

I would like to know how they kept the water out while men were at the bottom, hand digging. I see hoses running down to the bottom while they were digging, so they could remove any excess water but it didn't look like they were hauling up mud in those buckets.

Anyway I wonder if they have started pouring the piles ?


Ray.
Yes, the pipe is called tremie pipe. It extends to the bottom.

There are basically 2 ways to keep ground water out from excavation. The first is to drill and install water discharge wells in the area, to lower the ground water table level to below excavation level. Thus the water remainng in the holes is probably from rainwater entering the holes and not ground water. Another method is obviously to pump the water out directly, usually via electric submersible pump.
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Old July 18th, 2011, 03:54 AM   #1852
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Hi all.

Hi Chewys.

Thanks for the insights.
I am aware of the methods used to de-water sites.
My point was, I didn't see any method used previously.

I took a good look through the 544 construction pics I have.
- They did do a secant wall around the perimeter of the site
- There are what look like drinking water wells in my country on the site with pumps suspended on top and hoses hanging down inside. These must be for de-watering. These are open top wells whereas most projects use closed top pumps. Yet another unconventional technique like many others used on this project.

I agree the pile we see filled with water is probably from rainwater. The other method you suggested of just pumping the water out is an after thought method that would leave the men slogging in mud at the bottom of the piles.


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Old July 18th, 2011, 06:12 AM   #1853
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the holes is so deep!omg..is it because of it height?
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Old July 18th, 2011, 12:50 PM   #1854
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And because of soil. Just remember Jin Mao in Shanghai, it had roughly 80m deep holes for piling of the foundations because of unstable soil. So itīs similar I guess.

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Old July 19th, 2011, 03:54 AM   #1855
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And because of soil. Just remember Jin Mao in Shanghai, it had roughly 80m deep holes for piling of the foundations because unstable soil. So itīs similar I guess.
I thought Shenzhen had much better soil than Shanghai. Shanghai is known for unstable and muddy soil which makes construction of skyscrapers more complicated and costly (not that it matters, as we all see ).
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Old July 23rd, 2011, 02:43 PM   #1856
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by gjhhose
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Old July 24th, 2011, 12:47 PM   #1857
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nice holes they look like wells probably samara would climb out of it.
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Old July 24th, 2011, 05:35 PM   #1858
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by 校长 2010-07-24













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Old July 24th, 2011, 06:09 PM   #1859
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Engineer: "Now, for the construction of this building, destined to become one of the tallest structures in the world, We will have to use the latest of technology and the most sophisticated equipment available."
*Opens umbrella*
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Old July 24th, 2011, 08:40 PM   #1860
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The Design is not bad but the real beauty is its height.....Very Impressive.

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Engineer: "Now, for the construction of this building, destined to become one of the tallest structures in the world, We will have to use the latest of technology and the most sophisticated equipment available."
*Opens umbrella*
Lmao
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