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Old Posted May 10, 2017, 7:16 PM
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harryc harryc is offline
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Join Date: Jun 2007
Location: Oak Park, Il
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Originally Posted by BVictor1 View Post

I believe that the pipe thing is used with a slurry - the muddy water filling the shaft and helping support the sides during drilling, and placement of the re-bar. The long pipe is to get the concrete through the slurry to the bottom of the pile, where it (being heavier than water) fills up the hole and displaces the slurry.

Harry C --- Chicago rep for SkyRise Cities ---- My Flickr stream HRC_OakPark
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