bore pipe out of buttress
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Posted by: hoel48 ® 07/29/2009, 00:53:45 Author Profile eMail author Edit

Hi again! Please first take a look at the attachment. I'm trying to bore the corroded 4" w.i. pipe out of this 30" thick concrete buttress so I can put some new 4" carbon in. Any suggestions on how to do that/what tool to use? Also, I need to be ensured that the space between the o.d. of the new pipe and the concrete bore is water tight. Any suggestions on what to use as a filler and how much space to allow between the concrete bore and the pipe o.d.? Thanks Again!!!

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: bore pipe out of buttress
: bore pipe out of buttress -- hoel48	Post Reply	Top of thread	Engineering Forum

Posted by: Kelly Bramble ® 07/29/2009, 08:21:34 Author Profile eMail author Edit

Well, there are large diameter concrete boring machines and tools. I don't know where to tell you to look or how to obtain one of setups - rent, lease, hire. Technically, I believe the concrete would need to be bored oversize or larger than the corroded pipe. Then a sleeve and grout installed then your graphite pipe. You might be able to rent a large diameter carbide drill, magnetic base drill motor and anchor a steel plate and physically drill out the pipe. - thinking out loud.. 4" is not that large.   Modified by Kelly Bramble at Wed, Jul 29, 2009, 08:21:57

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: : bore pipe out of buttress
: : bore pipe out of buttress -- Kelly Bramble	Post Reply	Top of thread	Engineering Forum

Posted by: RWOLFEJR ® 08/03/2009, 09:03:42 Author Profile eMail author Edit

I'd cut it out with a plasma cutter. Cut strips length-wise etc. to make it easier to remove in pieces. You'll need a helper with skinny arms for the deep part.

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