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RE: Patching small holes in conc. slabs

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Title: Patching small holes in conc. slabs
Try chipping away the top of the slab to create a cone shaped opening.  then attach a form the the bottom of the slab and pour the concrete.  It holds itself into place.

Brian S. Bossley, PE
Ventura Engineering
7610 Olentangy River Rd.
Columbus, OH 43235
(614) 847-1110 x121

From: LaCount, Curt [mailto:Curt.LaCount(--nospam--at)]
Sent: Tuesday, April 05, 2005 6:17 PM
To: Seaint (E-mail)
Subject: Patching small holes in conc. slabs

I was wondering if anyone out there had a clever way of patching small holes in existing elevated concrete slabs.  The intent is to retain the fire rating and load capacity of an un-cored slab.  Drilling in dowels perpendicular to the hole face is not practical due to the small dimensions of the hole.  The dimensions I'm thinking about are from 2" diameter to 12" diameter holes in a 9" thick slab.

Thanks in advance,

Curt R. La Count, P.E.
Structural Engineer
Jacobs Engineering
Portland, OR

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