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RE: Sole plate anchor rod holes

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Look up the ACI tollerances for placement of embedded items like anchor bolts. I can't recall what they are off hand, but it will make you cringe. Then compare that to normal steel shop AISC tollerances. I would not depart from the manufacturer's recommendations.

Harold Sprague

From: "Chris Towne" <ctowne(--nospam--at)>
Reply-To: <seaint(--nospam--at)>
To: <seaint(--nospam--at)>
Subject: Sole plate anchor rod holes
Date: Fri, 16 Sep 2005 12:01:33 -0400

For you bridge engineers...

We are reviewing shop dwgs and the fabricator wants to put a 2" dia. hole in
the bearing sole plate for a 1.5" dia. anchor rod.  This seems excessive.
Does anyone have any suggestions?

The bridge is a simple span, 48' long, one end fixed and the other end
expansion with no anchor rods.  The bearings are steel reinforced
elastomeric pads.

Chris Towne, P.E.
Chapman Technical Group
200 Sixth Avenue
St. Albans, WV 25177

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