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Re: Leveling Nuts

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John,
 
You may bring the planchecker's attention to AISC Publication D801 "Column Base Plates" that discusses the issue at length.  
 
The whole purpose of leveling nuts is to avoid the use of shims. 
 
To prevent the "column from sitting on the bolts" one needs to specify proper (non-shrink) grouting and adequate grout holes - a pretty well established procedure. 
 
Besides, what if the column will be "sitting" on shims? 
 
HTH
 
Steve Gordin SE
Irvine CA
 
 
 
 
 
 
----- Original Message -----
Sent: Wednesday, September 14, 2005 9:04 AM
Subject: Leveling Nuts

I have a plan reviewer telling me that if I allow leveling nuts, I must specify that the column be leveled, shimmed, then the leveling nuts backed off before grouting. The erectors I have asked have never heard of this. Has anyone else? I assume the point is to keep the column from sitting on the bolts, but so what?

 

John L. Smart

Lindsey & Ritter, Inc.

smartj(--nospam--at)smartengineers.com