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Re: Bolt Holes, Another Application

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We, too, use the second method Harold described.

Daniel J. Huntington
Structural Engineer

KJWW Engineering Consultants, P.C.
623 26th Avenue
Rock Island, IL 61201
PH: (309) 788-0673
Fax: (309) 786-5967


Harold Sprague wrote:

> Bill,
> I have done it 2 different ways.
> 1.  Put shear lugs on the setting template & weld a bar from the base plate
> to the setting template.  That way the shear never goes through the anchor
> bolts.
> 2.  For smaller shear loads:
>         a. Use the oversized base plate holes (for ease of erection).
>         b.  Provide plate washers 3" x 3" x 1/4" (with the standard 1/16"
> oversize holes) under the head of the anchor bolt.
>         c.  Weld the plate washer to the base plate.
> Regards,
> Harold Sprague
> The Neenan Company
> -----Original Message-----
> From: Bill Sherman [mailto:SHERMANWC(--nospam--at)]
> Sent: Thursday, April 15, 1999 10:44 AM
> To: seaint(--nospam--at)
> Subject: Re: Bolt Holes, Another Application
> Another question on standard vs oversized bolt holes - what about holes for
> anchor bolts in base plates where shear is to be transferred from the base
> plate to the anchor bolt?  While contractors prefer to use oversized holes
> at
> base plates due to construction tolerances, how can you count on shear
> transfer if holes are oversized?  (i.e., with reversible wind or seismic
> loads.)
> I normally specify anchor bolts to be placed using a template and use
> standard
> hole sizes (1/16" over bolt size) where shear is to be transferred, but I am
> curious as to what others do.