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RE: Testing Epoxied Anchors

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Larry

 

You are correct all contractor in southern California  know that special inspection has been required for epoxy anchors since the 97 UBC.

 

He forgot or probably couldn’t get someone one the day he chose to put them in. In his mind it is now your problem because of his mistake. You need to ask him how he is going to take care of his problem.  You may suggest he contact Twining lab or another firm.

 

Joe Venuti,  P.E.

Joven Engineering

La QuintaCA

jovenengr(--nospam--at)verizon.net


From: Larry Hauer [mailto:lhauer(--nospam--at)live.com]
Sent: Tuesday, April 06, 2010 7:14 AM
To: Struct. Eng. Assoc.
Subject: RE: Testing Epoxied Anchors

 

Gary,
 
Thanks for that advice, but any contractor working here in Southern California would know what the know what that means, or at least call to get an explanation of it, (he called me on enough other items).
 
Thanks,
 
Larry
 
> Date: Tue, 6 Apr 2010 08:08:03 -0400
> From: design(--nospam--at)hodgsoneng.ca
> To: seaint(--nospam--at)seaint.org
> Subject: Re: Testing Epoxied Anchors
>
> Larry,
> I looked at your comments a second time and realized that perhaps the
> Contractor thought this was something you were going to do or arrange.
> I worked for a large consulting firm once that gave brief seminars on
> specification writing in which they emphasized proper English. One of
> their points was to put statements in the active sense rather than the
> passive, i.e. "the contractor shall arrange to have special inspection
> performed" or something like that. Perhaps that is what you had in your
> specs, but your e-mail gives the other feeling.
> Gary
>
> On 4/5/2010 12:32 PM, coengineer(--nospam--at)aim.com wrote:
> >
> > I have seen this done many times. There may be some inaccuracies due
> > to the wide variations in K factors, but try to match the K to the
> > actual condition of the rods used in the field. Also, you will only
> > be testing the bond strength (not concrete breakout), but this is
> > probably appropriate for a verification type test. Hope that helps.
> > Howard Silverman, PE
> > Covert Operations/USP Structural Connectors
> > www.USPconnectors.com <http://www.USPconnectors.com>
> > -----Original Message-----
> > From: Larry Hauer <lhauer(--nospam--at)live.com>
> > To: Struct. Eng. Assoc. <seaint(--nospam--at)seaint.org>
> > Sent: Sat, Apr 3, 2010 8:57 am
> > Subject: Testing Epoxied Anchors
> >
> > I performed the engineering on a seismic retrofit of a 2 story
> > concrete exterior wall and wood roof/2nd floor building and used
> > epoxied threaded rod anchors to connect the exterior walls to the
> > roof/floor framing. Even though each detail had the note "Special
> > Inspection Required",(and underlined), plus my inspection notes said
> > that all epoxied anchors shall have "Spcial Inspection During
> > Installation", the contractor failed to do this!
> >
> > The space is very tight where the anchors have been installed and I
> > think it is just about impossible to set up an aparatus to "pull test"
> > the anchors and would like to torque test them using the formula of
> > T=(KxDxFp)/12 to get the equivelent torque for required anchor
> > tension, (2x the design load).
> >
> > Does anyone have any comments on this?
> >
> > Thanks in Advance,
> >
> > Larry Hauer S.E.
> >
> >
> >
> > ------------------------------------------------------------------------
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>
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