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RE: Epoxy Anchor -Reply

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ER 4627 (Kwik-Bolt II) dated July 1, 1996 was FAXED to me today from
1-800-879-8000. ER 4627 has a sentence in the Findings section of the
report that reads, "6. Use of the anchors in resisting wind and seismic
forces is beyond the scope of this report."

The Findings section of ER 3987 dated July 1, 1996 does not have the
wind and seismic disclaimer above. But, it also does not specifically
mention that it is usable for wind or seismic loads.

Did I get an old copy of the reports since the reports are subject to
re-examination in two years from July 1, 1996? 

>>> "Anderson Pete (ap)" <ANDEPET(--nospam--at)> 09/21/98 08:58am

Both the HSL and the KWIK BOLT II have been listed by ICBO ES for
seismic loading.  See latest versions of ER #4627 and ER #3987.  Contact
Hilti at 1-800-879-8000 for current copies.  

> ----------
> From: 	Lynn[SMTP:lhoward(--nospam--at)]
> Reply To: 	seaint(--nospam--at)
> Sent: 	Thursday, September 17, 1998 7:32 PM
> To: 	seaint(--nospam--at)
> Subject: 	Re: Epoxy Anchor
> We have just been through a similar issue with OSHPD on a hospital
> project.  Because epoxy anchors do indeed loose significant strength
> when
> heated, they should not be used to support any kind of gravity
> loading.
> If the anchors are just carrying seismic or wind loads, OSHPD (and I
> assume DSA) will in fact allow the use of epoxy anchors.
> The problem with expansion bolt is that with the exception of the
> HSL anchors, none of the expansion type anchors have ICBO approved
> design
> values for seismic loads.  The HILTI HSL anchors are metric, made in
> Germany, and are very expensive.
> OSHPD will in fact accept the HILTI KWIK BOLT II for use as seismic
> anchors if you use 80% of the ICBO number for gravity loads for shear
> or
> tension.  However, there could be a problem down the road when the
> ICBO reports come out if the allowable shear and tension values are
> lower
> than what OSHPD is currently allowing.  Admittedly the chance of this
> happening is small.
> In our case, we ended  up using epoxy anchors because all of our
> involved anchors that only carried seismic anchors for floor mounted
> equipment.
> Good Luck
> Lynn
> James Lin wrote:
> Project: Retrofit the existing concrete building (school job)
> > Location: Southern California
> > DSA correction: Use drilled and grout anchor bolts (instead of Hilti
> > Hit HY150) to fasten new steel ledgers to existing concrete walls
> > (Since raised temperature during fire will reduce the bond strength
> of
> > epoxy anchors)
> >
> > We still like to use epoxy anchors for the following reasons
> > 1. better quality control (for installation) over drilled and grout
> > anchors
> > 2. less chance to cut the existing rebars
> >
> > Any opinion/suggestion to response to DSA (Department of State
> > Architect of California)?
> >
> > Thanks in advance
> >
> > James Lin, S.E.
> > I. D. S.
> >
> >