Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: Epoxy Anchor -Reply

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Please send copies of reports to D.F. WHEELER, ENGINEERS fax(914)758-3768.
Thanks

dan wheeler

Anderson Pete (ap) wrote:

> Both reports were renewed as of July 1, 1998 and specifically allow for
> seismic laoding.  Call me direct at 1-800-879-6000 X6884 and I will fax
> them to you.  Or you can E-mail me your fax number and I will send them.
>
> Pete Anderson
> Hilti, Inc.
>
> > ----------
> > From:         John Armijo[SMTP:421jarmi(--nospam--at)pwcsd.nosc.mil]
> > Sent:         Monday, September 21, 1998 5:23 PM
> > To:   seaint(--nospam--at)seaint.org
> > Cc:   Anderson Pete (ap)
> > Subject:      RE: Epoxy Anchor -Reply
> >
> > 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)us.hilti.com> 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)silcom.com]
> > > Reply To:   seaint(--nospam--at)seaint.org
> > > Sent:       Thursday, September 17, 1998 7:32 PM
> > > To:         seaint(--nospam--at)seaint.org
> > > 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
> > > HILTI
> > > 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
> > new
> > > 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
> > work
> > > 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.
> > > >
> > > >
> > >
> > >
> > >
> > >
> >
> >
> >
>