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RE: GL beam strengthening
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: GL beam strengthening
- From: "Eli Grassley" <elig(--nospam--at)psm-engineers.com>
- Date: Tue, 6 Jun 2006 09:44:46 -0700
How does the rod get embedded in the
beam? I'm picturing a 30' long drill bit and not seeing that work very
well. Is there a long slot along the bottom of the beam that gets cut out
and then patched??
solution is to stiffen and strengthen the existing beam assuming the original
beam bearing is adequate as stated. A method I have used in the past is to add
tension rods to the beam imbedded with an adhesive designed for that purpose.
I have used it to repair rotted cantilevered deck beams all from the outside
and avoided having to replace the entire beam and disturbing the interior of
the building: this particular problem could be solved by adding the tension
rods to the bottom of the existing beam. This is analogous to rebar in a
concrete beam. A company in England called Rotafix developed this scheme and
has been using it for several decades in Europe and Canada, according to their
web site. I have specified their adhesive and procedures in four projects two
of which have been completed (and tested by the way).
O. Laines, S.E.