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Re: Joist Girder Connections to Tubes

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Thanks to all who responded.

Mike

MKnight wrote:

> If your connecting to the face of a structural tube there is a product
> called a Hollo-Bolt available for Lindapter NA in Ann Arbor. It is basically
> a steel anchor which fits inside a hole drilled into the tube face. You can
> fasten from the outside face with a couple of wrenches. More info is
> available on http://www.lindapter.com
>
> > -----Original Message-----
> > From: Roger Turk [SMTP:73527.1356(--nospam--at)compuserve.com]
> > Sent: Tuesday, June 27, 2000 10:29 PM
> > To:   seaint(--nospam--at)seaint.org
> > Subject:      Joist Girder Connections to Tubes
> >
> > Mike,
> >
> > I, for one, avoid connecting to the face of a tube under any circumstance
> > ---
> > there is just too much opportunity for oil canning.
> >
> > I don't know how clear the following illustration will come out, but here
> > it
> > is:
> >
> >    |      |<-----Face of Tube
> >    |      |
> >    |   --------
> >    |  |        |<-----Plates welded on each side of tube
> >    |  |        |
> >    |  |        |
> >    |   ----==== <-----Plate welded across side plates
> >    |      |
> >    |      |
> >
> > Separately provide a loose "T"-shaped device that can be dropped in
> > between
> > the bottom chord angles and field welded to the bottom chord, the bottom
> > plate shown above and to the tops of the two side plates.
> >
> > Hope this helps.
> >
> > A. Roger Turk, P.E.(Structural)
> > Tucson, Arizona
> >
> > Michael Zaitz wrote:
> >
> > >>I have a project where, due to the schedule, it is desired to use TS10 x
> > 10
> > x 5/16 columns.  The problem is that I have joist girders that I am using
> > for
> > frame action and therefore will have a concentrated load at my "stabilizer
> > plate".  After performing the calc's for the tube from the black book
> > (Hollow
> > Structural Sections manual) the tube walls are not thick enough for my
> > concentrated load using a vertical plate (to get it to work would require
> > a
> > 26"
> > plate).  Has anyone else ran into this problem?  What other methods are
> > there
> > for connecting the bottom chord?  Last, is there any concern for the joist
> > girder bottom chord for using an angle or plate horizontally instead of
> > vertically (I am going to call Vulcraft on this)?<<
> >
>