What is the title of the book by Vulcraft? Is it still in print?
"Sprague, Harold O." wrote:
> This is a fairly common approach for the wind world, and a bit more risky in
> the high seismic world (not impossible, but more risky). Vulcraft has done
> this many times. They even have a book on the topic.
> The TS wall problem is solved by using a WT out of the AISC Manual or
> fabricating a WT out of plates. That way you make the wall whatever
> thickness and length you need. You should also check the side walls for
> local buckling. I have had occasion where I reinforced all 4 walls of a
> column at the bottom chord connection point.
> There are many issues that require close coordination with the joist girder
> supplier. They will require a bigger bottom chord and the first couple
> diagonals will increase. They will also require bracing at the first bottom
> chord panel point.
> You may also want to require the erection bracing to remain until the
> roofing has been placed. It is best to get as much gravity load in place
> prior to welding the bottom chord to the column. That way the fixed end
> moments due to gravity load are limited to LL and lateral load only.
> Harold Sprague
> > -----Original Message-----
> > From: Michael Zaitz [SMTP:mzaitz(--nospam--at)hgbd.com]
> > Sent: Tuesday, June 27, 2000 3:21 PM
> > To: seaint(--nospam--at)seaint.org
> > Subject: Joist Girder Connections to Tubes
> > Hello
> > 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)?
> > Mike