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RE: Light Gage Steel Connection

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Richard,

I would specify a self-drilling, self-tapping screw such as TEKS by
ITWBuildex; Hilti, and probably others, makes a similar product.  These are
quickly made connections.  Be sure your specification is for a specific
screw with drill-point length great enough to complete the drilling before
the threads engage, or the connection will be ruined.  Install with the head
of the screw bearing against the light gage material so that you have, in
effect, a bolted connection -- instead of a nutted bolt, the threads are
tapped into the structural steel member.  The connection can be designed as
a bolt using the AISI "Specification for the Design of Cold-formed Steel
Structural Members"

Nels Roselund, SE
South San Gabriel, CA
njineer(--nospam--at)att.net

-----Original Message-----
From: richard lewis [mailto:rlewistx(--nospam--at)juno.com] 
Sent: Wednesday, November 17, 2004 11:04 AM
To: seaint(--nospam--at)seaint.org
Subject: Light Gage Steel Connection

Here is a question for those who do a lot of light gage steel design.  I
have an edge angle that I want to attach metal studs to support a wall.
the angle will be the vertical support for the stud wall.   The back face
of the stud will attach to the vertical face of the angle.  I know I can
weld them but I was wondering about screwing them.  Is it common to use a
self-tapping TEK screw to attach them?  Would the screw be installed from
the stud side?  Is it easy enough for the installer to bend the stud
flange and screw into the back flange and the steel angle?  Any minimum
size TEK screw suggested?

Thanks.

Rich

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