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Re: steel studs on columns?

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Me too. I visited a pipe valve shop once and had my eyes opened by the quality of the welds on the fittings, all from one side. On the other hand, on one of my jobs, the contractor got a cheap price from an ASME qualfied shop to do some structural work which is not allowed in Canada unless they have also been approved by the Canadian Welding Bureau for structural welding ( they weren't). A lot of the welds were terrible and they had no idea of what structural connections were required. Needless to say I kicked them off the job, despite great howls of protest-"we have been welding X number of years". They just weren't qualified or approved for structural.
This is not to knock them as pipe welders, just to say "to each his own".

Harold Sprague wrote:
Your uncle belongs to a class of welders held in high regard among those who make sparks. Pipers and millwrights can weld much better than structural welders. The root weld on pipe is a gap in a bevel weld that has no backer. The welder moves his arc back and forth with no backing and his weld is a vertical weld transferring to an overhead weld and the transferring to a down weld. If any of my structural welding friends gets a little too confident, I challenge them to weld some pipe. I certainly know my place and would never even try making a piping weld. I am not worthy.
Harold Sprague

    From: akester(--nospam--at)
    To: seaint(--nospam--at)
    Subject: steel studs on columns?
    Date: Wed, 23 Jan 2008 12:27:45 -0500

    While flying up to watch my poor Packers lose this last weekend, I
    saw some new steel framing at the Orlando Airport that made me
    curious. It looks to be a two story steel frame, perhaps moment
    frame on the second story to roof level. On the first story level,
    the wide flange columns had steel studs welded to them at maybe
    12" o.c. to at least two sides of column. This appeared to be at a
    corner column. My only guess is they are going to tie into the
    column with a concrete tie column or wall and use a CMU or
    concrete wall for lateral bracing on the first floor. But I would
    think if this were the case the top few studs would see all of the
    force, that the column would not be stiff enough to transfer all
    of the force into the wall element very evenly.
And per all of that talk on field welding... Talking with my
    uncle, a retired steam fitter, they weld huge steel pipes together
    with butt splice complete joint penetration bevel welds, in the
    middle of a Wisconsin winter, all of the time... These pipes carry
    water and steam and may not have the stress in them that a wide
    flange butt welded will have, but I think as structural engineers
    we don't have to be so scared of field welding if it is really
    necessary! (Though may avoid it when it is not necessary due to
Andrew Andrew Kester, PE
    Principal/Project Manager
    ADK Structural Engineering, PLLC
    1510 E Colonial Ave., Suite 301
    Orlando, FL 32803

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