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Re: Full Pen Weld at Channel

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My suggestion would be for you to just show a weld arrow/leader line then a reference line with no symbol and in the tail put CJP.  This will get you a Complete Joint Penetrating weld (i.e. old terminology for full pen weld) and leave the actual type of weld (i.e. square, single bevel, double bevel, etc.) up to the fabricator.  For instance, if your channel web is 3/8 inch or thinner you can get a CJP using a double square groove weld on a butt joint which does not require a lot of preparation.  If your channel has very thick flanges (not likely but possible) then the fabricator may want to go with a double bevel weld instead of a single.  The bottom line is that you should call out what you want as a final product and leave the details to the fabricator.  Either way you go, you should get a copy of the proposed welding procedure specification (WPS) for your review.  CJP welds can always be ground flush but you would have to call this out with a bar symbol and the letter G over it.

Thomas Hunt, S.E.

"Joseph R. Grill" <jrgrill(--nospam--at)>
10/13/2008 08:02 AM
Please respond to seaint
Full Pen Weld at Channel

For you steel fabricating welding gurus  out there, I am looking a stair stringer that is cantilevered and requires a full pen weld at the joint from the sloped portion of the stringer to the horizontal landing.  I think the B-U2 groove weld would be the way to go as there is no requirement for weld tabs.  It appears that it can be used at the flanges with the angle and the base metal thickness is unlimited.
Is this what is customarily called for on a full pen weld on a stair stringer or something else?  If this is acceptable, can the near side and far side be ground  flush?
Joseph R. Grill, PE
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