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Up Topic American Welding Society Services / Technical Standards & Publications / prequalified WPSs for unequal thickness butt joints.
- - By BMS Date 06-17-2010 16:56
Do the prequalified WPSs in D1.1. fig. 3.4 apply for unequal thickness butt joints?  No reference to a "T2" makes me think not.
Parent - - By jwright650 (*****) Date 06-17-2010 17:40
See AWS D1.1:2008 2.16.1.1 and Figure 2.2(for cyclically loaded) and Figure 2.3(for statically loaded)..this addresses transitions between unequal thicknesses......to keep from haveing a notch(due to the sharp transition in thicknesses), you need to slope the transition between the two surfaces at 2.5 to 1.
Parent - - By welderbrent (*****) Date 06-17-2010 19:08
John,

That covers the 'How to do it' but it doesn't really answer the question. 

My thoughts are that the Section 3 pre-quals do cover it but I have never dealt with that so need to look at it closer unless someone else contributes from their knowledge base.

Have a Great Day,  Brent
Parent - - By jwright650 (*****) Date 06-17-2010 19:51
Brent, I would place the full-pen then add additional fillets as required to get the correct slope. All pre-qualified as far as I'm concerned as long as it adheres to Clause 3 materials, filler material, processes, positions, etc...etc...
Parent - - By ctacker (****) Date 06-17-2010 19:55
I would do (have done) the same also!
Parent - - By jwright650 (*****) Date 06-17-2010 20:03
Over in one bay of our shop....I have a truss being fabricated with a WT top chord that has a 3/4" thick web(stem), bottom chord is a WT with a 1/2" stem. The stringers(back to back angles) are welded to 1/2" plates that are welded full pen to that 3/4" WT stem. The full-pen is designed to only be as good as the thinnest material(1/2") so any additional filler material is only for blending the differences in the thickness.
Parent - - By welderbrent (*****) Date 06-18-2010 00:49
I guess I didn't really consider your answer properly.  I thought you had just skipped the question about the Clause 3 application and had sent him to the other info.  Sorry.

Should have done my followup reading before posting.

Have a Great Day,  Brent
Parent - By jwright650 (*****) Date 06-18-2010 11:05
No problem Brent...my answer was a quickee....was having a tough day here yesterday and didn't have time to elaborate when I posted.
Up Topic American Welding Society Services / Technical Standards & Publications / prequalified WPSs for unequal thickness butt joints.

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