AWS D1.1, AWS D1.5 WPS PROCEDURE ?

By GARY MATHISON Date 05-02-2002 17:52

I HAVE A WPS USING A FULL PEN BACKGOUGED FCAW PRE-QUALIFIED JOINT "B-U3-GF" PER FIG. 2.4. IN LIEU OF DETAILING A (0 TO 1/8") ROOT FACE I HAVE SHOWN A 1/4" ROOT FACE.
PER TABLE 5.3 (ESSENTAIL VARIABLE CHANGES) PART 30)c. "AN INCREASE IN ROOT FACE WHICH WILL NOT BE SUBSEQUENTLY REMOVED BY BACKGOUGING." I AM BACKGOUGING TO SOUND METAL , SO I BELIEVE I STILL CAN USE THE PRE QUALIFIED JOINT AND DO NOT HAVE TO RUN A JOINT DESIGN PROCEDURE. IS THIS A TRUE INTERPRETATION OF THE CODE?
CAN I DETAIL MY WELD PREP.WITH THIS 1/4" ROOT FACE?

By kpauley (*)

Date 05-02-2002 20:54

Yes. If you'll notice under "Tolerances" "As Fit-up", it states that "f" dimension is "Not Limited" because you must "backgouge to sound metal before welding second side". So therefore you will remove all of the root face that has not been fused with the weld metal.

By GARY MATHISON Date 05-02-2002 22:15

THANK YOU ON YOUR QUICK RESPONCE.
THIS IS ON A CAL-TRANS BRIDGE PROJECT.
THEY HAVE AGREED WITH THE FIT-UP TOLERANCE BUT HAS INSISTED THAT THE DETAIL OF THE JOINT AND THE PREP. OF THE PLATE MUST BE 0 TO 1/8" +1/16, -0
I DISAGREE WITH THIS AND BELIEVE I CAN DETAIL AND PREP.THE PLATE WITH A 1/4" NOSE.
WHAT DO YOU THINK?