Prequalified Fillet Weld T-Joint in AWS D1.1

[weldguy86]

If I am making a fillet weld in a T-joint between two structural members that fall under AWS D1.1 requirements, can I use a pre-qualified WPS for the weld? There is no prequalified joint detail that shows a fillet weld like this. However, it looks to me like this would fall under 3.9 Fillet Weld Requirements and 3.9.1 for nontubular details. As long as you are staying within the limitations of Figures 2.1 and 2.4 and following the minimum fillet weld sizes of Table 5.8, all non-tubular fillet welds are prequalified, even though there arent any joint designs showing the fillet welded T-joint specifically. Does this sound correct?
Thanks for any help.

 

[connectegr]

You are correct, the fillet weld should fall withing Clause 3 - Prequalified. The AWS-SWPS's for many filler metals and processes include the wording "Fillet Welds: All Joints", but as you noted no detail is provided. If necessary you can develop a WPS for your condition, or purchase the SWPS from AWS. Possibly AWS will provide a fillet weld detail in the next edition.

http://www.FerrellEngineering.com

 

[gtaw]

Refer to clause 2.4.3 (D1.1-2010). The fillet weld is appropriate for T-joints where the angle between the members is more than 80 degrees, but less than 100 degrees.

Clause 3.9 address prequalified fillet welds. The requirements for the minimum fillet size must be met, i.e., Table 5.8. the size limitations for Figure 2.1 (lap joints apply). Skewed T-joint requirements / limitations of 3.9.3 directs the reader to Figure 3.11 depicts the limitation for welded skewed T-joints. Notice when the dihedral angle is less than 80 degrees the weld is no longer referred to as a fillet weld.

Best regards - Al