Introduction

This report uses data from existing research to calculate appropriate resistance factors for various welded joints using a first-order reliability analysis. The AISC Specification (AISC, 2022) is the primary basis for the analysis, however, design methods in the AISC Manual (AISC, 2023) and AWS D1.1 (AWS, 2020) were used where necessary. The following joint types were included in the analysis:

1. Concentrically loaded, normal strength fillet welds
a. Longitudinally loaded fillet welds
b. Transversely loaded fillet welds
c. Fillet welds with skewed load angles
d. Multi-orientation fillet weld groups
e. Welds with skewed dihedral angles
f. Single-sided fillet welds
2. Partial-joint-penetration (PJP) welds
a. Longitudinally loaded PJP welds
b. Transversely loaded PJP welds
3. Concentrically loaded, high strength fillet welds
a. High strength longitudinally loaded fillet welds
b. High strength transversely loaded fillet welds
4. Eccentrically loaded fillet weld joints

View PDF