Table J2.5: (continued) Available Strength of Welded Joints, ksi (MPa)

FILLET WELDS INCLUDING FILLETS IN HOLES AND SLOTS AND SKewed T-JOINTS Shear: Base: Governed by J4 Weld: $\phi$ = 0.75 $\Omega$ = 2.00: $0.60F_{EXX}$[d] : See J2.2a : Filler metal with a strength level equal to or less than matching filler metal is permitted. Tension or compression—parallel to weld axis: Tension or compression in parts joined parallel to a weld is permitted to be neglected in design of welds joining the parts.

PLUG AND SLOT WELDS

Shear-parallel to faying surface on the effective area: Base: Governed by J4 Filler metal with a strength level equal to or less than matching filler metal is permitted.: Weld: $\phi = 0.75$: $\Omega = 2.00$: $0.60F_{EXX}$: See J2.3a

$F_{EXX}$ = filler metal classification strength, ksi (MPa) [a] For matching weld metal, see AWS D1.1/D1.1M, clause 5.6.1. [b] Filler metal with a strength level one strength level greater than matching is permitted. [c] Filler metals with a strength level less than matching are permitted to be used for CJP groove welds between the webs and flanges of built-up sections transferring shear loads, or in applications where high restraint is a concern. In these applications, the weld joint shall be detailed and the weld shall be designed using the thickness of the material as the effective throat, where $\phi$ = 0.80, $\Omega$ = 1.88, and 0.60$F_{EXX}$ is the nominal strength. [d] The provisions of Section J2.4(a) are also applicable.

• (b) For fillet weld groups concentrically loaded and consisting of elements with a uniform leg size that are oriented both longitudinally and transversely to the direction of applied load, the nominal strength, $R_{n}$, of the fillet weld group is permitted to be determined as

$R_n = 0.85 F_{nw} A_{wel} + 1.5 F_{nw} A_{wet}$ (J2-6)

where

$A_{wel} =$ effective area of longitudinally loaded fillet welds, $\mathrm{in.^{2}}$ $(\mathrm{mm^{2}})$ $A_{wet} =$ effective area of transversely loaded fillet welds, $\mathrm{in.^{2}}$ $(\mathrm{mm^{2}})$

User Note: The nominal strength of fillet welds groups consisting of elements that are oriented both longitudinally and transversely to the direction of applied load can also be calculated in accordance with Section J2.4(a) neglecting the directional strength increase.