Fillet Weld Capacity
The calculation below determines the capacity of a fillet weld per CSA S16
Output:
- Definitions
- ϕw = Resistance factor for welds
- Fu = Ultimate strength of base metal (ksi)
- Xu = Ultimate strength of electrode (ksi)
- Dw = Fillet weld leg size (in)
- Lw = Weld length (in)
- θ1 = Angle between longitudinal axis of weld and line of action of applied force (deg)
- θ2 = Orientation of weld closest to 90deg, in a multi-orientation weld (deg)
- Mw = Strength reduction factor for multi-orientation welds
- Aw = Area of effective weld throat (in2)
- Am = Area of effective fusion face (in2)
- Shear capacity of base metal
- Vr,base = 0.67 ϕw Am Fu
- where Am = Dw Lw = 1.5
- Vr,base = 0.67 (0.67) (0.25*6) (65)
- Vr,base = 43.77 kip
- Shear capacity of weld metal
- Vr,weld = 0.67 ϕw Aw Xu (1.00+0.5sin(θ1)^1.5) Mw
- where Mw = (0.85 + θ1/600)/(0.85+θ2/600) = 1
- where Aw = Lw Dw / √2 = 1.061
- Vr,weld = 0.67 (0.67) (0.25*6 / 1.414) (71) (1.5) (1)
- Vr,weld = 50.72 kip
- Result
- Vr = min(Vr,base, Vr,weld)
- Vr = min(43.77, 50.72)
- Vr = 43.77 kip
Notes: