Fillet Weld Throat Area Equations and Calculation

Weld Design Menu

Fillet Weld Throat Area Equations and Calculation, full length weld and Active Load bearing area.

Weld

Throat Area of Fillet Weld A [mm2, in2]
Full Weld Length

Linear Weld

Weld Area 1

L Weld

Weld Area 2

Vertical Weld

Weld Area 3

Horizontal weld

Weld Area 3

C Weld Weld Area 4
Rotated C Weld Weld Area 5
Rectangle Weld Weld Area 6
Circle Weld Weld Area 7
I Weld Weld Area 8
Continuos Weld Weld Area 9
H Weld Weld Area 10
Continuos H Weld Weld Area 11
T Weld Weld Area 12
Continuos T Weld Weld Area 13
Arrow Weld Weld Area 14

 

Weld

Throat Area of Fillet Weld A [mm2, in2]
Active Load-bearing Length

Linear Weld

Active Load-bearing Length 1

L Weld

Active Load-bearing Length 2

Vertical Weld

Active Load-bearing Length 3

Horizontal weld

Active Load-bearing Length 4
C Weld Active Load-bearing Length 5
Rotated C Weld Active Load-bearing Length 6
Rectangle Weld -
Circle Weld -
I Weld Active Load-bearing Length 7
Continuos Weld -
H Weld Active Load-bearing Length 8
Continuos H Weld -
T Weld Active Load-bearing Length 9
Continuos T Weld -
Arrow Weld Active Load-bearing Length 10

 

Where:

A

= Throat area of fillet weld [mm2, in2]

B

= Width of weld [mm, in]
s = Web thickness [mm, in]
L = Length of weld [mm, in] 
r = Weld radius [mm, in]
t = Flange thickness [mm, in]
H = Height of fillet weld [mm, in]
a = Fillet weld cross sectional area

Where:

a = Z2/2

Weld Area