Design Fillet Welded Connection:
Allowable stress in weld = 150 MPa
Throat thickness of 5 mm weld = 0.7 × 5 = 3.5 mm
Strength of weld per mm length = 150 × 3.5 = 525 N
∴ Length of weld = 250000/525 = 476 mm
Force resisted by lower corner weld
= 250000 × (150 - 42.4)/150 = 179333 N
∴ Length of lower corner weld = 179333/525 = 342 mm.
∴ Length of top edge weld = 476 - 342 = 134 mm.
(a) Riveted Tension Member
(b) Welded Tension Member
Figure