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A butt weld joint is developed on steel plates having yield and ultimate tensile strength of 500 MPa and 700 MPa, respectively. the thickness of the plates is 8 mm and width is 20 mm. Improper selection of welding parameters caused an undercut of 3 mm depth along the weld. The maximum transverse tensile load (in kN) carrying capacity ofthe developed weld joint is
  1. 70

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Solution

The correct option is A 70
Pt=σt(ttundercut)L=700×(83)×20=700×100 N=70 kN

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