ISA 100 × 100 × 10 mm (Cross sectional area = 1908 mm2)

ISA 100 × 100 × 10 mm (Cross sectional area = 1908 mm²) is welded along A and B, such that the lengths of the woeld along A and B are l₁ and l₂, respectively. Which of the following is a possibly acceptable combination of l₁ and l₂.

1. l₁ = 60 mm and l₂ = 150 mm
2. l₁ = 150 mm and l₂ = 60 mm
3. l₁ = 150 mm and l₂ = 150 mm
4. Any of the above, depending on the size of the weld.

For no eccentricity, the algebraic sum of moments of two welds about centre of gravity must be zero. C.G is B, thus l₂ must be more than l₁