Question

When plates of two different thicknesses and/or widths are joined, the wider or thicker part should be reduced at the butt joint to make __________

(a) thickness less than smaller part, the slope being steeper than one in five

(b) thickness greater than smaller part, the slope being steeper than one in five

(c) thickness equal to smaller part, the slope not being steeper than one in five

(d) thickness equal to smaller part, the slope being steeper than one in five

I have been asked this question in final exam.

The above asked question is from Weld Defects & Types of Joints topic in section Welded Connections of Design of Steel Structures

Answer 1

The correct option is (c) thickness equal to smaller part, the slope not being steeper than one in five

Easiest explanation: When plates of two different thicknesses and/or widths are joined, the wider or thicker part should be reduced at the butt joint to make thickness equal to smaller part, the slope not being steeper than one in five. When reduction is not possible, the weld metal shall be built up at the junction with thicker part to dimensions at least 25% greater than those of thinner part, or alternatively to the dimensions of thicker member.