Question

What is face reinforcement used in butt joint?

(a) It is extra weld metal that makes throat dimensions greater than the thickness of the welded material

(b) It is extra weld metal that makes the throat dimensions smaller than the thickness of the welded material

(c) It is extra weld metal that makes the throat dimensions equal to the thickness of the welded material

(d) It is parent metal makes that the throat dimensions smaller than the thickness of the welded material

This question was addressed to me during an interview.

My question is taken from Weld Defects & Types of Joints in chapter Welded Connections of Design of Steel Structures

Answer 1

The correct option is (a) It is extra weld metal that makes throat dimensions greater than the thickness of the welded material

To explain I would say: Face reinforcement is extra weld metal that makes the throat dimensions greater than the thickness of the welded material. The provision of reinforcement increases the efficiency of joint and ensures that depth of weld is at least equal to thickness of the plate.