CWI Welding Symbols and Drawing Interpretation (AWS A2.4)

Question 1

On a welding symbol, a weld symbol placed BELOW the reference line indicates that the weld is made on which side of the joint?

Accepted Answer

Arrow side

Answer

By AWS A2.4 convention, a weld symbol below the reference line applies to the arrow side of the joint. A symbol above the line applies to the other side.

Question 2

A fillet weld symbol is shown with the notation 3/16 to its left and 2-6 to its right. What does this call for?

Accepted Answer

3/16 in. leg size; 2 in. long welds spaced 6 in. center-to-center

Answer

The number to the left of the fillet symbol is the leg size. The right-hand notation gives the length first and the pitch (center-to-center spacing) second, so 2-6 means 2 in. segments on 6 in. centers.

Question 3

A flag at the junction of the reference line and the arrow on a welding symbol means the weld is to be:

Accepted Answer

Made in the field (at the erection site)

Answer

The field weld symbol is a flag at the reference line/arrow junction. It shows the weld is not made in the shop or at the initial place of construction.

Question 4

A small open circle at the junction of the reference line and the arrow of a welding symbol indicates:

Accepted Answer

A weld to be made all around the joint

Answer

The weld-all-around symbol is a circle at the arrow/reference line junction. It means the weld continues around the entire joint.

Question 5

Where on a welding symbol are the welding process, specification, or other supplementary notes normally placed?

Accepted Answer

In the tail of the symbol

Answer

The tail holds supplementary information such as the WPS number, process, specification, or notes. If no such information is needed, the tail can be omitted.

CWI Practice Test

CWI Practice Test

CWI Welding Symbols and Drawing Interpretation (AWS A2.4)