456A Blueprint Reading, Weld Symbols & Joint Preparation

Question 1

On a weld symbol, on which side of the reference line is a weld symbol placed to indicate the 'arrow side' of the joint?

Accepted Answer

Below the reference line

Answer

Above the reference line

Answer

To the left of the reference line

Answer

Inside a flag on the reference line

Question 2

What does a weld symbol with a circle at the junction of the arrow and reference line indicate?

Accepted Answer

Weld all around the joint

Answer

The weld is to be made in the field (site weld)

Answer

The weld is a complete joint penetration weld

Answer

The weld must be visually inspected after completion

Question 3

What does a filled (solid) flag at the junction of the reference line and arrow indicate on a weld symbol?

Accepted Answer

Field weld — the weld is to be made at the installation site, not in the fabrication shop

Answer

The weld requires NDT inspection

Answer

Complete joint penetration is required

Answer

The weld is to be made on both sides simultaneously

Question 4

On a fillet weld symbol, where is the weld size (leg length) shown?

Accepted Answer

To the left of the weld symbol

Answer

To the right of the weld symbol (after the symbol)

Answer

Above the reference line always

Answer

Inside the triangle of the fillet symbol

Question 5

What is the meaning of the number in parentheses on a groove weld symbol, such as a V-groove with (5) written in it?

Accepted Answer

The root opening (gap between the parts) in millimetres

Answer

The groove angle in degrees

Answer

The required penetration depth in millimetres

Answer

The number of weld passes required

Question 6

What does 'CJP' written on a weld symbol in a drawing note indicate?

Accepted Answer

Complete Joint Penetration — the weld must fuse through the full thickness of the joint

Answer

Centre Joint Position — the weld is made from the centre outward

Answer

Cold Joint Prevention — preheat is required

Answer

Certified Joint Procedure — a qualified WPS must be used