Fillet Weld Parts
The point where the weld face meets the base metal.
Toe
This term refers to the measurement of a fillet weld along the joint in the direction of welding
Fillet Weld Length
This part of a groove weld is the extra weld metal that extends beyond the surface of the base metal.
Reinforcement
This angle is formed between the prepared edge of a single member and a line perpendicular to the surface of that member.
Bevel Angle
This groove weld type has no edge preparation and is formed by placing two members squarely together.
Square Groove
The distance from the root of the joint to the toe of the weld, measured along the base metal surfaces.
Leg
This type of intermittent fillet weld is shown on a welding symbol by placing weld segments off-set on both sides of the reference line.
Stagger Intermittent Fillet Weld
This term refers to the shortest distance from the weld root to the face of the groove weld, excluding reinforcement.
Effective Throat
This angle is the total included angle between the prepared edges of both members in a groove joint.
Groove Angle
This groove weld type uses a single angled edge preparation on one member of the joint.
Bevel Groove
The exposed surface of the weld between the toes.
Face
A weld made in a series of short segments with spaces between them instead of one continuous weld.
Intermittent Fillet Weld
This feature occurs when weld metal penetrates through the joint and is visible on the opposite side.
Melt Through
This term refers to the separation between the two members at the root of the joint before welding.
Root Opening
This groove weld type has a curved edge preparation on one member.
J Groove
It is the deepest point of the weld, located opposite the face, and indicates the area of maximum penetration.
Root of the Weld
This part of a fillet weld symbol shows the leg size and is located to the left of the weld symbol on the reference line.
Leg Size
This is the point in a groove weld where the two pieces of base metal come together at the bottom of the joint.
Weld Root
This measurement indicates how deep the base metal is prepared for welding, usually by beveling or machining.
Depth of Preparation
This groove weld type features two beveled edges on opposite members, forming a V-shaped joint.
Double Vee Groove
The shortest distance from the root to the face of the weld, excluding reinforcement.
Effective Throat
On a fillet weld symbol, these two dimensions appear to the right of the weld symbol, with one indicating the weld length and the other its center-to-center spacing.
Length and pitch
These are the points where the weld face meets the base metal surfaces on either side of the joint.
Toes
This flat surface at the root of the joint, also called a landing, is left un-beveled to control penetration.
Root Face (Landing)
This groove weld type uses a curved edge preparation on both members.
U Groove