1. Weld Joint Geometry and Weld Symbols
Parts of a Weld Joint
Welding Technology
Lee Co. ATC
Graphics compliments of AWS

2. Submitted by Craig Herald
Welding Instructor
Lee County Area Technology Center
To the AWS Welding Educator’s
Electronic File Library
Graphics provided compliments of the American Welding Society Education Department

3. It may be necessary to describe the exact joint design
Once you can identify the types of joints, you must be able to identify individual features that make up the joint geometry for a particular joint
These features and elements are often essential variables in welding procedure, as well as production welding
Welding personal may required to apply this knowledge once in the industry

4. Parts of a weld Joint root Groove face Root face Root edge
Root opening
Bevel
Bevel angle
Groove angle
Groove radius

5. Joint root is “ that portion of a joint to be welded where the members are closest to each other
The joint root may be either a point, line, or an area
The joint roots are shown as shaded areas in (A)-(D) and lines in (E) (F)

6. Groove Face, Root Face, and Root Edge
Groove face is “ that surface of a member included in the groove”
Root face (land) is “that portion of the groove face within the joint root”
Root edge is a root face of zero width

7. Root Opening and Bevel
Root opening is the separation between the work pieces at the joint root
Bevel (chamfer) is an angular edge preparation

8. Bevel Angle, Groove Angle, and Groove Radius
Bevel angle is the angle between the bevel of a joint member and a plane perpendicular to the surface of the member
Groove angle the total included angle of the groove between members
Groove radius applies only to J-&U- groove welds

9. Extra information is necessary to describe the exact joint design
For a single-bevel-groove-weld, the bevel angle and the groove angle are equal
Groove radius is “the radius used to form the shape of a J- or U- groove weld.” Normally the weld configuration is specified by both an angle and a radius