Weld Symbols, Inspection & Codes
AWS weld symbols, fillet weld throat measurement, NDE methods, penetrant testing, WPS documentation, duty cycle, OFC flame settings, positional techniques, and 2023 RSOS exam alignment.
- Interpret AWS weld symbols using the reference line
- Measure fillet weld throat dimensions and understand tack welds
- Describe NDE methods including MT, PT, RT, and UT
- Explain WPS purpose and duty cycle calculations
- Select correct OFC flame settings and horizontal fillet electrode angles
- Describe the 2023 RSOS structure and how MWA D impacts exam preparation
Lección 1
AWS Weld Symbols & the Reference Line
The Welding Symbol System
The AWS welding symbol system communicates weld requirements on engineering drawings. Every welding symbol is built around a reference line - a horizontal line with an arrow pointing to the joint to be welded. Information placed below the reference line indicates a weld on the arrow side of the joint, while information above indicates a weld on the other side.
Arrow Side Placement
Weld symbols are placed on the bottom (below) the reference line to indicate a weld on the arrow side. This convention is fundamental to reading welding drawings correctly. The arrow points to the joint, and the side of the joint closest to the arrowhead is the arrow side. Understanding this rule is essential for proper joint preparation and weld placement.
Memory Aid
Below = Arrow side. Think of it as the symbol dropping down to point at the same side as the arrow.
Weld symbols placed below the reference line indicate a weld on the arrow side. Information above the reference line indicates the other side.