Which label in a welding symbol communicates information intended for field work rather than fabrication?

Which label in a welding symbol communicates information intended for field work rather than fabrication?

• A. A secondary welding symbol
• B. A welding symbol
• C. A basic welding symbol
• D. A supplementary symbol

Answer: (D)

Supplementary symbols carry information beyond the basic weld geometry and are used to convey instructions that apply to field work rather than fabrication in a shop. They can indicate that a weld must be performed in the field, or other field-specific requirements like access, sequencing, or inspection needs. The basic welding symbol alone defines the weld type, size, and location, while the supplementary symbols add these extra, field-related details. The other terms refer to parts of the symbol that describe the weld itself or general symbol construction, not the field-specific instructions.

Supplementary symbols carry information beyond the basic weld geometry and are used to convey instructions that apply to field work rather than fabrication in a shop. They can indicate that a weld must be performed in the field, or other field-specific requirements like access, sequencing, or inspection needs. The basic welding symbol alone defines the weld type, size, and location, while the supplementary symbols add these extra, field-related details. The other terms refer to parts of the symbol that describe the weld itself or general symbol construction, not the field-specific instructions.