Which category of symbol is used to express that a weld is to be completed in the field?

Which category of symbol is used to express that a weld is to be completed in the field?

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

Answer: (B)

Field work information is attached as supplementary symbols because they modify the basic weld symbol with extra instructions. The basic symbol shows what weld to make and where, but it doesn’t specify where to perform it. A supplementary symbol carries additional requirements, such as that the weld must be done in the field, and is the standard way to convey that condition on the drawing. So indicating “weld to be completed in the field” is a matter of using a supplementary symbol. The other categories either describe the core weld representation or don’t specifically convey field work as an added requirement.

Field work information is attached as supplementary symbols because they modify the basic weld symbol with extra instructions. The basic symbol shows what weld to make and where, but it doesn’t specify where to perform it. A supplementary symbol carries additional requirements, such as that the weld must be done in the field, and is the standard way to convey that condition on the drawing. So indicating “weld to be completed in the field” is a matter of using a supplementary symbol. The other categories either describe the core weld representation or don’t specifically convey field work as an added requirement.