Welding Drawings

Why welding drawings?

• Drawings are needed to share information with others involved in the project.– Owner– Architect and Engineer– Fabrication shop

• Estimators and Purchasing agents• Fitters• Welders• Inspectors

What are welding drawings?

• Drawings are the language of building and manufacturing.

• They are pictorially based and conform to accepted standards and symbols.

• Integrate job and company specific formats with national standard code symbols.

• Provides an expectedly consistent communication of ideas.

Typical Drawing

Materials correspond with numbers on drawing.

Typical drawing detail.

Welding symbols.

Different Views

• Welding symbols are built using a formula to place the different elements.

• When the symbol refers to only one member, the arrow will have a noticeable break and point to that member (Detail 1)

• Welding symbols may be combined either by adding different elements onto one reference line, or by adding more reference lines to the arrow (Details 2 & 3).

• When more reference lines are added, the operations on the line closest to the arrow are performed first, operations farthest from the line are performed last (Detail 3).

Frequently Used Symbol Elements For Structural

Welding

Symbol for Fillet Weld

Note the difference between “This Side”

and “Other Side”

Symbol for Fillet Weld

Symbol for Fillet Weld

Symbol for Butt Weld

Symbol for Butt Weld

Symbol for Butt Weld