Which elements are part of a basic fillet weld symbol on a drawing, and what does it indicate?

Which elements are part of a basic fillet weld symbol on a drawing, and what does it indicate?

• A. Reference line only; length.
• B. Arrow and tail; material type.
• C. Reference line, arrow, and weld symbols; size and location relative to joint.
• D. Weld symbol alone; welding process.

Answer: (C)

The basic fillet weld symbol on a drawing communicates where to weld, what type of weld to make, and how big it should be. The essential elements are the reference line, the arrow pointing to the joint, and the weld symbol itself that indicates a fillet weld. The size (for a fillet, the leg length or throat) is shown next to the symbol, telling you how big the weld must be. The location relative to the joint is determined by which side of the reference line the symbol sits on (and its position above or below), so you know exactly which joint surfaces get welded. Tail notes can add process or special requirements, but for a basic fillet weld, the combination of the reference line, the arrow, and the weld symbol, plus the size indication, conveys both where the weld goes and how large it should be.

The basic fillet weld symbol on a drawing communicates where to weld, what type of weld to make, and how big it should be. The essential elements are the reference line, the arrow pointing to the joint, and the weld symbol itself that indicates a fillet weld. The size (for a fillet, the leg length or throat) is shown next to the symbol, telling you how big the weld must be. The location relative to the joint is determined by which side of the reference line the symbol sits on (and its position above or below), so you know exactly which joint surfaces get welded. Tail notes can add process or special requirements, but for a basic fillet weld, the combination of the reference line, the arrow, and the weld symbol, plus the size indication, conveys both where the weld goes and how large it should be.