Blueprint Reading & Symbols Flashcards

What does a melt-through symbol look like on an AWS welding symbol?

Answer: A filled (solid) circle on the opposite side of the reference line

The melt-through symbol is a filled (solid black) circle placed on the opposite side of the reference line from the weld symbol.

On a blueprint, an isometric view is primarily used to:

Answer: Show a 3D representation of a part without true perspective distortion

Isometric drawings present a three-dimensional appearance using 30° angles from horizontal, making spatial relationships clear.

Which AWS welding symbol element specifies the contour to which a weld face should be finished?

Answer: A contour symbol (flat, convex, or concave) placed above or below the weld symbol

Contour symbols — flat (straight line), convex (arc up), or concave (arc down) — are placed on the weld symbol to specify the final weld face shape.

On a multi-view orthographic drawing, the right-side view is projected from which view?

Answer: Front view

In standard third-angle projection (used in the US), the right-side view is projected from the right side of the front view.

A welding symbol has a 'C' in the tail. What does this signify?

Answer: A specific welding procedure or specification code is referenced

Information in the tail of the welding symbol refers to a specification, process, or procedure — such as a WPS code.

What does a break (gap) in an arrow line on a welding symbol indicate?

Answer: The arrow points to the member that receives the prepared (grooved) side of the joint

A broken arrow line indicates that the arrow points specifically to the member that has the groove preparation (the beveled side).

On an engineering drawing, what does a section view reveal that a regular orthographic view does not?

Answer: Internal features and cross-sectional shapes of a part

A section view cuts through a part to expose internal geometry, showing features like holes, grooves, or wall thickness that are hidden in regular views.