TS ISO 13715

TS ISO 13715 is a technical drawing standard that combines vocabulary with rules for indicating edges of undefined shape. In practice, an edge may not be fully specified by a single exact geometry: it can include burrs, breaks, chamfers, rounding, or other as-produced edge conditions. This standard helps drawings express those edge states in a consistent and readable way.

Why edge terminology matters

In engineering documentation, an edge is not just a line on paper; it may describe how a part is actually made, finished, inspected, or accepted. General technical context shows that undefined edge shape is especially relevant in machined, cast, pressed, and otherwise finished parts, where the real edge condition may differ from an ideal sharp intersection. A shared vocabulary reduces ambiguity between design intent and manufacturing interpretation.

How the drawing indication works with the vocabulary

According to its scope, the standard covers the definitions of terms related to edge states and the rules for representing edges of undefined shape in technical drawings. Its value lies in linking terminology to graphical indication, so that an edge condition can be communicated clearly without overloading the drawing with unnecessary geometric detail. It fits into the broader technical drawing system alongside other ISO drawing conventions used for line work, dimensions, and lettering.

• Defines terminology for edge conditions.
• Specifies how undefined edge states are indicated in technical drawings.
• Supports consistent interpretation across design, manufacturing, and inspection.
• Works in the context of the wider technical drawing standards framework.