Geometric Dimensioning and Tolerancing

ASME Y14.5 (2009) provides the standards for Geometric dimensioning and tolerancing (GD&T).

ASME Y14.41 contains additional requirements for tolerances defined in digital models.

SpaceClaim provides functionality for GD&T symbol creation based on this standard.

Help topics for symbol creation focus on functionality and workflow only.

For help with terminology, interpreting GD&T symbols, and understanding the motivations behind them, refer to ASME Y14.5 (2009) and related publications.

You can create both Encoded GD&T and GD&T Annotations.

GD&T Annotations:

• Simply annotations using GD&T symbols and tolerance values
• You manually build them up by selecting the symbols, entering values, and adding leaders

Encoded GD&T:

• Built into the model using geometric references.
• Contain logic based on the ASME Y14.5 (2009) standard
• Creation workflow assists in building the symbol
• Only geometry applicable to the selected characteristic symbol is selectable
• Tool guides step you through symbol creation
• Update according to geometry changes
• If changes cause symbols to become invalid they are flagged in the Structure Tree