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Geometric dimensioning and tolerancing

ASMEAmerican Society of Mechanical Engineers standards for engineering drawing practices. You can customize the style of your annotations to conform to ASME standards. See ISOInternational Organization for Standardization standards for architectural and engineering drawing, including guidelines for dimensioning and tolerancing. You can customize the style of your annotations to conform to ISO standards. See ASME, JISJapanese Standards Association standards for technical drawings. You can customize the style of your annotations to conform to JIS standards. JIS defaults are the same as ISO, except that JIS uses third-angle views while ISO uses first-angle views. See ASME, ISO.., JIS 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 guidesFunctions that are specific to the selected tool. step you through symbol creation
• Update according to geometry changes
• If changes cause symbols to become invalid they are flagged in the Structure Tree