Chapter 20
Why Use GD&T?


Readers will learn:

1. How to convert a plus and minus toleranced part to a composite positional tolerance.

2. To interpret plus and minus tolerancing and its ambiguities.

3. To convert rectangular tolerance zones into cylindrical tolerance zones.

4. The advantages of specified datum features implied datum features.

5. How to calculate and test geometric tolerances for composite position controls.

6. How to calculate a minimum wall thickness.

7. How one position tolerance can function as well as two, but cost more.

8. How to apply and interpret composite positional tolerancing with three levels of control.

9. How to differentiate between features of similar size and configuration.

  • -Multiple Interpretations of Simple Plus and Minus Tolerances
  • -Converting from Plus and Minus to Composite Position Tolerancing
  • -Calculating the Position Tolerance for a Composite Position Control
  • -Minimum Wall Thickness Calculation for Composite Position Tolerances
  • -Composite Tolerancing for Coaxial Hole Patterns
  • -Minimum Wall Thickness Calculations for Coaxial Hole Patterns
  • -Composite Position Tolerancing with 3 Levels of Control
  • -Differentiating Between Features of Similar Size and Shape

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In