This session presents a methodical approach to tolerance stacks that involve geometric dimensioning and tolerancing (GD&T). Different GD&T symbols must be handled differently; some are bilateral, but some can be unilateral. Also discussed are virtual condition and resultant condition, two simple formulas to determine worst-case inner and outer locus when a position tolerance is invoked. A basic knowledge of geometric tolerancing is recommended, and also some familiarity with the basic two-column stack spreadsheet method. The target audience is design engineers, manufacturing engineers, and quality personnel who perform tolerance stacks. Many samples will be shown for the most common GD&T symbols.

At the end of this session, participants will be able to:
  • Determine which GD&T symbols need to be accounted for in a stack
  • Calculate virtual and resultant conditions
  • Factor tolerances of form, orientation, location, runout, and profile into a stack

Session Outline:
  • Brief review of GD&T
  • Virtual condition and resultant condition
  • Stacks using location (RFS) and runout
  • Stacks using profile tolerances
  • Stacks using form and orientation

Who Should Attend:
  • Manufacturing engineers
  • Product engineers
  • Designers
  • Quality personnel

Training Session Information
Date Presented:
April 23, 2013 2:00 PM Eastern
1 hour, 30 minutes
Tolerance Stacks: Stacks with GD&T
Speaker Information
John-Paul Belanger   [ view bio ]
Individual topic purchase: Selected
Recertification Credit : 1.00
This session is available as recertification credit for individuals who have earned a SME certification.
Preview Tolerance Stacks: Stacks with GD&TPreview Tolerance Stacks: Stacks with GD&T
SME Member Price: $89.00
Non-Member Price:$109.00