GD & T

Defining and Communicating Engineering Tolerances

Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models that explicitly describe nominal geometry and its allowable variation.


GD&T - Basic
Course as per ASME Y14.5-2018 Standard

Modules Covered
  • Conventional Dimensioning and Tolerancing Practices and its limitations
  • What is GD&T?
  • Why plus or minus tolerancing for location is not correct?
  • Fundamental rules
  • GD&T Basic terms
  • Datum reference frame
  • GD&T Symbology
  • Tolerance of Form, Orientation, Position, Profile and Run out
  • Modifiers or Supplementary symbols
  • Rule#1
  • Bonus Tolerance
  • Feature control frame
  • Selecting datum features
  • Application of tolerance on unit basis, RFS and Zero tolerance at MMC
  • MMC and LMC related positional tolerancing
  • Floating and fixed fastener assembly tolerance calculation
  • What is new in ASME Y14.5 -2018 Standard?


GD&T - Advanced
Concepts and Tolerance stack up analysis

Modules Covered
  • Brief review of GD& T requirements as per ASME Y14.5-2018 standard
  • Inner and outer boundaries
  • Virtual and Resultant condition
  • Methods of position tolerance verification
  • Composite a position tolerancing
  • Pattern Locating Tolerance Zone framework(PLTZF)
  • Feature Relating Tolerance Zone Framework(FRTZF)
  • Three segmented Position Tolerance
  • Tolerance stack up analysis
  • Tolerance analysis vs Tolerance allocation
  • Tolerance allocation by proportional scaling
  • Loop analysis
  • Tolerance analysis methods- worst case, RSS, MRSS and Monticarlo


Attractive Concession for students & Group Registration
For Enquires

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