VCPD734 - ASME Y14.5 GD&T Fundamentals Training (Virtual Classroom) has been added to your cart.

ASME Y14.5 GD&T Fundamentals Training (Virtual Classroom)

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Read and create engineering drawings and interpret design intent per ASME Y14.5 - Geometric Dimensioning and Tolerancing (GD&T).

This Standard was last reviewed and reaffirmed in {{activeProduct.ReaffirmationYear}}. Therefore this version remains in effect.

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This course is specifically scheduled in a European-friendly time zone to address international demand. It commences at 9:30 and ends at 18:00 (GMT +00:00) UTC each day, with scheduled breaks throughout.


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This course is a 3-day immersion into the rules, symbols, and other concepts of the American Standard for Geometric Dimensioning & Tolerancing: ASME Y14.5-2018.  The course also covers important differences between older versions of the standard and the current ISO GD&T Standards.  Key fundamental rules, all control symbols, datums and datum schemes, basic dimensions, virtual conditions, modifiers, and the infamous Rule #1 are all covered in detail.
This course includes a variety of examples and short exercises that will help you progressively learn more about this unique design language. Participants will work through various exercises and have the opportunity to review engineering drawings during the course.
By participating in this course, you will learn how to successfully:

  • Describe the tolerance zones defined by each symbol.
  • Determine when to use Rule #1 to control form and when other controls are appropriate.
  • Recognize correct syntax for feature control frames.
  • Relate common gauging and inspection methods to geometric tolerance zones defined by feature control frames.
  • Correctly apply and interpret the Maximum Material Condition (MMC), Least Material Condition (LMC), and other modifiers.
  • Assess various datums and datum schemes against product functionality and manufacturing and inspection performance.
  • Recognize the need for product-specific GD&T guidelines and list the steps required to create them.

Who should attend?
You should have some familiarity with engineering drawings, but you do not need any previous GD&T experience. Many participants looking for advanced classes discover that their GD&T skills are challenged by the fast pace and in-depth coverage of our fundamentals course. Come prepared to work hard and learn a lot, even if it's not your first time through a GD&T class.
Course Materials (included in purchase of course)

  • Digital course notes via ASME’s Learning Platform

Detailed Outline


  • GD&T defined: Size, Form, Orientation, and Location (SFOL) — What we want and what we will take.
  • Three boxes for GD&T: Feature Control Frames (FCFs), Datum Feature Identification (DFI) symbols, basic dimensions.
  • Exercise: Control symbols, names, and feature control frame examples.
  • Modifiers: Free State, Statistical Tolerance (ST), Continuous Feature (CF), and others
  • Exercise debrief: Overview of everything

Features of Size vs. Surfaces (Big Map of the GD&T World)

  • Size defined
  • Feature of size defined
  • MMC
  • Rule #1
  • Exercises & debrief

Controlling Surface Form

  • Flatness & Straightness
  • Cylindricity & Roundness
  • Profile of a Surface as a Form Control
  • Exercises (Homework)
  • Surface form exercise debrief


  • Terminology: datums, datum features, fixtures, and gages
  • FOS datums
  • MMC: Shift happens
  • Regardless of Material Boundary (RMB): No shift
  • Patterns of features used as a datum
  • Exercises and applications
  • Selecting datums
  • Simulating datums
  • Exercises & debrief

Controlling Surface Orientation

  • Perpendicularity
  • Angularity
  • Parallelism
  • Tangent Plane Modifier
  • Exercises & debrief

Profile of a Surface as an Orientation Control

  • Referencing Datums
  • Controlling size, SFOL
  • Composite vs. Two Single-Segment
  • Dynamic profile modifier
  • Debrief FOS


  • Position
  • Runout
  • Concentricity & Symmetry-Legacy controls. How to get along without them?

Applications using customer drawings (highly recommended!)

  • Review
  • Post-test
  • Other resources
  • ASME Certification info

John Stolter

President, Stolter LLC

John brings to each class significant manufacturing engineering and design engineering experience, coupled with a unique ability to explain the role dimensioning and tolerancing plays in the product development process.

John-Paul Belanger, GDTP-S

President, Geometric Learning Systems

John-Paul Belanger is an internationally recognized instructor and consultant in geometric dimensioning and tolerancing.

Jim Beary, GDTP-S, PMP

Technical Expert and Trainer, GE Appliances, a Haier Company

Jim Beary is a Technical Expert and Instructor of GD&T, Dimensional Management, and Functional Gaging and Inspection

More Information


Virtual Classroom

Live course with an instructor and peers held in an online learning environment with digital enhancements and online materials.
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