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ETI Professional Development Seminars

Applications of GD&T 1994 & 2009 2-Day
(Based on Y14.5M-1994 & Y14.5-2009)

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ID# ET2512
1.3 CEUs

Providing you have an understanding of GD&T fundamentals, this course teaches the thought processes involved in assigning GD&T to components. It will change the way many engineers think about part tolerancing.

Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, the course focuses on what constitutes good and poor drawing practices, common dimensioning methods used in industry, using GD&T to communicate system functions on component dimensions, and the logic of how to apply GD&T to components.

Newly acquired learning is reinforced when students perform a design function analysis on a part assembly provided by your company, then specify GD&T on assembly components during the workshop. (This is optional in case of concerns over drawings and privacy.)

  • What You Receive
  • Learning Objectives
  • Who Should Attend
  • Topical Outline

Each attendee receives a robust collection of learning resources including:

  • A copy of Applications of GD&T Workshop Exercise Workbook, by Alex Krulikowski
  • Course notes
  • Drawing handouts
  • Official certificate of completion

Thousands of students have learned GD&T through Alex Krulikowski’s textbooks, self-study courses, computer-based training, and online learning center. Students who attend courses like this one walk away with more than knowledge. They gain on-the-job skills because the learning materials are performance-based.

By attending this class, you will learn how to do a design functional analysis on an assembly and use this information to assign dimensions and tolerances. They will also learn how to select datum features and how to fully define component surfaces using GD&T. Establishing tolerance values is not covered. Small groups (8-12) are most effective in this workshop. The students will work in teams and actually create GD&T tolerance mark-ups of their company parts in the workshop.

By attending this class, you will be able to:

  • Describe the importance of technically correct drawings
  • List three major areas that affect the creation and interpretation of technically correct drawings
  • Explain the common approaches to part tolerancing
  • Identify and specify datum features based on the fit and functional requirements of the part
  • Use GD&T to communicate functional requirements of a component
  • Describe how to specify nonfunctional dimensions
  • Explain the five-step approach to functionally dimensioning a component
  • Apply the five-step method to functionally dimensioning a component to your company product

Who Should Attend
This course is designed for product engineers, designers, checkers, and engineering managers, and supplier quality engineers.

Please be aware that this is not an introductory course. In order to understand the course content, students should have complete 16 hours of formalized classroom training in GD&T or ETI’s Fundamentals of GD&T course. You should also have experience interpreting or applying GD&T in an industrial setting and working knowledge of the ASME Y14.5-2009 Standard.

Topical Outline


Importance of Technically Correct Drawings

  • Engineering drawings
  • Purpose of drawings
  • Three common paradigms about drawings
  • Effects of a poor drawing
  • Benefits of a technically correct drawing

Three Areas that Affect the Creation and Interpretation of Engineering Drawings

  • Importance of standards
  • Three methods for creating drawings
  • How drawing creation affects interpretation
  • The six principles of dimensioning

Four Common Approaches to Part Tolerancing

  • Pros and cons of each dimensioning approach
  • Dimensioning approach to be used in this class

Selecting Datums

  • Why datum feature selection is controversial
  • Selecting datum features based on the functional approach
  • Mounting and performing datum features
  • Qualifying datum features

Using GD&T to Communicate Functional Requirements

  • Where to use a linear or geometric tolerance
  • Customer robust and customer sensitive dimensions
  • Where to use MMC, LMC, and RFS
  • Converting functional requirements into GD&T specifications

Specifying Nonfunctional Dimensions

  • What a nonfunctional dimension is
  • Risks of not tolerancing nonfunctional dimensions and using restrictive general tolerances
  • When to apply general or local tolerances
  • General tolerancing practices
  • Application requirements of general geometrical tolerances
  • Interpreting general tolerances


Understand the 5-Step Method to Functionally Dimension a Component

  • The functional dimensioning design philosophy
  • Advantages of functional dimensioning
  • How functional dimensioning supports the PDP
  • The principles of dimensioning and technically correct drawings

Applying the 5-Step Method to Functionally Dimension Components of a Customer’s Products

  • Review the functional dimensioning process and 5-step method
  • Review the DFA
  • Review when dimensioning compromises should be considered

Course summary, final learning assessment

Instructor(s): This course is taught by one of ETIís approved instructors, each of whom has been vetted and mentored by Alex Krulikowski.

ID# ET2512 - Applications of GD&T 1994 & 2009 2-Day - 1.3 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

Fee: Call for pricing

This seminar can be customized to meet the needs of your organization
For onsite workshop information — or to request a custom quote package — contact a GD&T account executive at 1-800-886-0909, email, or use our online training quote request form.


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This file last modified 06/12/14