# Fundamentals of GD&T ASME Y14.5M 1994 - Advanced Level

This 3-day advanced-level Fundamentals of GD&T course is an in-depth study of the terms, rules, symbols, and concepts of geometric dimensioning and tolerancing as prescribed in the ASME Y14.5M-1994 Standard. The course can be conducted in three 8-hour sessions or with flexible scheduling including five mornings or five afternoons.

This class includes all the content from the Fundamentals of GD&T 2-day foundational course: an explanation of geometric symbols, including each symbol’s requirements, tolerance zones, and limitations. It compares GD&T to coordinate tolerancing, and explains tolerance zones; Rules #1 and #2; form and orientation controls; tolerance of position; runout and profile controls. Newly acquired learning is reinforced throughout the class with more than 100 practice problems using industrial drawings.

This in-depth, advance-level course also covers
• More detailed discussion of terms, concepts, and symbols used in GD&T
• Using tolerances on CAD models
• Discussions of verification principles for each geometric tolerance
• Related and unrelated actual mating envelope
• Functional and cartoon gages
• Examples of inspection methods for each geometric tolerance
• Critical thinking discussion
• 50 additional practice problems using industrial drawings

Newly acquired learning is reinforced throughout the class with more than 150 practice exercises.

• The Fundamentals of GD&T (ASME Y14.5M-1994) textbook by Alex Krulikowski
• GD&T Ultimate Pocket Guide (1994)
• A GD&T Workbook with Engineering Drawings (1994)

This course provides a complete look at GD&T Fundamentals. For more complex GD&T topics, like the expanded use of composite position and profile tolerances, customized datum reference frames, the translation modifier, and applying GD&T to non-rigid parts, see our Advanced Concepts of GD&T course.

## What Will You Learn

By attending this class, you will be able to:
• Describe engineering drawings: importance, drawing conventions, dimensions and tolerances, standards*
• Describe what dimensioning and tolerancing is
• Explain why geometric tolerancing is superior to coordinate tolerancing*
• Describe the key terms used in geometric tolerancing
• Recognize the modifiers and symbols used in GD&T
• Explain the rules used in GD&T
• Describe the concepts of basic dimensions, worst-case boundary, virtual condition, inner and outer boundary, and bonus tolerance
• Interpret the various types of tolerances (flatness, straightness, circularity, cylindricity*, perpendicularity, angularity*, parallelism, position, concentricity*, symmetry*, runout, and profile)
• Describe the datum system
• Interpret applications of datum targets, feature of size datum specifications (RFS & MMC)
• Describe the fundamental concepts of tolerance of position
• Interpret tolerance of position special applications*
• Calculate tolerance of position tolerance values using the fixed and floating fastener formulas*

*Not covered in 2-day foundational-level course

This course teaches GD&T fundamentals. For more advanced GD&T concepts (composite tolerancing, tolerance analysis, datum selection, non-rigid part dimensioning) see our Advanced Concepts of GD&T course offering.

## Is This Course For You

This course is valuable for individuals who create or interpret engineering drawings, product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals.

## Materials Provided

This data is not available at this time

## Course Requirements

This data is not available at this time

## Topics

Introduction
• Engineering drawings*
• GD&T/coordinate dimensioning comparison
• Eight key GD&T terms
Terminology
• GD&T modifiers and symbols
• Rule #1 and Rule #2
• Basic dimensions, virtual condition, bonus tolerance
Form Controls
• Flatness
• Straightness
• Circularity
• Cylindricity*
Datums
• The datum system (planar datums)
• Interpreting datum targets
• Feature of size datum specifications (RFS)
• Feature of size datum specifications (MMC)
Orientation Controls
• Perpendicularity
• Angularity*
• Parallelism
Tolerance of Position Controls
• Definitions, conventions, advantages, basic theories
• RFS and MMC tolerance of position applications
• Cartoon gages for tolerance of position (MMC) applications*
• Tolerance of position special applications*
• Calculating distances on parts dimensioned with tolerance of position*
• Fixed and floating fastener formulas*
Runout Controls
• Circular runout
• Total runout
Profile Controls
• Profile tolerancing
• Profile of a surface
• Profile of a line
• Profile tolerance applications*
*Not covered in 2-day foundational-level course