GD&T Introduction & Fundamental Principles


		International Institute of Geometric Dimensioning & Tolerancing

Level 2
GD&T – Introduction & Fundamentals (Interpretation)
Course Outline


Course Objective	To provide a foundational understanding (interpretation) of mechanical drawings using linear tolerancing and GD&T in the design, manufacture and inspection of parts, which have geometric controls applied per ANSI / ASME or other national standards such as ISO 1101.
Course Length	2 Days (16-hours)
Course Content	Introduction to Theory and Rules
	Rule 1 on features of size Rules 2 & 3 on material condition principles (MMC, LMC & RFS) Comparison of changes between standards
	Linear Transformation to GD&T
	Implications of +/- tolerancing Conversion of square zone to diametral
	Datums and Datum Features
	Datum precedence Planar datum features Datum features of size Inclined datums Partial datum features
	14 Geometric Symbols
	Analysis of symbols and definitions Analysis of tolerance zones Actual mating envelope Supporting symbology
	Feature Control Frames
	Single segment feature control frames Composite feature control frames 2D analysis of single segment feature control frames Virtual condition principles Beginning levels of 3D analysis
	Analysis of Measurement Applications
	Negative implications of specific measurement procedures Analysis of data from case studies and formula calculations Position calculation exercises and review of general guidelines
	Global Simplification of GD&T
	GD&T boundary comparisons Reduction of symbology (14 symbols down to 3 symbols)
Targeted Audience	Any individual who must have the ability to “interpret” mechanical drawings using linear tolerancing and GD&T. Any manager with direct or indirect responsibility for product development, manufacturing, quality, customer interaction or supply chain management. Engineers of all technical disciplines, mechanical designers & drafters, mechanical inspectors & technicians, metrologists, machine operators, tool makers and statisticians who analyze data from mechanical components.
Prerequisites	Introduction to Mechanical Drawings or equivalent knowledge. The GD&T – Introduction & Fundamentals (Interpretation) is available in PDF format.

Training Transformation	Business Transformation	GD&T Training Deployment Guide

To read about the Training Transformation, click here.	To read about the Business Transformation, click here.

Example Graphics from Course	GD&T Boundary Comparisons	Global Simplification of GD&T


	Feature Control Frame	Datum Precedence


	Inclined Datum Features	Implications of MMC, LMC & RFS

	Breakdown of Position Calculations


	Note : Click on any image to zoom in.