Geometric Dimensioning & Tolerancing (GD&T) Fundamentals

This classroom based training course is designed to help understand and interpret the fundamentals of GD & T. It is based on the ASME Y14.5 – 2009 standard. Formally the ASME Y14.5M - 1994 standard.

By definition, GD & T establishes uniform practices for stating and interpreting dimensions, tolerancing, and related requirements for use on engineering drawings and in related documents.

Course Objectives

After the training you will be able to:

• Identify the benefits of Geometric Dimensioning and Tolerancing.
• Identify the geometric characteristic symbols used in GD & T and understand their meaning.
• Interpret feature control frames and apply them on drawings.
• Interpret and apply modifiers in feature control frames and how they affect the geometric tolerance specified.
• Interpret Datum Reference Frames illustrating primary, secondary, and tertiary datums.
• Understand the function of datum targets and partial datums.
• Discuss methods of inspection for the different geometric characteristic symbols.
• Recognize composite feature control frames and illustrate how to interpret them on drawings.
• Interpret different examples of GD&T applications from various drawing examples.