
GD&T to ASME Y14.5 – Advanced
An intensive two-day course in GD&T, which follows on from, and builds upon, the Fundamentals course.


Course Description:
This intensive two-day course develops the more advanced concepts of GD&T to the ASME Y14.5 standard. Participants expand their understanding of datums, material condition modifiers, tolerance interactions, and the deeper rules that govern ASME Y14.5. The course focuses on advanced interpretation and correct application of the standards, with worked examples throughout and opportunities to discuss industry-specific scenarios.
Course Objectives:
By completing this course, participants will:
Build on Level 1 knowledge - Reinforce core concepts from Level 1 and extend them into more advanced areas of ASME Y14.5.
Master advanced datum structures - Learn how to define datums using complex surfaces, groups of features, contacting features, and situation features.
Understand material condition modifiers in depth - Apply Maximum Material Condition (MMC) and Least Material Condition (LMC) correctly — including datum shift, bonus tolerance, and virtual condition boundaries.
Interpret complex drawings with confidence - Apply rules for non-rigid parts, projected tolerance zones, multiple feature controls, and grouped tolerances.
Gain practical confidence - work on practical exercises with real drawings and parts to gain hands on practical experience.
Who it is for:
This course is designed for individuals who have completed Level 1 and require a deeper, more technical understanding of ASME Y14.5.
The course is particularly valuable for:
Design and Mechanical Engineers
Inspectors and Inspection Planners
Drafters
Machinists, Operators, and Tooling Engineers
Sales, Purchasing, and Quality personnel
Managers, Supervisors, and Production Associates
Anyone who needs to read, interpret, or work with the standards on engineering specification
Requirements:
Completion of Level 1 is required.
Delegates don't need to bring materials, laptops etc. All materials are provided by GD&T Academy.
Participants are welcome to supply drawings or components, which may be integrated into exercises to enhance course applicability.
An upper limit of 10 delegates is advised to ensure effective learning.
Materials provided:
Detailed course notes including drawing examples
Workbook with exercises and other printable handouts
Quizzes and knowledge checks to gauge progress throughout the course
Certificate of course completion
Delivery Format:
Onsite or online delivery
Duration:
2 days
Course Syllabus:
Review of Level 1 material
Guidelines for working with Geometric Tolerances
The six-step method
Ideal and non-ideal features
Datums
Situation features
datums based on single datum features
common datums based on aligned and non-aligned datum features
datums based on groups of datum features
datums based on complex surfaces
identifying situation features on drawings
datums based on contacting features
moving datum targets
Controlling individual degrees of freedom
Maximum Material Requirement
Review of Maximum Material Condition modifier applied to tolerance values
bonus Tolerance
Virtual Condition boundaries
zero tolerances at MMC
Least Material Requirement
bonus Tolerance
Virtual Condition boundaries
Maximum Material Requirement applied to datums
‘datum shift’
datums based on Virtual Condition boundaries
Projected tolerance zones
Tolerances applied to non-rigid components
Multiple and Composite tolerances applied to groups of features
FRTZF and PLTZF
different ways of controlling patterns or groups of features
Multiple and Composite tolerances applied to surfaces
To book a course, discuss possible dates, or for further information:
About This Course:
"Bridging the Gap Between Theory and Practice"
GD&T Academy
UK office:
8 Lanercost Crescent Milton Keynes
MK10 9EB
Phone: +44(0)7887748891
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