Geometric Dimensioning & Tolerancing Course

Learn how to interpret and apply Geometric Dimensioning and Tolerancing (GD&T) symbols, tolerances, and datum references on engineering drawings. This course covers industry-standard practices to ensure precise part and assembly specifications, enabling clear communication and accurate manufacturing.

Overview

Prerequisite

Basic knowledge of reading engineering blueprints and interpreting symbols and dimensions.

Length

2 Days

Syllabus

Lesson 1: Introduction to GD&T

What is GD&T
Why we need GD&T
The 2018 version and the changes

Lesson 2: Datum

Symbols
3-2-1 plane
Datum simulation
Placement & selection
Coplanar & Coaxial

Lesson 3: Feature Control Frame

Symbols
The role of FCF
Type of FCF
Composite FCF
Case study & Exercise

Lesson 4: Basic Dimension

Symbol
Why is important

Lesson 5: Symbols

Part 1: Form
- Straightness
- Flatness
- Circularity
- Cylindricity
Part 2: Orientation
- Parallelism
- Angularity
- Perpendicularity
Part 3: Runout
- Circular Runout
- Total Runout
Part 4: Location
Part 5: Position
- Symmetry (Removed in 2018 version)
- Concentricity (Removed in 2018 version)
Part 6: Profile
- Line profile
- Surface profile
Part 7: Other common symbols
Part 8: Case Study & Exercise

Lesson 6: Material Condition Modifier

Regardless of Feature Size (RFS)
Maximum Material Condition (MMC)
Least Material Condition (LMC)
Virtual Condition (VC)
Taylor Principle
Bonus Tolerance (BT)
Datum Shift (MMB)
Case study & Exercise

Lesson 7: Composite Position Tolerance

Definition of Composite Position Tolerance PLTZF & FRTZF
Primary Datum used in lower segment
Secondary Datum used in lower segment
Composite Position Tolerance vs Single segment FCF
Second segment of single segment FCF and its control

Lesson 8: Tolerances

Equal Bilateral
Unequal Bilateral
Unilateral
Limits

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Geometric Dimensioning & Tolerancing Course

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