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This course includes:

  • 7 hours on-demand video
  • 9 articles
  • 7 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
Design Other Design Geometric Dimensioning and Tolerancing (GD&T)

Geometric Dimensioning and Tolerancing (GD&T) : Basics

Learn the essential concepts of GD&T , for mechanical and manufacturing engineers with practice exercises
Bestseller
Rating: 4.3 out of 54.3 (1,493 ratings)
4,729 students
Created by Mufaddal Rasheed
Last updated 11/2020
English
English [Auto]
30-Day Money-Back Guarantee

What you'll learn

  • The basic concepts of Geometric Dimensioning and tolerancing
  • How to apply GD&T to a part drawing
  • Why is GD&T needed and what are its advantages over the traditional method
  • Practice what is learnt through thought provoking exercises with multiple problem sets in the Practice section
  • Reinforce concepts with 50+ Questions
  • Learn from a seasoned design engineer with real world experience in designing chassis systems

Requirements

  • Basic knowledge of mechanical engineering
  • Basic awareness on engineering design
  • Basic knowledge of making 2D drawings

Description

The course is designed in a way to build from the basic concepts of engineering drawing towards more complex concepts.  It starts with explaining the importance of an engineering drawing and going on to explain why GD&T the need has arisen and then a deep dive into the concepts of GD&T

If you are a total beginner the course will build progressively in terms of concepts to capture the core tenets of GD&T.

If you are a seasoned professional then the latter portions of the course will be useful to you

Geometric dimensioning and tolerancing is a body of knowledge and a symbolic language used to communicate design intent on an engineering drawing for manufacturing and inspection.

In this course you will learn , how exactly are the core concepts of GD&T built and how they are applied to drawings with multiple examples .

You will learn and appreciate the importance of the language over the traditional way of dimensioning and learn the possibilities of controlling the parts' variations using various combinations of symbols and controls.

The course will cover the following topics

  • Overall perspective of what an engineering drawing is and why it is important.

  • The Need for GD&T  then moving towards the introductory concepts of GD&T

  • A comprehensive comparison of Traditional method of tolerancing vs GD&T

  • A detailed look at Datums the most important concept in GD&T , How are they created? How are they applied? and what do they mean on the drawing?

  • A detailed look at Bonus tolerance and concept of virtual condition which lays a key role in Mating parts.

  • Explanation of Symbols and their inspection methods

    • Form

      • Straightness

      • Flatness

      • Circularity and cylindricity

    • Orientation

      • Angularity

      • Perpendicularity

      • Parallelism

    • Location

      • Position

      • Symmetry and Concentricity

    • Runout

    • Profile

  • Finally we will have a look at the concept of Datum feature modifiers or Datum shift.

Each section has a Quiz and you will find practice exercises to practice your GD&T skills .

The course is designed in such a way that each and every point is captured as a sub topic with multiple short lectures which are to the point with condensed information.

At the end of the course, take a quiz with 30 insightful questions which will test your conceptual understanding of the subject.


Who this course is for:

  • Aspiring Mechanical design engineering students looking to learn the Subject of GD&T
  • Anyone from the manufacturing industry wanting to understand the core concepts of GD&T
  • Working design engineers who want to sharpen their engineering design knowledge and skills

Featured review

Mithun Shivaputra Bhadre
Mithun Shivaputra Bhadre
4 courses
1 review
Rating: 4.5 out of 58 months ago
I first recommend this course for the beginners, who don't know about the GD &T. Complete course is really good. Understanding of the subject is good to the trainer, but there are some mistakes in slides and some confusing statements about the diametrical tolerances.

Course content

14 sections • 146 lectures • 6h 51m total length

  • Preview03:37
  • My Learning journey and a Learning guide to GD&T
    11:26
  • Preview02:14
  • The Three Major stakeholders
    01:39
  • Preview01:16
  • Cost Of Drawing Error
    02:28
  • Examples of Drawing error
    02:51
  • 3D Model to 2D representation
    01:26
  • Orthographic Projection of 3D into 2D and 1st angle and 3rd angle projection
    08:51
  • Example : what is the type of projection?
    00:51
  • What is Dimensioning?
    01:59
  • Concept of Tolerance
    03:02
  • Ways of representing tolerance
    01:55
  • Preview01:03
  • Types of Fits and Selection
    05:25
  • Examples of types of fits
    03:18
  • How is Tolerance decided?
    12:06
  • Drawing with Tolerances
    03:19
  • Engineering Drawing Template
    02:40
  • Examples of Engineering drawings
    02:06
  • Need from the Drawing
    04:09
  • What is a Feature?
    01:42
  • Examples on Features and non features
    03:29
  • Dimension types on drawings
    04:24
  • How is Inspection of parts done?
    05:00
  • Examples of inspection of a part
    07:27
  • CMM inspection
    01:57
  • Quiz on Basics
    10 questions

  • Tolerancing a pin with a gauge hole
    10:54
  • Issue with Traditional tolerancing - No Relative control of features
    02:17
  • Issue with Traditional tolerancing - Ambiguity in Inspection
    03:00
  • Issue with Traditional tolerancing - No Assembly consideration
    01:45
  • Issue with Traditional tolerancing - No control of Profiles
    02:18
  • Preview03:21
  • Example of Parallel faces
    03:22
  • T slots example
    03:26
  • Poppet of Valve example
    02:40
  • When to use Co ordinate tolerancing and when not
    00:00
  • Quiz : Why GD&T ?
    3 questions

  • Origins of GD&T
    01:54
  • Size, Form, Orientation and Location
    05:14
  • What is GD&T ? What are the important concepts?
    02:35
  • The Feature control Frame
    03:55
  • Preview02:10
  • Common Drafting Errors- Basic dimensions and Feature control frame
    02:51
  • Feature of Size
    02:15
  • Identifying Feature of Size
    02:52
  • Identifying Feature of size Example 2
    02:04
  • Irregular Features of Size and comparison
    06:10
  • Comparison between GD&t and non GD&T
    03:18
  • Material Conditions
    02:00
  • Rule 1
    04:07
  • Rule 1 Examples and Over riding Rule 1
    04:08
  • Preview01:56
  • Introductory concepts
    12 questions

  • Datums : Introduction
    01:11
  • How Datums are Created
    05:27
  • Datum and Datum Feature , Terminology
    02:40
  • Datum Reference Frame
    02:12
  • Datum reference frame CAD demonstration
    03:30
  • Datum Reference frame - 2 Cylindrical feature and 1 Planar feature
    02:48
  • Datum Reference frame - 2 Cylindrical feature and 1 Planar feature CAD
    01:28
  • Datum Reference Frame - 1 Cylindrical and 2 Planar feature
    02:45
  • Datum Reference Frame - 1 Cylindrical and 2 Planar feature CAD
    01:48
  • Selection of Datums
    04:10
  • Simple Process of Applying Datums
    02:13
  • Examples of Datum Scheme selection
    06:04
  • Tolerance Zone
    02:25
  • How GD&T Helps Inspection?
    02:05
  • Tolerance zone Comparison for Position control of Hole
    02:48
  • Comparison Summary
    01:21
  • Inspection Requirements
    02:01
  • Datums
    10 questions

  • Material Modifiers on Geometric tolerance
    03:07
  • Rule #2
    05:00
  • Material Modifiers Example
    02:57
  • Shaft Position Tolerance Brief
    01:14
  • Bonus Tolerance calculation- Shaft
    04:07
  • Hole position tolerance
    01:39
  • Bonus tolerance Hole
    01:54
  • Virtual Condition of Shaft
    02:35
  • Virtual Condition of Hole
    02:20
  • Condition for Successful Assembly
    00:51
  • Functional Gauging using Virtual condition
    01:34
  • Internal and External Boundaries
    00:58
  • Resultant Condition External Feature of Size at MMC
    02:39
  • Resultant Condition Internal Feature of Size at MMC
    02:07
  • Bonus Tolerances study for LMC modifier
    05:00
  • Resultant and Virtual conditions for LMC and Summary
    07:50
  • Example with LMC modifier and calculating minimum wall thickness
    04:21
  • Example 2 with LMC modifier and calculating minimum wall thickness
    03:25
  • Tolerance Calculations for manufactured part - RFS vs LMC vs MMC with exercise
    10:24
  • Actual Mating Envelope
    04:16
  • MMC, Virtual conditions
    6 questions

  • Introduction to Planar Straightness and its inspection
    03:37
  • Straightness of Cylindrical surface
    02:49
  • Straightness of Axis and comparison
    03:59
  • Inspection of Axis straightness
    02:11
  • Material modifier in Axis straightness
    02:23
  • Inspecting Axis straightness with modifier using Functional Gauge
    01:57
  • Inspecting Axis straightness
    01:42
  • Applications of Straightness control
    02:10
  • Straightness applied differently in two directions
    01:23
  • Flatness and its Inspection
    03:46
  • How Flatness saves money.
    01:40
  • Rule 1 and Flatness
    00:51
  • Summary of Flatness control
    02:21
  • Preview02:12
  • Inspecting Circularity
    01:37
  • Cylindricity
    01:38
  • Inspecting Cylindricity
    01:18
  • Points on cylindricity and circularity
    01:51
  • Difference between Surface straightness control and cylindricity
    01:37
  • Form control
    8 questions

  • Angularity control
    01:59
  • Angularity Inspection
    02:07
  • Perpendicularity
    01:20
  • Inspecting Perpendicularity
    02:19
  • Perpendicularity of Feature of size
    02:28
  • Parallelism
    01:21
  • Inspection of Parallelism
    01:03
  • Parallelism vs Flatness
    02:33
  • Orientation control
    5 questions

  • Position Control and its Inspection
    03:25
  • Comparison between Perpendicularity and position
    02:17
  • Concentricity
    01:38
  • Symmetry
    02:24
  • Example of Orientation + Position control - part 1
    07:00
  • Example of Orientation + Position control - part 2
    03:02
  • Location control
    5 questions

  • Circular Runout
    02:34
  • Circular Runout on Perpendicular Face
    01:57
  • Total Runout
    01:54
  • Total Runout on perpendicular face
    01:43
  • Applications of Runout
    02:31
  • Runout controls both Concentricity and Cylindricity
    02:08
  • Example of a Wheel rim
    00:03
  • Runout
    6 questions

  • Profile of a Line
    01:56
  • Profile of a surface and its Inspection
    02:53
  • Points on Profile tolerance
    00:55
  • Profile Control variation with Datums
    00:07
  • Profile
    5 questions

Instructor

Mufaddal Rasheed
Mechanical engineer , Inventor and Quora Top Writer
Mufaddal Rasheed
  • 4.2 Instructor Rating
  • 3,397 Reviews
  • 10,290 Students
  • 15 Courses

Mufaddal Rasheed is a mechanical design engineer and an inventor  experienced in a role in Automotive R&D designing complete Chassis systems from Concept to production for SUV projects in Mahindra & Mahindra Ltd for 7 years . Part of a team which delivered a innovative modular chassis platform for 5 vehicles.

With knowledge of the complete product development process and the details of engineering systems, he brings to the table a combination of analytical and creative skills.

Currently working on multiple projects of his own towards becoming a serial inventor and educator in the area of Design engineering.

He is passionate about mechanical design and innovation and writes regularly on Quora with a Top writer badge.

Core belief is that engineering is a lifelong learning process and for a designer  it is "the more you know the better you design".

Ultimate goal is to build a comprehensive knowledge eco-system for mechanical design engineers and aspirants which would prepare an individual for engineering innovation.

The Courses are focused on Practical aspects of Automotive and General Mechanical design engineering Targeted  purely towards product development grounded in theory.

What students say about the courses according to 600+ sample surveys

97 % say they are learning valuable information

96 % say the explanation of concepts is clear

99 % say the instructor is knowledgeable in the subject

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