GDT300 - Geometric Dimensioning and Tolerancing (GDT)
| Semester | |
| School | |
| Last revision date | May 26, 2025 2:01:38 AM |
| Last review date | Jul 14, 2025 12:15:23 AM |
Subject Title
Geometric Dimensioning and Tolerancing (GDT)
Subject Description
This subject introduces students to geometric dimensioning and tolerancing (GD&T), a design specific manufacturing and inspection language for effective technical communication. Students learn the symbols, rules, definitions and terminologies of GDT as outlined in the current standard ASME Y14.5 - 2009. This subject includes hands-on practice in the lab.
Credit Status
One credit toward the Manufacturing Quality Inspection Certificate Program
Learning Outcomes
Upon successful completion of this subject the student will be able to:
1. Define geometric dimensioning and tolerancing (GDT) and commonly used GDT terminology
2. Apply the rules of the ASME standard Y14.5M-1994
3. Use standard GDT symbols appropriately
4. Recognize various sources of standards related to GDT
5. Use GDT to create and inspect parts according to CSA/ANSI standards
6. Use GDT to communicate drawings and designs
Essential Employability Skills
• Execute mathematical operations accurately.
• Apply a systematic approach to solve problems.
• Use a variety of thinking skills to anticipate and solve problems.
• Locate, select, organize, and document information using appropriate technology and information systems.
• Analyze, evaluate, and apply relevant information from a variety of sources.
Academic Integrity
Seneca upholds a learning community that values academic integrity, honesty, fairness, trust, respect, responsibility and courage. These values enhance Seneca's commitment to deliver high-quality education and teaching excellence, while supporting a positive learning environment. Ensure that you are aware of Seneca's Academic Integrity Policy which can be found at: http://www.senecapolytechnic.ca/about/policies/academic-integrity-policy.html Review section 2 of the policy for details regarding approaches to supporting integrity. Section 2.3 and Appendix B of the policy describe various sanctions that can be applied, if there is suspected academic misconduct (e.g., contract cheating, cheating, falsification, impersonation or plagiarism).
Please visit the Academic Integrity website http://open2.senecac.on.ca/sites/academic-integrity/for-students to understand and learn more about how to prepare and submit work so that it supports academic integrity, and to avoid academic misconduct.
Discrimination/Harassment
All students and employees have the right to study and work in an environment that is free from discrimination and/or harassment. Language or activities that defeat this objective violate the College Policy on Discrimination/Harassment and shall not be tolerated. Information and assistance are available from the Student Conduct Office at student.conduct@senecapolytechnic.ca.
Accommodation for Students with Disabilities
The College will provide reasonable accommodation to students with disabilities in order to promote academic success. If you require accommodation, contact the Counselling and Accessibility Services Office at ext. 22900 to initiate the process for documenting, assessing and implementing your individual accommodation needs.
Camera Use and Recordings - Synchronous (Live) Classes
Synchronous (live) classes may be delivered in person, in a Flexible Learning space, or online through a Seneca web conferencing platform such as MS Teams or Zoom. Flexible Learning spaces are equipped with cameras, microphones, monitors and speakers that capture and stream instructor and student interactions, providing an in-person experience for students choosing to study online.
Students joining a live class online may be required to have a working camera in order to participate, or for certain activities (e.g. group work, assessments), and high-speed broadband access (e.g. Cable, DSL) is highly recommended. In the event students encounter circumstances that impact their ability to join the platform with their camera on, they should reach out to the professor to discuss. Live classes may be recorded and made available to students to support access to course content and promote student learning and success.
By attending live classes, students are consenting to the collection and use of their personal information for the purposes of administering the class and associated coursework. To learn more about Seneca's privacy practices, visit Privacy Notice.
Prerequisite(s)
Ability to read engineering drawings
Topic Outline
- Engineering Drawing and Tolerancing
- Introduction to Geometric Tolerancing Symbols and Terms
- Rules and Concepts of GDT
- Form Controls
- Datums (Planer)
- Datums (Axis and Centerplane)
- Ordination Control
- Tolerance of Position
Mode of Instruction
Lectures, labs, presentations, demonstrations, videos/movies.
Prescribed Texts
Fundamentals of Geometric Dimensioning and Tolerancing, 3rd edition, Alex Krulikowski, Nelson Education Inc. ISBN: 9781111129828
To find out the cost of books and learning material go here.
Any courses not listed on the bookstore webpage do not require any resources for purchase. All resources will be provided by your instructor.
Reference Material
None.
Required Supplies
None.
Student Progression and Promotion Policy
http://www.senecapolytechnic.ca/about/policies/student-progression-and-promotion-policy.html
Grading Policyhttp://www.senecapolytechnic.ca/about/policies/grading-policy.html
| A+ | 90% to 100% |
| A | 80% to 89% |
| B+ | 75% to 79% |
| B | 70% to 74% |
| C+ | 65% to 69% |
| C | 60% to 64% |
| D+ | 55% to 59% |
| D | 50% to 54% |
| F | 0% to 49% (Not a Pass) |
| OR | |
| EXC | Excellent |
| SAT | Satisfactory |
| UNSAT | Unsatisfactory |
For further information, see a copy of the Academic Policy, available online (http://www.senecapolytechnic.ca/about/policies/academics-and-student-services.html) or at Seneca's Registrar's Offices. (https://www.senecapolytechnic.ca/registrar.html).
Modes of Evaluation
Assignments
- Assignments must be submitted at the beginning of the class on the date they are due.
- A late penalty of 10% per day is assessed for late assignments, including those not handed in at the beginning of class when due.
- Material will not be accepted after one week following the due date and/or when the marked material is returned to students, whichever comes first.
- Assignments are to be prepared by computer.
Absenteeism and Exams
- Students should be aware that absenteeism almost guarantees an inability to achieve satisfactory grades.
- Students who are absent for a final examination due to an emergency (e.g., motor vehicle accident, hospitalization or death in the family) may provide official documentation within five days of the missed exam and be provided a deferred exam at a later date. Official documentation includes a death notice or an original doctor’s certificate identifying the date, length of time expected absence and the specific reason for the absence. Examinations missed without official documentation and approval result in a grade of zero.
- There are no deferred options for missed tests or assigments. The value of missed tests, at the discretion of the Faculty, will be added to other evaluation components
English Proficiency
- All written work should demonstrate the following characteristics for clarity and conciseness:
-spelling and punctuation are correct
-sentences are structured correctly
-main ideas are supported with specific, relevant examples and reasons
-work flows logically through supporting statements/paragraphs
-work is arranged in correct format (e.g., as a report, essay)
-up to 10% of the final grade may be deducted on all work if the above English competencies are not met.
Format for Assignments
- Students must use the standard, APA style for quoting sources. Help is available at: http://library.senecapolytechnic.ca
Grading is based on the following marking scheme:
| Term Tests (3 at 20% each) | 60% |
| Assignment | 10% |
| Final Exam | 30% |
| Total | 100% |
PLEASE RETAIN THIS SUBJECT OUTLINE FOR POSSIBLE FUTURE USE IN SUPPORT OF CREDIT APPLICATIONS AT OTHER EDUCATIONAL INSTITUTIONS