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WSQ Tolerance Stackup and Analysis in Mechanical Design (PDU)(SFC)(WSQ 


Mechanical designs can be complex involving numerous parts and sub-assemblies. In the manufacture of these parts and sub-assemblies, they are subjected to variation. Hence, a better understanding of their form, fit and function is vital. For better clarity and quality acceptance, more firms are now specifying their engineering drawings using GD&T symbols so as to better control its geometric and functional characteristics. Tolerance stackup methods are then used to ensure that the cumulative effects of these tolerances are acceptable to the functional aspects in a sub-assembly. In this course, a disciplined tolerance stackup and analysis approach would be applied on engineering part assemblies subject to different and multiple GD&T specifications. 


1. To be able to identify, determine and ascertain the degree and variation of fit about a particular design assembly.
2. To learn and follow the principles and methodologies in evaluating design tolerances through a disciplined approach.
3. To Assess tolerance stickup approaches on GD&T specified parts for application proficiency

Underpinning Knowledge:
1. General Tolerance Concepts.
2. Types of Fit Systems.
3. Tolerance Analysis Methods.
4. Statistical Sampling and Tolerance Setting in Tolerance Stackup and Analysis
5. Statistical Stack-up Methods, Toleranced-Based Analysis, Computer-based Stack Tolerancing methods.
6. Tolerance Allocation Methods.
7. Tolerance Analysis and Stackup Concepts with GD&T for Part Stacks.
8. Tolerance Analysis and Stackup on Size Limit Transfer for Part and Assembly Stacks.
9. Tolerance Analysis and Stackup on Axis Transfer for Part and Assembly Stacks.


Day 1
Understand and Use of Tolerance Development Process Methods

Day 2
Understand and Use Tolerance Limit Setting for Part Yield, Statistical Tolerance Analysis Methods for Manufacturing Process Applications, and Sensitivity Analysis methods for Tolerance Optimisation

Day 3
* Assessment 1
Applying Statistical Stack-up Methods, Toleranced-Based Analysis, Computer-based Stack Tolerancing methods to handle tight tolerances and functional requirements

Day 4
* Assessment 2
Tolerance Allocation Methods for Design and Processes.
Tolerance Analysis and Stackup Concepts with GD&T for Part Stacks.

Day 5
Tolerance Analysis and Stackup on Size Limit Transfer for Part and Assembly Stacks
Tolerance Analysis and Stackup on Axis Transfer for Part and Assembly Stacks
Revision - Discussion and Clarifications
* Assessment 3

WDA Certification
Upon completion and passing of all required assessments, participants will receive a formal recognition through the award of a Statement of Attainment (SOA) from the Singapore Workforce Development Agency (WDA).

Criteria for WSQ Funding and Certification
To be eligible, participants:
- must be Singaporeans or Permanent Residents of Singapore
- may be employer-sponsored, self-sponsored or unemployed
- achieve 75% attendance
- pass all required assessments, or face a re-test within 2 weeks after the last day of the course.
- eligibility acceptance subject to final approval by WDA before course commencement
*Participants who do not fulfill the above criteria are not eligible for WSQ funding & certification, and are required to pay the course fee in full.

Absentee Payroll Grant
With effect from 1 Jul 2010, all Absentee Payroll Grants will be applicable via the SkillsConnect system.  


Professor Lye, Sun Woh

Sun-Woh Lye, PhD, FIES, is currently a professor from the School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore. He has taught for more than 20 years at both undergraduate and graduate levels relating to design and manufacturing modules such as Design Optimisation and Analysis, Computer Aided Design, Engineering, Advanced Product Design for Manufacture, Virtual Design for Manufacture, Industrial Design, Machining and Process Engineering. He is also active in conducting of professional engineering courses as well as served as consultant at both project advisory and development roles to companies in his area of expertise. Besides teaching, he had held administrative positions in overseeing of graduate and research programmes, fostering research projects and funding, transfer and commercialisation of technological innovations.

Who Should Attend

Relevant occupations include:

Engineering Managers
Product Designers
Process and Tooling Engineers and Technical Personnel
Quality Control Engineers and Inspectors
Procurement Personnel

Fee payable table (subject to WDA's approval and Terms & Conditions Applies)
Sponsorship/Fees* (SG/SPR) ETSS MCES WTS
Company sponsored $1284.37 $287.47 $287.47 $202.92
Self sponsored $1284.37 NA $287.47 $202.92



26, 27, 29, 30 November and 3 December 2018 


9:00am to 5:00pm 


NTU@one-north campus, Executive Centre 

Closing Date:

12 November 2018 

Course Fee:

Standard: S$1809.37  

NTU/NIE Alumni, Staff & Students: S$1809.37  

Group (3 & Above): S$1809.37

NTUC Member: S$1809.37


Registration fees inclusive of:

  • Course materials

  • Light refreshments

  • Complimentary Lunch - applicable at NTU@one-north campus only

  • Prevailing GST

Online Registration

>> CLICK HERE to Register Online


Methods of Payment

1. Credit Card (Visa, American Express and Mastercard only)

2. Cheque made payable to Nanyang Technological University

3. Invoice to Company (for Company Sponsored Participants)

4. E-invoice (for Government Organizations)

5. Telegraphic Transfer or Bank Draft (Note: All related charges are to be borne by participant)

Cancellation & Refund Policy

A written notification to pace@ntu.edu.sg or fax to

6774 2911 before course closing date.

No cancellation charges (Full refund)



A written notification on or after course closing date.

No Refund

SkillsFuture Credit (if applicable):
- Participant to cancel their claim with WDA
- PaCE@NTU reserves the rights to collect the full fee amount from the participant

Replacement Policy

Given a 3 days notice before course commencement, companies may replace participants who have signed up for the course. Terms and conditions apply.


There is no replacement for participant utilising SkillsFuture Credit. Participant to cancel their SkillsFuture Credit claim with WDA.

Terms and Conditions

• Course is subject to a minimum participation before commencement
• Course is subject to a first-come-first-serve basis in light of overwhelming responses
• PaCE@NTU reserves the right to change or cancel any course or trainer, in light of unforeseen circumstances
• All details are correct at time of dissemination

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