Workshop on Geometric Dimensioning and Tolerancing

GD and T Workshop

Date: Wednesday, March 27, 2013

Place: Lawrence Technological University

21000 West Ten Mile Road

Southfield, MI 48075

Room: Marburger Science and Engineering Auditorium (S100),

Time: 12:30 PM to 04:30 PM

What: GD & T, training certificate will be provided, and 0.4 CEU is available

How: There is No Charge for this free event! Lunch will be provided, sponsored by SME Detroit Chapter One

Who: Dr. Ahad Ali, Assistant Professor and Director of MSIE Program


Training Topic:

The training will provide a thorough understanding and working knowledge of the Geometric Dimensioning & Tolerancing (GD&T) which is used on engineering drawings and solid models for describing nominal geometry and its allowable tolerances in product design, manufacturing, assemblies and inspections. It will also cover the different terminologies, symbols, rules, and tolerance stack-up in the product development processes. ASME Y14.5-2009 standard will be used.

Training Outline:

  • Review of Graphics in Design and Types of Engineering Drawings
  • Fundamentals of Orthogonal Projection, and Sectioning
  • Fundamentals of Dimensioning
  • Symbols, rules and principles instituted by the ASME Y14.5-2009 Standard
  • Fundamentals of GD&T
  • Tolerance Stack-Up Analysis
  • Statistical Tolerancing
     - Major Concepts: Angularity
     - Circular Runout
     - Circularity (Roundness)
     - Concentricity
     - Cylindricity
     - Datum Features
     - Flatness
     - Functional Gages
     - Material Conditions (MMC, LMC, RFS)
     - Mating Part Tolerancing
     - Parallelism
     - Perpendicularity (Squareness)
     - Profile
     - Straightness
     - Symmetry
     - Total Runout
     - True Position


Speaker: Dr. Ahad Ali, Assistant Professor and Director of MSIE Program

Dr. Ahad Ali is an Assistant Professor, and Director of Master of Science in Industrial Engineering in the A. Leon Linton Department of Mechanical Engineering at the Lawrence Technological University, Southfield, Michigan, USA. He earned B.S. in Mechanical Engineering from Bangladesh Institute of Technology, Khulna, Masters in Systems and Engineering Management from Nanyang Technological University, Singapore and PhD in Industrial Engineering from University of Wisconsin-Milwaukee. Dr. Ali was Assistant Professor in Industrial Engineering at the University of Puerto Rico - Mayaguez, Visiting Assistant Professor in Mechanical, Industrial and Manufacturing Engineering at the University of Toledo, and Lecturer in Mechanical Engineering at the Bangladesh Institute of Technology, Khulna. He has published numerous journal and conference papers. Dr Ali has done research projects with Chrysler, Ford, DTE Energy, Delphi Automotive System, GE Medical Systems, Harley-Davidson Motor Company, International Truck and Engine Corporation, National/Panasonic Electronics, and Rockwell Automation. His research interests include manufacturing systems, modeling and simulation, optimization, reliability, scheduling and planning, artificial intelligence, predictive maintenance, e-manufacturing, supply chain, healthcare and lean manufacturing. He is member of IIE, INFORMS, SME and IEEE.

Dr. Ali has initiated Smart Manufacturing and Lean Systems Research Group. He formerly was president of the IIE Lean Division. Dr. Ali has been chair of the IIE Lean Student Paper Competition since 2007. He is the conference chair for IEOM Conference and editor-in-chief of International Journal of Industrial Engineering and Operations Management – A Journal of IEOM Forum.


Contact Info:

Ahad Ali, Ph.D.
Assistant Professor and Director of Master of Science in Industrial Engineering
Smart Manufacturing and Lean Systems Research Group

A. Leon Linton Department of Mechanical Engineering

Lawrence Technological University

Southfield, Michigan 48075, USA
Email:, Phone: 248-204-2531