Terrence Holder B.Eng., M.A.Sc., BSSO, CFEI, P.Eng.

Practice Lead, Civil/Structural & Building Science
Direct: 647-738-5368

Our Leadership Team manages and directs decisions for our employees, helping ensure we are fulfilling the company’s strategic and organizational goals. In addition, they establish and maintain key relationships with business partners that further enhance our profitability and strong industry position.



Mr. Holder is a Practice Lead for the Civil/Structural and Building Science Group at 30 Forensic Engineering. Terrence received his undergraduate engineering degree at Ryerson Polytechnic University in 1996, followed by his graduate degree at the University of Toronto in 1999. During his time at 30 Forensic Engineering, Terrence has been engaged in hundreds of forensic investigations. His expertise includes building sciences, concrete durability, and the evaluation of building structures. Terrence’s wealth of experience in building condition assessments has been vital to establishing the condition of building envelopes, interior finishes, and structural and exterior architectural building features. Terrence is qualified as an expert witness in the Ontario Court of Justice for matters related to concrete.


  • Civil Engineering - Structures and Building Sciences
  • Building Code Compliance and Building Condition Assessments
  • Project, Construction, Facility Management and General Contracting - ICI and Residential
  • Building, Property and Construction Failures
  • Construction Specifications, Contract Preparation and Tendering
  • Specific expertise relating to concrete problems

academic background

Certificate in Building Science, University of Toronto, 2016

Masters of Applied Science (Focus on Concrete Materials), University of Toronto, 1999

Bachelor of Engineering, Ryerson Polytechnic University, 1996

additional courses

  • ACI Ontario, Mass Concrete: Standards, Performance and Best Practices, May 2020 (Webinar)
  • Let's Talk Concrete (Webinars by Master Builders Solutions)
    • Self-Consolidating Concrete, April 2020
    • Introduction to Admixtures, April 2020
    • Troubleshooting Air in Concrete, May 2020
    • Concrete Cracking: Causes, Prevention and Troubleshooting, May 2020
  • Understanding Undetermined, July 2019
  • NFPA 921 and 1033 2014 Editions: Important Revisions, June 2019
  • Critical Evaluation and Testing of Commonly Reported Accidental Causes, June 2019
  • Fire Investigation for Fire Officers, June 2019
  • Electrical Safety, June 2019
  • Arc Mapping Basics, June 2019
  • Basic Electricity, June 2019
  • Understanding Fire Through the Candle Experiments, June 2019
  • Charting Your Career Path in fire Investigation, June 2019
  • Introduction to Fire Dynamics and Modeling, June 2019
  • NFPA1033 and Your Career, June 2019
  • Fire Chemistry, June 2019
  • Thermometry, Heat and Heat Transfer, June 2019
  • Residential Electrical Systems, June 2019
  • An Analysis of The Station Nightclub Fire, June 2019
  • Charleston Sofa Super Store Fire, June 2019
  • The Practical Application of the Relationship Between NFPA 1033 and NFPA 921, June 2019
  • Fire Flow Analysis, June 2019
  • NFPA 921 Certified Fire and Explosion Investigator, June 2019
  • Accreditation, Certification and Certificates, June 2019
  • Canadian National Advanced Fire, Arson & Explosion Training Program, October 2018
  • Residential Electricity for Fire Investigators, June 2018
  • Investigating Residential Dryer Fires, June 2018
  • Investigation of Gas and Electric Appliance Fires, November 2017
  • Building Science Specialist Ontario, Ontario Building Envelope Council OBEC, September 2016
  • Accessibility for Ontarians with Disabilities Act (AODA), 2012
  • International Concrete Repair Institute Spring Convention on Preservation Engineering, 2012
  • American Concrete Institute Spring Convention on the Art of Concrete, 2012
  • Safety First Training and Support Services, 2011
  • Asbestos Compliance Awareness Training, 2010
  • Confined Space Entry Training - Compliance Awareness Level, 2010
  • ASCE Continuing Education in Structural Design on Buildings for Blast/Explosion, 2010
  • Design of Aluminum Structures Seminar, Canadian Society of Civil Engineers, 2008
  • Precast and Prestressed Concrete Seminar, Canadian Precast/Prestressed Concrete Institute, 2007
  • University of Toronto, Chemistry of Cement and Concrete, 2006
  • EIFS Wall Systems, 2002
  • Construction Specifications Canada, Certified Construction Contract Administration, 2001
  • Construction Specifications Canada, Specification Writing 1, 2000
  • Building Science and the Building Envelope, 2000

employment background

-30- Forensic Engineering
Senior Associate—Civil/Structural
2007 – Present, Toronto, ON

  • Construction assessments, including costing and deficiencies
  • Building Sciences
  • Building Systems and Structural Failure Analysis
  • Building Code Assessments

Trow Associates Inc.
Project Manager
2004 – 2007, Brampton, ON

  • Rehabilitate Canadian Pacific Railway superstructure, construct new pedestrian walkways and reconstruct existing roads in the City of Greater Sudbury
  • Responsible for preparing schedule, plan and tendering all contract documents
  • Review all grading and structural drawings for accuracy and completeness

New Construction (Bulletin 19 & 38 Reports)

  • Various projects to provide quality control regarding masonry, waterproofing, exterior insulation finish system and interior insulation for commercial and residential buildings throughout Ontario
  • Review new construction and ensure general compliance with Ontario Building Code
  • Prepare accurate and detailed reports for clients
  • Perform construction and site reviews
  • Execute tests on building components including windows, doors and balconies, for compliance with the Ontario Building Code

Building Condition Surveys

  • Various projects to review the existing conditions of parking garages in commercial and residential buildings in the Greater Toronto area
  • Perform design review of composite roof systems, I-beams and open web steel joists
  • Estimate and monitor schedules for repairs to ensure compliance with scope of contract
  • Perform delamination surveys of structural components
  • Supervise team members on visual surveys of structure components including identification and location of cracks, corroded reinforcement, efflorescence, delamination and spalling
  • Investigate structures to determine nature, extent and cause of deterioration



  • Professional Engineers Ontario (1999)
  • Professional Engineers and Geoscientists of British Columbia (EGBC), Professional Member
  • National Association of Fire Investigators, Certified Fire and Explosion Investigator (CFEI)
  • Canadian Association of Fire Investigators (CAFI)
  • International Association of Arson Investigators (IAAI)
  • Association of Professional Engineers and Geoscientists of Alberta
  • American Concrete Institute (ACI)
  • American Concrete Institute, Canadian Chapter
  • Construction Specifications Canada (CSC)
  • Ontario Building Envelope Council (OBEC)
  • Ontario Society of Professional Engineers (OSPE)
  • Canadian Society for Civil Engineering (CSCE)
  • International Concrete Repair Institute (IRCI)
  • Canadian Society of Forensic - Engineering Division