• News
  • Contact Us

Nathan Wittasek, P.E., CFEI, LEED AP

Senior Managing Engineer

Thermal Sciences

Professional Profile


Mr. Wittasek specializes in fire protection engineering, building and fire codes, accessibility, failure analysis, and origin and cause determination. He has more than 15 years of experience providing fire protection engineering codes specializing in fire protection engineering, building and fire codes, accessibility, failure analysis, and origin and cause determination. He has more than 15 years of experience providing fire protection engineering codes consulting and failure analysis. Mr. Wittasek has extensive experience addressing issues related to combustible and flammable liquids, explosions, fire alarm and detection systems, fire resistive compartmentation and materials, fire department access and water supplies, fire modeling, fire testing of construction assemblies, fire suppression systems, flame spread analysis, hazardous materials classification and mitigation, means of egress, smoke movement and smoke control.

Mr. Wittasek brings a detailed and pragmatic approach to his clients that reflect his knowledge of how fire and life safety principles and the use of the scientific method relate to building and fire codes, safety standards, fire protection systems failure analysis, and forensic investigation. Having served as a fire fighter, fire science research professional, consultant in the A/E industry, and educator, he is uniquely positioned to contribute both proactively and reactively. He has investigated failures involving flues and chimneys, heating appliances, fire suppression systems (sprinkler and foam systems), fire alarm systems, and smoke management systems.

Mr. Wittasek has been involved with the development of fire and life safety strategies and engineered (performance based) approaches for well over 200 facilities. Based out of Los Angeles, he has worked extensively throughout North America, Central America, China, Europe, the Middle East, and Russia utilizing local and internationally adopted codes and standards including those published by the American Society of Testing and Materials (ASTM), International Codes Council (ICC), National Fire Protection Association (NFPA), Office of Statewide Health Planning and Development (OSHPD), Joint Commission (JCAHO), American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), American Society of Testing and Materials (ASTM), Factory Mutual (FM) and Underwriters Laboratories (UL).

  • M.S., Fire Protection Engineering, Worcester Polytechnic Institute, 1997
  • B.S., Civil Engineering, Worcester Polytechnic Institute, 1995
  • Salamander Honorary Fire Protection Engineering Society
  • Tau Beta Pi Engineering Honor Society
  • Chi Epsilon Engineering Honor Society
  • Skull Senior Honor Society
  • Commendation by the Chief of the Auburn Fire Department
  • 2013 UCLA Extension Architecture + Interior Design Instructor of the Year
  • 2009 Consulting-Specifying Engineer magazine’s “40 under 40” award
  • Best Technical Paper in Conference, “Submersible Oil Well Study,” Proceedings of the Third International Conference on Fire Research and Engineering, October 1999
  • Principal Member: Fire Safety Committee, Council on Tall Buildings and Urban Habitat, 2009-present
  • Principal Member: Technical Committee on Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances, National Fire Protection Association, 2012

    • Registered Professional Engineer, California, #FP 1534
    • Registered Professional Engineer, Nevada, FPE 022159
    • NCEES
    • Certified Fire & Explosions Investigator (CFEI) in accordance with the National Association of Fire Investigators (NAFI) National Certification Board per NFPA 921 (2010)
    • Deputy Building Inspector, Smoke Control, City of Los Angeles, #P031371
    • Hazardous Waste Operations and Emergency Response Training in accordance with OSHA 29 CFR 1910.120, 1926.65
    • LEED Accredited Professional

    • Instructor, UCLA 2004–2014
    • Adjunct Professor, Cal Poly Pomona, 2005–2014