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Founded in 2016, Rigsbee Engineering is a fire protection and structural engineering consulting firm based in Orange County that specializes in fire and building code compliance, systems design, and forensic services.


With an emphasis on service and continuous communication, we work with clients to provide code consulting and performance-based solutions, and to help them navigate the approvals process with the appropriate authorities. We have been retained on numerous cases for our forensic services and litigation support, which are distinguished by our fire protection experience and technical expertise, coupled with reliability and professionalism. 


Reach us at (805) 405-3275

California Registered Small Business Enterprise (SBE)

Certification ID: 2006305

Certification Type: Small Business(Micro)

Ryan Rigsbee, PE, MS

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  • Professional Civil Engineer, CA (License C85450)

  • Professional Fire Protection Engineer, CA (License FP 2095)

  • Professional Fire Protection Engineer, AZ (License 63026)

  • Certified Fire and Explosion Investigator (CFEI - NAFI)

  • NICET III – Fire Alarm Systems

  • Structural Evaluator – Safety Assessment Program, Cal OES

  • Master of Science in Fire Protection Engineering

California Polytechnic University, San Luis Obispo

  • Bachelor of Science in Civil Engineering

California State University, Chico

  • Professional Member – Society of Fire Protection Engineers 

  • Member – American Society of Civil Engineers



Rigsbee Engineering is led by Ryan Rigsbee. Ryan has over a decade of experience in fire protection and structural engineering, with expertise in code consulting, performance-based design, forensics and litigation support, and industrial applications with an emphasis on hazardous materials and processes. During his career, he has been involved in a number of large-scale projects including industrial and high-rise buildings, large atrium spaces, extraction and processing plants; and medical, education, and transportation facilities. An experienced expert witness, Ryan has been retained on numerous cases involving fire losses and structural deficiencies.


Prior to Rigsbee Engineering, Ryan developed fire and life safety solutions for industry leaders, including Rolf Jensen & Associates, Siemens, and Arup. He is a professional engineer (PE) in civil engineering and fire protection engineering, a Certified Fire and Explosion Investigator (CFEI) through the National Association of Fire Investigators (NAFI), and has attained a NICET III in fire alarm systems.


An active speaker and contributing member, Ryan is involved in several industry groups, including the American Society of Civil Engineers (ASCE) and the Society of Fire Protection Engineers (SFPE). He was the President of the Southern California Chapter of SFPE from 2014 - 2016, and is currently on the Subcommittee for Handbook Development of the Standing Committee on Research, Tools & Methods. He is also on the SoCal SFPE Golf Committee and Scholarship Committee.


Ryan holds a Master of Science in Fire Protection Engineering from California Polytechnic University, San Luis Obispo, and a Bachelor of Science in Civil Engineering from California State University, Chico.

Areas of Expertise


  • Fire Protection Engineering

  • Structural Engineering

  • Forensic Engineering

  • Litigation Support

  • Fire Loss

  • Structural Failure and Deficiencies 

  • Building and Fire Code Consulting

  • Commercial, Industrial, Residential, Healthcare, Educational, HPS, Hazardous Materials, Cannabis

  • Computer Modeling

    • Fire and Smoke

    • Evacuation

    • Pressurization

  • Codes and Standards consulting

    • California Building Code (CBC)

    • California Fire Code (CFC)

    • International Building Code (IBC)

    • International Fire Code (IFC)

    • NFPA 13, 14, 20, 25, 30, 92, 101, 701

    • Municipal Codes


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