Haag 3D Solutions has Moved!

Haag 3D Solutions has moved from Mount Laurel to Moorestown!

Jim Wiethorn featured in Nat'l Law Journal for "brilliant" exp...

Jim Wiethorn featured in Nat'l Law Journal for "brilliant" expert witness work

Haag Welcomes Larry Dillon, Vice President of Construction Con...

Haag Welcomes Larry Dillon, Vice President of Construction Consulting

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Principal Engineer

Robert N. Fleishmann P.E.

Principal Engineer

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Primary Areas of Failure and Damage Consulting

  • Mechanical Failures
    Industrial, commercial, residential
    Equipment failure evaluation
    HVAC equipment
    Process equipment
    Rotating equipment
    Failure to warn issues
    Fire and explosion analysis
  • Accident Analysis from Mechanical Failure
  • Vehicular Evaluations
    Fire causation
    Component malfunction 
  • Plumbing
    Piping and valves
    Fire protection systems
    Component failure
    Residential fixtures
    Product liability
  • Roofing Systems
    Quality of manufacture and application
    Cause, nature, and extent of damage from hail and wind
    Remaining service life
  • Code and Standards Compliance
Licensed Professional Engineer in the States of: Alabama, Arkansas, Florida, Louisiana, Minnesota, Mississippi, 
New Mexico, Oklahoma, Texas, and Wisconsin


  • American Society of Mechanical Engineers (ASME)
  • American Society of Plumbing Engineers
  • Certified Plumbing Engineer
  • Certified EPA Refrigerant Recovery Technician "Universal"
  • International Association of Arson Investigators
  • National Association of Fire Investigators
  • Society of Automotive Engineers
  • Texas Association of Accident Reconstruction Specialists

College Education

  • Bachelor of Science in Mechanical Engineering
    Tulane University, 1967

Testimony history available upon request.

4949 W. Royal Ln. * Irving, TX 75063 * 214-614-6500 * HaagEngineering.com