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Heider Inspection Group performs a broad scope of testing services under the supervision of Dennis Heider, a registered civil engineer. Our laboratory testing equipment is calibrated annually, and is regularly inspected by the Cement and Concrete Reference Laboratory (CCRL). Our laboratory is also inspected by the following agencies:

  • Cement & Concrete Reference Laboratory (CCRL)
  • City of Los Angeles Department of Building & Safety (LADBS)
  • California Division of the State Architect (DSA)
  • AASHTO Material Reference Laboratory (AMRL)


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City of Los Angeles

Licensed Testing Laboratory RES REP No. TA10137