Construction Testing & Special Inspections

Construction Testing & Special Inspections

DHDC Engineering has developed a strong local reputation for soils, concrete, asphalt, steel and other construction testing. DHDC operates under the guidance of quality systems programs, which addresses all requirements of ASTM E 329 " Standard Practice for Use in Evaluation of Testing and Inspection Agencies as Used in Construction," and AASHTO R18 "Establishing and Implementing a Quality System for Construction Materials Testing Laboratories."  


  • Concrete Plant Inspections/Asphalt Plant Inspections
  • Asphalt Compaction Testing/Asphalt Mix Verifications
  • Soils Compaction Testing/Bearing Capacity Inspections
  • Concrete Air/Slump/Temp Tests/Yield
  • Floor Flatness & Levelness/Roller Compacted Concrete
  • Structural Steel Torque /Visual Weld inspections
  • Mortar Testing/Fireproofing/Waterproofing
  • Roofing Material Inspections
  • Asphalt & Concrete Coring
  • Concrete Mix Designs/Asphalt Mix Design
  • Aggregate Material Analysis
  • Concrete Material Analysis
  • ODOT Highway and Bridge Inspections
  • ACI Certified
  • ODOT Asphalt Certified (level 2 and 3)
  • NICET/NACEP Certified Level II
  • American Welding Society
  • Soils
  • Concrete
  • Masonry
  • Asphalt
  • Steel

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We are dedicated to our work

DHDC Engineering Consulting Services is certified by AMRL and CCRL for soil, concrete, and asphalt testing as well by the Ohio Chamber for Special Inspections. At DHDC, we work hard to provide the solutions that you need!

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Some of DHDC's Construction Testing & Special Inspections client include:

  • Kettering Medical Hospital
  • Kokosing
  • Igel
  • Great Lakes Construction
  • John R. Jurgensen
  • Stimmel
  • EMH&T
  • City of Columbus
  • City of Upper Arlington
  • Franklin County Engineers
  • KZF Design
  • Stantec
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If You Need An Engineering Solution... We Are Available For You!

Contact Us