• DHDC EngineeringConsulting Services

  • Located in Ohio, DHDC Engineering Consulting Services, Inc. is a DBE, EDGE, MBE, SBE, LEDE Engineering, Consulting firm that specializes in Geotechnical Engineering, Construction Materials Testing, Special Inspections, Subsurface Utilities Engineering and Environmental Engineering services. DHDC also assists developers in formulating high quality teams for successfully completing and managing various projects.

Geotechnical Engineering

DHDC provides geotechnical engineering services for building, bridge and roadway construction, dewatering designs, soil stabilization, borrow suitability, failure investigation analysis and design of foundations, retaining structures, tunnels, airports, railroads, etc.

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Testing & 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 for use in evaluation of Testing and Inspection.

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Subsurface Utilities Engineering

DHDC uses electromagnetic devices such as Ground Penetrating Radar (GPR) to identify utilities and assist on a two dimensional horizontal mapping. Hydro Vacuum or Air Knife (Pneumatic) excavating methods are utilized to determine exact depth, size and type of utility.

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Qualified and CompetentTRACIE DAVIES (Director)

I am delighted to recommend DHDC Engineering Consulting Services as a qualified firm to provide Geotechnical, Subsurface Utilities Engineering (SUE), construction materials testing, and inspection services. DHDC Engineering has successfully provided those services to the City of Columbus for the last few years. DHDC Engineering has attention to detail in mind, and always provides high quality work. DHDC Engineering has played a key factor to the success of many of our projects and we look forward to working with them in the near future.

Good Service! Reasonable Prices.DEAN C. RINGLE (P.E., P.S. Franklin County Engineer)

In 2012 and 2013, DHDC performed soil borings and submitted a Geotechnical Subsurface Investigation Report for a proposed storm sewer casing under CSX RR along Trabue Road; In 2016, DHDC performed soil borings for Thoburn Road Improvements following ODOT Geotechnical Procedures.  Savvas Sophocleous was our main point of contact at DHDC. Savvas' reports for both projects were complete, accurate, and delivered early. He was always quick to respond to questions and requests, and he provided very good service! The fees DHDC charged were reasonable and fair. We recommend DHDC for their high quality geotechnical engineering services,and look forward to working with them again!

Industrial is great firmJACOLYN THIEL (City Engineer)

DHDC has been providing construction materials testing services along with other various engineering/construction services to the City of Upper Arlington for the past decade. DHDC provides us with quick responses to our needs and at the same time provides us with the lowest prices available. In working for government entities, it is rare to find such excellent customer service at the low bid pricing that DHDC can provide. For these reasons, I expect that DHDC will continue to be our top choice for construction materials testing and other related consulting services for a long time in the future.


  • We provideQuality Control

  • Compliance with the State Board of Registration for Professional Engineers and Surveyors, American Association of State Highway and Transportation Officials (AASHTO), Materials Reference Laboratory (AMRL), Cement & Concrete Reference Laboratory (CCRL), Ohio Department of Transportation (ODOT), and Ohio Building Code Chapter 17 Special Inspections.

We provide innovative product solutions for sustainable progress. Our professional team works to increase productivity and cost effectiveness.

our clients

DHDC clients come from varied industries and markets. These include both public and private, state and local agencies, residential, commercial and municipal clients, including developers, contractors, owners, architects, engineers, government, transportation and utility companies alike... Some of these are listed below. We value our clients, and look forward to working with them again in the future.

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