Certifications, Associations & Memberships

  • DHDC EngineeringConsulting Services

    DHDC Engineering Consulting Services, Inc. (DHDC) is a DBE, MBE, EDGE, SBE, LEDE engineering consulting firm. DHDC is headquartered in Columbus with offices in Middletown and Cleveland (TP), Ohio. We are prequalified by ODOT under Geotechnical (engineering, drilling, and laboratory), Subsurface Utility Engineering (SUE). We are also certified for "Special Inspections" under the Ohio Building Code (OBC)-Chapter 17 from the Board of Building Standards. Our laboratory is certified by the American Materials Reference Laboratory (AMRL) and Cement and Concrete Reference Laboratory (CCRL) and meets all American Standards for Testing and Materials (ASTM) and American Concrete Institute (ACI) specifications. DHDC is a GREEN SPOT participating firm in the City of Columbus.


DHDC Engineering Consulting Services, Inc. has the following certifications.

Affiliate Member
Issuer: AIA (American Institute of Architects)
Qualifier: American Institute of Architects
Expiration: December 30, 2015

MBE (Minority Business Enterprise)
Issuer: State of Ohio
Expiration: May 6, 2015

EDGE (Engouraging Diversity, Growth, and Equity)
Issuer: State of Ohio
Expiration: May 6, 2015

LEDE (Local Economical Disadvantage Enteprise)
Issuer: City of Columbus Schools
Expiration: December 30, 2016

SBE (Small Business Enteprise)
Issuer: Cincinnati Metropolitan Sewer District
Expiration: May 6, 2015

MBE (Minority) & SBE ( Small Business Enteprise)
Issuer: NEORSD ( North East Sewer District)
Expiration: September 10, 2016

Disadvantage Business Enterprise (DBE)
Issuer: Unified Certification Program
Number: 11452

Associations & Memberships

DHDC Engineering Consulting Services, Inc. is a member and/or professionally affiliated with the following industry organizations:

  • ACEC (American Council of Engineering Companies)

  • AMRL (AASHTO Materials Reference Laboratory)

  • CCRL (Cement & Concrete Reference Laboratory)

  • Columbus Chamber of Commerce (OH)

  • USGB (U.S Green Building Council)

  • City of Columbus Green Seal

  • COMTO (Central Ohio Minority Transportation Organization)

  • ASCE (American Society of Civil Engineers)

  • Rotary Club of Columbus

  • Ohio Department of Commerce

  • Ohio Professional Engineers & Surveyors Board

  • SBE (Small Business Enterprise)

  • Columbus Partnership

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