DHDC Engineering Consulting Services, Inc.

Company Description
DHDC Engineering Consulting Services, Inc. (DHDC) is a DBE, MBE, EDGE, SBE, LEDE engineering consulting firm headquartered in Columbus with a branch office in Middletown, Ohio.  We are prequalified in Geotechnical Engineering,  Soil & Aggregate Inspections, and Project Manager, by Ohio Department of Transportation (ODOT)  and by Columbus Regional Airport Authority (CRAA).  We are also certified for "Special Inspections" related to soil, concrete, asphalt, masonry, fireproofing and steel under the Ohio Building Code (OBC)-Chapter 17 from the Board of Building Standards and the City of Columbus.  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 practices AASHTO R18 quality assurance, including maintaining records of all in-house calibrations and external calibrations.   DHDC is in good standing for numerous ASTM and AASHTO procedures in concrete, soils, asphalt, and aggregate through AMRL and currently active in the AMRL and CCRL proficiency sample programs.  DHDC keeps up with all proper OSHA safety procedures including eye wash stations, proper storage of chemicals, and proper heat and eye protection requirements. DHDC is also a GREEN SPOT participating firm in the City of Columbus Green Initiative.  DHDC’s highly qualified team is comprised of 20 licensed engineers, geologist, construction inspectors, resident project representative (RPR) Inspectors and support staff who combine their technical skills, experience, dedication, and enthusiasm to providing the highest quality services through a combined team effort. 
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