DLZ Ohio, Inc.
Columbus,
Ohio
View Accreditation Certificate
Naome
Bryant
6121 Huntley Road
Columbus
,
Ohio
43229
Phone: (614) 888-0040
Fax: (614) 431-4024
nbryant@dlz.com
http://www.dlz.com
Quality Management System - accredited since 1/1/1998
R18, C1077 (Aggregate), C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 8/16/2006
R30, R47, R68, R97, T30, T164, T166, T209, T269, T287, T308, T329, T343, T355, D979, D2041, D2172, D2726, D2950, D3203, D4125, D5444, D6307, D6926, D7113
Soil - accredited since 1/1/1998
R58, T88, T89, T90, T99, T100, T180, T191, T193, T208, T215, T216, T236, T265, T267, T288, T289, T296, T297, T310, D421, D422, D698, D854, D1140, D1556, D1557, D1883, D2166, D2216, D2434, D2435, D2487, D2488, D2850, D2974, D3080, D4318, D4643, D4718, D4767, D4972, D5084, D6913, D6938, D7263, D7928, G51, G57, G187
Rock - accredited since 5/26/2011
D3967, D4543, D4644, D5607, D5731, D7012 (Method C), D7012 (Method D)
Aggregate - accredited since 1/1/1998
R76, R90, T11, T19, T27, T84, T85, T255, C29, C117, C127, C128, C136, C566, C702, D75
Concrete - accredited since 6/19/2007
C31 (Beams), C31 (Cylinders), C39, C78, C138, C143, C172, C173, C231, C511, C617 (7000 psi and below), C1064, C1231 (7000 psi and below)
Masonry - accredited since 9/29/2014
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C780 (Annex 1) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Consistency by Cone Penetration)
C780 (Annex 6 - Cubes) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cubes)
C1019 (Sampling and Testing Grout)
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.
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