RB & G Engineering, Incorporated
Provo,
Utah
View Accreditation Certificate
S. Robert
Johnson
1435 West 820 North
Provo
,
Utah
84601
Phone: (801) 374-5771
Fax: (801) 374-5773
rjohnson@rbgengineering.com
http://www.rbgengineering.com
Quality Management System - accredited since 3/1/1994
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 3/1/1994
R68, T30, T166, T209, T245, T269, T308, T312, D2041, D2726, D3203, D3549, D5444, D6307, D6925, D6926, D6927
Soil - accredited since 3/1/1994
R58, T88, T89, T90, T99, T180, T193, T265, T311, D421, D422, D698, D1140, D1557, D1883, D2216, D4318
Aggregate - accredited since 3/1/1994
R76, T11, T19, T21, T27, T84, T85, T96, T255, C29, C40, C117, C127, C128, C131, C136, C535, C566, C702
Concrete - accredited since 3/1/1994
M201, R60, R100 (Beams), R100 (Cylinders), T22, T97, T119, T121, T152, T309, C31 (Beams), C31 (Cylinders), C39, C78, C138, C143, C172, C231, C511, C1064, C1231 (7000 psi and below)
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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