Standard Testing & Engineering Company

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Standard  Testing  and  Engineering  Company  (Standard  Testing)  was  founded  in  Oklahoma  City  in  1951  as  a  Professional  Engineering  Firm  specializing  in  Geotechnical  and Construction  Materials  Testing.    Standard  Testing  is  an  Oklahoma  Corporation  and  is  classified  as  a  Veteran-Owned  Small  Business.    Standard  Testing  employs  approximately 40 highly-trained and experienced people, most with college-level and/or specialized technical training at our laboratory facilities in Oklahoma City, Enid, and Lawton. Our  Core  staff  members  have  significant  personal  and  professional  history  in  the  State  of  Oklahoma  and  have  developed  working  relationships  with  local,  state,  and  federal agencies, local design engineers, and other members of the local construction industry.

Click Here to visit Standard Testing's Employment Opportunity Page

For more Information on Standard Testing's Internship Program, please contact

Alan Soltani via email at or phone (405) 528-0541

2019 Summer Interns

Pictured: Donovan Bradshaw

Pictured: Donovan Bradshaw

Donovan Bradshaw

Jabril Stevens

In the lab, we performed a multitude of tests with accordance to ASTM standards or other applicable standards. We usually have two types of materials which are soils and aggregates. Soils are typically sand and fine aggregates like silt and clay. Aggregates are usually rocks or gravel with large amount of sample. The two materials have different tests and procedures; however, there are three tests that will be run for almost all samples/materials. The three tests are PIs, Gradation, and Proctors.

Pictured: Jabril Stevens

Pictured: Jabril Stevens

PI (Plasticity Index): Procedure to understand a soil’s plastic limit and liquid limit. Plastic limit is the point of moisture when the soil starts behaving like a plastic. Liquid limit is the point before the soil behaves like a liquid. For more information, reference to ASTM D4318.

Gradations (Sieve Analysis): A procedure used to classify the sample. Classifications include clay, sand, gravel, and silt. However, it is important to note that are other classifications like lean clay, silty clay, and gravely sand. For more information, reference to ASTM D6913.

Proctors: A test to understand the soil’s maximum density and optimum densities. The densities will tell the client if the soil is at the right moisture level for the job. There are different methods and types. One of the most common is ASTM D698.

TRANSPORTATION INDUSTRY: Standard Testing used the interns on projects with the Oklahoma Turnpike Authority (OTA), for bridge replacement projects on the JKT and the new alignments on the EOC east of OKC.

Standard also used the interns to run proctors and PI’s for an ODOT project SH-48 over Cimarron River in Creek County.