SB 202

The SB 202 Compressive Strength Specialist certification is a one-day certification course that certifies an individual’s ability to properly sample and test soils and flexible base compressive strength properties in accordance with TxDOT Test Procedures.┬áThere is no demonstration or training; individuals must come prepared to pass examinations of associated test procedures through demonstration, verbal and practical methods. Once the evaluations are successfully completed, a final written examination is administered. A score of 80% or higher is necessary to obtain certification.

Test Procedures covered:

Tex-100-E Surveying and Sampling Soils for Highways
Tex-101-E Preparing Soil and Flexible Base Material for Testing (Part II)
Tex-117-E Triaxial Compression for Disturbed Soils and Base Materials
Tex-120-E Soil Cement Testing
Tex-121-E Soil-Lime Testing
Tex-128-E Determining Soil pH
Tex-400-A Sampling Stone, Gravel, Sand and Mineral Aggregates
Tex-600-J Sampling and Testing Lime (Part I)


A current SB 201 certificate is required to participate in this class.


Every three (3) years all SB 202 Compressive Strength Specialists are required to re-certify. The re-certification course is a three day course offered throughout the year at the HMAC.

A Specialist can attend a re-certification class up to one year prior to expiration. If certification expires the Specialist is required to attend the 5 day SB202 Training Course again.

Federally Mandated Annual Proficiency

The Texas Department of Transportation requires all SB 202 Strength Specialists to participate in an Annual Proficiency Program. Participation in this program is MANDATORY. Failure to participate will result in certification revocation.

To learn more about the proficiency program, click here.