The SB201 Moisture-Density Specialist certification is a one-day certification course that certifies an individual’s ability to properly sample and test soils and flexible base for determining optimum moisture content by performing a moisture/density curve in accordance with TxDOT Test Procedures.

Pre-Requisite

A current SB101 is required to participate in this class.

Training

The SB201 Training classes will be three days in length and focus on providing a basic understanding and knowledge of the TxDOT Test Procedures and Specifications. These classes are not pre-requisites to any certification class and participants will not earn certification.

Certification

View the SB201 Certification Schedule

There is no demonstration or training; individuals must come prepared to pass examinations of associated test procedures through demonstration, verbal and practical methods.

SB201 Strength Specialists are required to re-certify every three years by attending a one-day certification course.

If certification expires, the specialist may not perform any SB201 responsibilities on a TxDOT project.

Federally Mandated Annual Proficiency

The Texas Department of Transportation requires all SB201 Strength Specialists to participate in an Annual Proficiency Program. Participation in this program is MANDATORY. Failure to participate will result in inactive certification.

To learn more about the proficiency program, click here.

Test Procedures

The below test procedures are covered in SB201. Starred procedures indicate hands-on requirement for certification.*

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