Minimum Required Samples and Tests

The NDOT Construction Division requires that every material incorporated into the project must be tested and accepted based on a sampling frequency for testing in order to ensure that quality materials are incorporated into the work and to meet federal requirements. These frequencies have been established based on what is necessary to help ensure consistency of the material quality.

Project

• Project Testing Frequencies (revised 01/21)
• Project Testing Frequencies (revised 01/18)
• Project Testing Frequencies (revised 04/17)

Independent Assurance (IA)

• IA Testing Frequencies (revised 01/21)
• IA Testing Frequencies (revised 01/18)
• IA Testing Frequencies (revised 04/17)  

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