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AASHTO Accreditation Policy and Guidance on Masonry Unit and Prism Testing

Jan 07, 2025

The AASHTO Accreditation Program (AAP) has released the following policy document: AASHTO Accreditation Policy and Guidance on Masonry Unit and Prism Testing.

This policy is based on the requirements of ASTM C1716/C1716M-24, ASTM C140/C140M-24, and ASTM C1314-23b.

The objective of this document is to describe how testing agencies can resolve nonconformities related to compression machines for masonry unit and prism testing and how the AASHTO Accreditation Program will be presenting C140/C140M and C1314 accreditation listings moving forward.

Please keep in mind that changes will not be made until after each laboratory has resolved the nonconformities noted in their most recent masonry assessment, which means it could take several years for the entire accreditation directory to be updated based on this policy.

If you have any questions, please contact your state’s Quality Analyst.