Incorporates the October 2025 and March 2026 Errata This test method covers obtaining, preparing, and testing cores drilled from concrete for length or compressive or splitting tensile strength determinations. This test method is not applicable to cores from shotcrete. Note 1 – ASTM Test Method C1604/C1604M is applicable for obtaining, preparing, and testing cores from shotcrete. Note 2 – Appendix X1 provides recommendations for obtaining and testing sawed beams for flexural performance.