This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens.

Formerly under the jurisdiction of Committee D18 on Soil and Rock, this test method was discontinued in May 2005 and replaced by D 7012, Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens Under Varying States of STress and Temperatures.

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1.1 This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens.

1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.