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ASTM C120/C120M-19

Current Revision

Standard Test Methods of Flexure Testing of Slate (Breaking Load, Modulus of Rupture, Modulus of Elasticity)

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1.1 These test methods cover determination of the breaking load of roofing slate and modulus of rupture of structural slate by use of simple three-point loading.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 These test methods are useful in indicating the differences in flexure (breaking load, modulus of rupture) between various slates. These test methods also provide one element in the comparison of roofing slates under Specification C406 and structural slates under Specification C629.

SDO ASTM: ASTM International
Document Number C120
Publication Date Nov. 1, 2019
Language en - English
Page Count 4
Revision Level 19
Supercedes
Committee C18.01
Publish Date Document Id Type View
Nov. 1, 2019 C0120_C0120M-19 Revision
Nov. 15, 2015 C0120_C0120M-15A Revision
Nov. 1, 2015 C0120_C0120M-15 Revision
Oct. 15, 2012 C0120_C0120M-12 Revision
April 1, 2009 C0120_C0120M-09 Revision