ASTM D3966 81 PDF

More D However, the direct tensile test is difficult and expensive for routine application. The splitting tensile test appears to offer a desirable alternative, because it is much simpler and inexpensive. Furthermore, engineers involved in rock mechanics design usually deal with complicated stress fields, including various combinations of compressive and tensile stress fields. Under such conditions, the tensile strength should be obtained with the presence of compressive stresses to be representative of the field conditions.

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Imperative sentences indicate mandatory provisions. See Appendix X1 for comments regarding some of the factors influencing the interpretation of test results. The text of these test methods references notes and footnotes which provide explanatory material. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the test methods. These test methods also include illustrations and appendices intended only for explanatory or advisory use.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

In this system, the pound [lbf] represents a unit of force [weight], while the unit for mass is slugs. How one applies the results obtained using this standard is beyond its scope. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. 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.

Foundation construction. DOI:


ASTM D3966 81 PDF

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