Document: NRC Regulatory Guide
Document ID: 1859c547-c10c-4ce4-ad2e-e54f7b66d4ef
Document Type: regulatory_guide
Title: Laboratory Investigations of Soils and Rocks for Engineering Analysis and Design of Nuclear Power Plants + HISTORY – HISTORY 07/2014 – DG-1256 , Proposed Revision 3 08/2001 – DG-1109 , Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1318/ML13186A032.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.138
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CFR Title: 

Content:
of cyclic stress values obtained from triaxial tests, as required. Documentation should present and reference the rationale behind the adjustment and the data supporting its magnitude. For additional information, see Tatsuoka et al., 1994 (Ref. 31), on cyclic triaxial tests of sand and gravel and Vucetic and Dobry, 1991 (Ref. 32), on cyclic triaxial tests in clays). 6.3. Resonant Column Tests a. ASTM D4015, “Standard Test Methods for Modulus and Damping of Soils by the Resonant-Column Method” (Ref. 33), describes testing procedures to determine the shear modulus, shear damping, rod modulus (Young’s modulus), and rod damping for solid cylindrical specimens of soil in undisturbed and remolded conditions by vibration using the resonant column. DG-1256, Page 11 b. As an alternative, “Technical Procedures for Resonant Column and Torsional Shear Testing of Soil and Rock Samples,” Procedure PBRCTS-1 (University of Texas at Austin, 2000, Ref. 34), can also be used. For additional information, Appendix A discusses the limitations and applicability of these tests and gives related references. 7. Testing Procedures for Determining the Engineering Properties of Rock a. Investigators should perform testing procedures for determining the engineering properties of rock according to accepted and published methods. For additional information, Appendix A outlines and gives references for common testing procedures. D. IMPLEMENTATION The purpose of this section is to provide information on how applicants and licensees1 may use this guide and information regarding the NRC’s plans for using this regulatory guide. In addition, it describes how the NRC staff complies with 10 CFR 50.109, “Backfitting” and any applicable finality provisions in 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” Use by Applicants and Licensees Applicants and licensees may voluntarily 2use the guidance in this document to demonstrate compliance with the