Document: NUREG-0800
Document ID: 6d95bc89-e14a-4d87-bf91-1d1760c2aff8
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12353A388.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
SRP Section 3.7 provides additional guidance on OBE use. 4. Design and Analysis Procedures. The design and analysis procedures used for Seismic Category I foundations are acceptable if found to be in accordance with the following: A. The design should consider the soil-structure interaction, hydrodynamic effect, and dynamic soil pressure. B. For Seismic Category I concrete foundations other than the containment foundations, the procedures are in accordance with the ACI 349, with additional guidance provided by RG 1.142. C. For Category I steel foundations, the procedures are in accordance with ANSI/AISC N690-1994 including Supplement 2 (2004). D. For the containment foundation, if in accordance with the design and analysis procedures referenced in SRP Section 3.8.1, Subsection II.4. E. The design report is acceptable if it satisfies the guidelines provided in SRP Section 3.8.4, Appendix C. F. The structural audit is conducted in accordance with SRP Section 3.8.4, Appendix B. 3.8.5-9 Draft Revision 4 - December 2012 Methods for determining the sliding forces and overturning moment attributable to an earthquake should be in accordance with the methods described in SRP Section 3.7.2. Computer programs are acceptable if the validation provided is found to be in accordance with the procedures delineated in Subsection II.4.E of SRP Section 3.8.1. In addition to the above, the design and analysis procedures for the following details are reviewed on a case-by-case basis: A. Appropriateness of the method for determination of the bending moments and shear forces in the foundation mat for seismic loads. B. Adequacy of the sliding analysis method and of the analysis results to account for potential foundation mat liftoff effects. The calculation of the factor of safety against sliding. If sliding resistance is the sum of shear friction along the base mat and contribution of soil lateral pressure up to the full passive pressure capacity induced by embedment effects, adequacy of