Document: NUREG-0800
Document ID: 8160c1fd-7cef-4c93-8e12-456019f2cfd2
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A267.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
ll other seismic Category I foundations. These should also include the loads that are induced by the construction sequence and by the differential settlements of the soil under and to the sides of the structures. 4. Design and Analysis Procedures. The review assesses design procedures used for seismic Category I foundations other than containment, emphasizing the extent of compliance with American Concrete Institute (ACI) 349, with additional guidance provided by RG 1.142, for concrete structures and the American National Standards Institute/American Institute of Steel Construction (ANSI/AISC N690-1994) including Supplement 2 (2004) specifications for steel structures. For containment foundations, the emphasis is on the extent the procedures discussed in Subsection I.4 of SRP Section 3.8.1 are met. The review includes analysis procedures used for seismic Category I foundations with respect to the applicability of the theories on which these procedures are based. Among the areas reviewed are the following: A. Assumptions about boundary conditions and the expected behavior of each foundation when subjected to the various design loads. B. Methods that transmit lateral loads and forces and overturning moments thereof from the structure to the foundation media. Such forces are mainly generated by environmental and abnormal plant conditions, such as wind, tornadoes, hurricanes, earthquakes, and pipe ruptures. The review includes methods of 3.8.5-4 Revision 4 – September 2013 determining overturning moments attributable to earthquakes, as described in SRP Section 3.7.2. C. .Treatment of transient and localized loads. D. .Treatment of the effects of shrinkage and cracking of the concrete. E. .Computer programs that are used in the design and analysis of seismic Category I foundations. F. Seismic Category I structures design report (see Appendix C to SRP Section 3.8.4). G. A structural audit (see Appendix B to SRP Section 3.8.4). Where a single mat foundation is used for