Document: NUREG-0800
Document ID: bef1ea40-9941-4e02-89c6-16eca69fabac
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340582.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
pecifications Information pertaining to design codes, standards, specifications, regulatory guides, and other industry standards that are applied in the design, fabrication, construction, testing, and surveillance of seismic Category I foundations is reviewed. 3. Loads and Load Combinations Information pertaining to the applicable design loads and their various combinations is reviewed. The loads.normally applicable to seismic Category I foundations are the same as those applicable to the structures which the foundations support. These loads are described in subsection 1.3 of SRP Section 3.8.4. 4. Design and Analysis Procedures The design procedures used for seismic Category I foundations are reviewed with emphasis-on the extent of compliance with the ACI 349 Code* (Ref. 1) for concrete structures, and with the AISC Specifications (Ref. 2) for steel structures. The analysis procedures used for seismic Category I foundations are reviewed with respect to the applicability of the theories on which these procedures are based. Among the areas reviewed are the following: a. The assumptions made on boundary conditions and the expected behavior of each foundation when subjected to the various design loads. b. The methods by which lateral loads and forces and overturning moments thereof are transmitted from the structure to the foundation media. Such forces are mainly generated by the environmental and abnormal plant conditions such as wind, tornadoes, earthquakes, and pipe ruptures. Methods of determining overturning moments due to the three components of the earthquake are also reviewed. c. The computer programs that are used in the design and analysis of seismic Category I foundations. d. A Category I structures design report is reviewed (Appendix C, SRP.Section 3.8.4). e. A structural audit.is conducted (Appendix B, SRP Section 3.8.4). 5. Structural Acceptance Criteria The foundation, as a connecting line between the structure and soil media, is reviewed for its