Document: NUREG-0800
Document ID: 73dc4705-6dff-4f44-87ee-2a6f76cc6536
Document Type: srp
Title: OTHER SEISMIC CATEGORY I STRUCTURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A258.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.4
CFR Part: 
CFR Title: 

Content:
a third method based on passive pressure should also be included to account for potential inelastic strains. The staff reviews the validity of the assumptions that are the basis of each of these three methods and the extent to which they correspond to the actual site conditions. In particular, the staff reviews the SSI/FEM model used in method (2) to ensure it is appropriate to this type of application. If other effects such as structure-soil-structure interaction are important, these should be included in addition to the pressures computed using the methods described above. If these methods are shown to be overly conservative for the cases considered, then the staff reviews alternative methods on a case-by-case basis. For earth retaining walls that are not restrained by a building, the guidance in ASCE 4-98 Sections 3.5.3.1 through 3.5.3.3 is acceptable. I. The design of masonry walls is considered acceptable when it meets the requirements of Appendix A of this SRP. J. The design of structures that use modular construction methods are reviewed and evaluated on a case-by-case basis. NUREG/CR-6486 provides guidance related to the use of modular construction methods. Appendix B to NUREG/CR-6486 includes modular construction review criteria. K. The design and analysis procedures for the structures important to safety are considered acceptable if they are in accordance with relevant guidance including RGs (e.g., RG 1.143 for radwaste structures. 3.8.4-13 Revision 4 – September 2013 5. Structural Acceptance Criteria. For each of the loading combinations delineated in Subsection II.3 of this SRP section, the structural acceptance criteria appear in ACI 349, with additional guidance provided by RG 1.142 for concrete structures, and AISC N690-1994, including Supplement 2 (2004), for steel structures. The structural acceptance criteria for structures that use modular construction methods are evaluated on a case-by-case basis. See Subsection II.4.J of this SRP for