Document: NUREG-0800
Document ID: 838f03f5-e038-48e3-9af7-74af5e319676
Document Type: srp
Title: through 3.5.3.3 for earth retaining walls).
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550054.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.3.1
CFR Part: 
CFR Title: 

Content:
ses above should be combined by the absolute sum method. To determine the flexibility of the pool wall, it is acceptable for the applicant to use equivalent mass and stiffness properties obtained from calculations similar to those described in ? Introduction to Structural Dynamics,” McGraw-Hill Book Co., New York, 1964, by Biggs, John M. Should the fundamental frequency of the pool wall model be higher than or equal to 33 hertz, it may be assumed that the response of the pool wall and the corresponding lateral support to the new rack system are identical to those of the base slab, for which appropriate floor response spectra or ground response spectra may already exist. 6. Structural Acceptance Criteria Table 1 provided in this Appendix provides the structural acceptance criteria. When the design considers buckling loads, the criteria provided in ASME Code, Section III, Division 1, Appendix XVII should limit the structural acceptance criteria. For impact loading, the ductility ratios used to absorb kinetic energy in the tensile, flexural, compressive, and shearing modes should be quantified. In the consideration of the effects of seismic loads, factors of safety against gross sliding and overturning of racks and rack modulus under all probable service conditions should be in accordance with SRP Section 3.8.5, Subsection II.5. This position on factors of safety against sliding and tilting need not be met provided that the applicant meets any one of the following conditions: A. Detailed nonlinear dynamic analyses show that the amplitudes of sliding motion are minimal and impact between adjacent rack modules or between a rack module and the pool walls is prevented provided that the factors of safety against tilting are within the allowable values provided in SRP Section 3.8.5, Subsection II.5. B. Any sliding and tilting motion will be contained within suitable geometric constraints such as thermal clearances, and any impact resulting from the clearances is