Document: NUREG-0800
Document ID: ab4f353d-c299-479d-ab25-834f97196988
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR CONCRETE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070326.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
. . . . . . Y c(ii)(a) (1), (2), (3)II.3.a.iii(b)(i)(1), (2), and (3) . . . . . . . . . . . . . . . . . . . . 1.6S (4) c(ii)(a) (4)II.3.a.iii(b)(i)(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7S (4) c(ii)(b) II.3.a.iii(b)(ii)(1), (2), (3), and (4) . . . . . . . . . . . . . . . . . . . . . . . . . 0.9Y119 Notes (1) S - For concrete structures, S is the required section strength based on the working stress design method and the allowable stresses of ACI 318 Code. For structural steel, S is the required section strength based on the elastic design methods and the allowable stresses defined in Part 1 of the AISC N690 "Specification for the Design, Fabrication and Erection of Structural Steel for Buildings."120 The 33 % increase in allowable stresses for steel due to seismic loadings is not permitted. (2) U - For concrete structures, U is the section strength required to resist design loads based on the strength design methods described in ACI 349 Code with the exception of divider barrier. (3) Y - For structural steel, Y is the section strength required to resist design loads and based on plastic design methods described in Part 2 of the AISC N690 "Specification for the Design, Fabrication and Erection of Structural Steel for Buildings."121 (4) - For these two combinations, in computing the required section strength, S, the plastic section modulus of steel shapes may be used. DRAFT Rev. 2 - April 1996 3.8.3-30 For the divider barrier, ice-condenser elements, and the drywell, the structural acceptance criteria are acceptable if found in accordance with the following: a. Divider Barrier (i)i. For concrete portions of the divider barrier, the specified limits for stresses and strains are acceptable if found in accordance with Subsection CC3430 of ASME Code Section III, Division 2. The 33 % increase in allowable stresses is permitted only for temperature loads and not for OBE seismic or wind loads. (ii)ii. For steel portions of the divider