Document: NUREG-0800
Document ID: 73747cf4-ff95-449b-b6b0-53dc0755b9e0
Document Type: srp
Title: OTHER SEISMIC CATEGORY I STRUCTURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12353A382.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.4
CFR Part: 
CFR Title: 

Content:
ia for the review of safety- related masonry walls that will meet the design standards specified in Subsection II of this SRP section. 1. General Requirements The materials, testing, analysis, design, construction, and inspection related to the design and construction of safety-related concrete masonry walls should conform to the applicable requirements contained in Uniform Building CodeC1979, unless the provisions to this criteria specify otherwise. The use of other industrial codes, such as ACI 531, ATC 3-06, or NCMA, is also acceptable. However, when the provisions of these codes are less conservative than the corresponding provisions of these criteria, their use should be justified on a case-by- case basis. The reviewer will evaluate the use of new or updated design standards such as ACI 530 and the International Building Code (IBC) on a case-by-case basis to assure that they achieve the same level of safety as the above-referenced standards. No unreinforced masonry walls will be permitted in new construction. 2. Loads and Load Combinations The loads and load combinations should include consideration of normal loads, severe environmental loads, extreme environmental loads, and abnormal loads. The following load combinations should apply (for definition of load terms, see SRP Section 3.8.4, Subsection II.3). A. Service Load Conditions (1) D + L (2) D + L + E (3) D + L + W If thermal stresses from T0 and R0 exist, they should be included in the above combinations, as follows: (1a) D + L + T0 + R0 (1b) D + L + T0 + R0 + E (1c) D + L + T0 + R0 + W 3.8.4-22 Draft Revision 4 – December 2012 Check load combination for controlling condition for maximum L and for no L. B. Extreme Environmental, Abnormal, Abnormal/Severe Environmental, and Abnormal/Extreme Environmental Conditions (4) D + L + T0 + R0 + E' (5) D + L + T0 + R0 + Wt (6) D + L + Ta + Ra + 1.5 Pa (7) D + L + Ta + Ra + 1.25 Pa + 1.0 (Yr + Yj + Ym) + 1.25 E (8) D + L + Ta + Ra + 1.0 Pa + 1.0 (Yr + Yj + Ym) +