Document: NUREG-0800
Document ID: 072325a8-02ea-4d59-bb3f-06592c340804
Document Type: srp
Title: The Aluminum Association, Specification for Aluminum Structures
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070327.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.4
CFR Part: 
CFR Title: 

Content:
data. Section B.5.1.2.2(c) - Shear Lugs In this section, ACI states that the concrete resistance for each shear lug in the direction of a free edge shall be determined based on the 45-degree half-cone assumption to the concrete free surface from the bearing edge of the shear lug. This is the same assumption as used in Section B.5.1.2.1, and the staff has the same comment as stated there. Therefore, the staff position related to the design of shear lugs is to do case-by-case reviews. The staff review will emphasize methodology verification through specific test data. Section B.7.2 - Alternative Design Requirements for Expansion Anchors In this section, ACI states that the design strength of expansion anchors shall be 0.33 times the average tension and shear test failure loads, which provides a safety factor of 3 against anchor failure. The staff position on safety factor for design against anchor failure is 4 for wedge anchors and 5 for shell anchors unless a lower safety factor can be supported by vendor-specific test data. Section B.7.2 - Anchors in Tension Zone of Supporting Concrete When anchors are located within a tensile zone of supporting concrete, the anchor capacity reduction due to concrete cracking shall be accounted for in the anchor design. REFERENCES 1. Final Safety Evaluation Report Related to the Certification of the Advanced Boiling Water Reactor Design, Appendix F, NUREG-1503, Vol. 2, July 1994. 2. Final Safety Evaluation Report Related to the Certification of the System 80+ Design, Appendix 3A, NUREG-1462, August 1994. DRAFT Rev. 2 - April 1996 3.8.4-46 APPENDIX F TO SRP SECTION 3.8.4 STAFF POSITIONS AND TECHNICAL BASES ON THE USE OF STANDARD ANSI/AISC N690-1984 NUCLEAR FACILITIES: STEEL-RELATED STRUCTURES138 The use of ANSI/AISC Standard N690-1984 for the design, fabrication, and erection of safety- related structures is acceptable to the staff when supplemented by the following staff positions and technical bases. Staff Positions (1) In Section