Document: NRC Regulatory Guide
Document ID: fcaa3426-5268-4adb-a83c-69e7f50d6d6b
Document Type: regulatory_guide
Title: Anchoring Components and Structural Supports in Concrete (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1725/ML17258A579.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.199
CFR Part: 
CFR Title: 

Content:
rrent regulatory practice, and consistent with applicable NRC requirements. DG-1284, Page 5 C. STAFF REGULATORY GUIDANCE This guide endorses the procedures and standards of ACI 349-13, Appendix D, ACI 355.2-07, and ASTM E488/E488M-15 for the design, installation, testing, evaluation, and QA of anchors (steel embedments) used for component and structural supports in concrete, subject to the exceptions and clarifications discussed in the regulatory guidance positions below. The guidance is applicable to the types of anchors discussed in Sections D.1, “Definitions,” and D.2, “Scope,” of Appendix D to ACI 349-13. Adhesive anchors, deformed wire (bar) anchors and hooked bolts (J- or L-bolt) are not within the scope of this RG. 1. Application of Appendix D to ACI 349-13 1.1 Testing and Materials 1.1.1 In addition to the provisions in Section D.3.3 of Appendix D, the NRC staff considers the testing recommendations defined in ASTM E488/E488M-15 to be acceptable as a guide for establishing a testing program. Test methods not covered by ASTM E488/E488M-15 should be established using good engineering judgment. ACI 355.2-07 provides guidance acceptable to the NRC staff for determining whether post-installed mechanical anchors are acceptable. A representative number of anchors should be tested under the applicable environmental conditions for qualification purposes. 1.1.2 The concrete constituents, anchors, and embedded materials should be compatible with the anticipated environmental conditions to which they will be subjected during the life of the plant. 1.1.3 The effects of stress corrosion-cracking of high-strength anchor bolts (actual measured yield strength greater than or equal to 150 ksi) should be considered when selecting bolting material, lubricants, and installation specifications in order to maintain structural bolting integrity (Ref. 11). 1.2 Loads and Load Combinations The loads and load combinations provided in Regulatory Positions 3 and 4 of RG 1.142