Document: NRC Regulatory Guide
Document ID: a03860d0-46a2-4c53-b0e5-9398a146bf12
Document Type: regulatory_guide
Title: Safety-Related Steel Structures and Steel-Plate Composite
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2033/ML20339A558.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.243
CFR Part: 
CFR Title: 

Content:
be installed before pouring concrete to provide adequate support for large, heavy attachments. In addition, loads from smaller attachments mounted directly to the faceplates after construction of the SC walls (e.g., field run conduit and piping) should be considered where applicable. The effects of elevated temperature in the concrete due to the welding of attachments to the faceplate after the concrete has cured should also be considered. DG-1304. Page 14 12. Editorial Corrections To ensure the proper use of the provisions in ANSI/AISC N690-18, the editorial corrections given below should be followed: • In Table NB3.2, for the information missing in the column under the heading “Example” for unstiffened elements, the sketches shown in Table NB3.2 of N690-12 should be used. • The title for Figure C-A-N9.1.21 in Section N9.1.7a of the Commentary to ANSI/AISC N690-18 should be identified as “Small circular opening – detailing illustration for fully developed edge with flange plate thickness < 1.25tp.” • The definitions for two parameters used in Equations A-N9-8 and A-N9-8M in Section N9.2 of ANSI/AISC N690-18 should be identified as follows: o c2 = calibration constant for determining effective flexural stiffness. o ߩ should be replaced with ߩ′ in the definition for the stiffness-adjusted reinforcement ratio. DG-1304. Page 15 D. IMPLEMENTATION The NRC staff may use this regulatory guide as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this regulatory guide to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests,” (Ref. 30), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR