Document: NRC Regulatory Guide
Document ID: 0ae1e098-eccd-43e7-b12e-43b05aa1fe48
Document Type: regulatory_guide
Title: Safety-Related Concrete Structures for Nuclear Power Plants (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1617/ML16172A240.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.142
CFR Part: 
CFR Title: 

Content:
el reinforcing bar. Ensure that the measured slip does not exceed the DG-1283, Page 10 values in Table 1 of this RG. The table was derived from California Department of Transportation “Authorization and Acceptance Criteria for Mechanical Couplers on ASTM A706 and ASTM A615 Reinforcing Steel” (Ref. 22), and “California Test 670 – Methods of Tests for Mechanical and Welded Reinforcing Steel Splices” (Ref. 23). Should either of the two mechanical splice samples not meet the slip acceptance criteria in Table 1, conduct a retest in which all remaining static tensile test specimens are evaluated for slip before static tensile testing and meet the slip requirements; if the specimens do not meet the slip requirements, the splices should be rejected. Table 1: Total Slip Acceptance Criteria Reinforcing Bar No. Total Slip (inches) #4 - #6 0.02 #7 - #9 0.028 #10 - #11 0.036 #14 0.048 #18 0.060 2.3 This RG does not endorse, in general, the use of HS reinforcement (Grade 75 and 80) as used in ACI 349-13. Demonstrate the adequacy of HS reinforcement for specific use in the design by testing, analysis, or performance evaluation. 2.4 In addition to Sections 21.1.5.1(a) and (b) and Sections F4.1(a) and (b) of ACI 349-13, for ASTM A615 Grade 60 reinforcement, the minimum elongation in 8-inch-long reinforcing bar shall be at least the following: a. 14 percent for bar sizes No. 3 through No. 6, b. 12 percent for bar sizes No. 7 through No. 11, or c. 10 percent for bar sizes No. 14 and No. 18. 2.5 For deep beams, the staff does not endorse the area of minimum shear reinforcement (Avh) parallel to the longitudinal axis of the beam in Section 11.7.5 of ACI 318-08. The area of minimum shear reinforcement (Avh) parallel to the longitudinal axis of the beam should be 0.0025bws2.. 2.6 The staff does not endorse the application of “one-third greater than that required by analysis” provision to the minimum reinforcement provided in Section 7.12.4 of ACI 349-13. 2.7 Section 7.12.4