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{{Adams
{{Adams
| number = ML13064A105
| number = ML13350A368
| issue date = 12/28/1972
| issue date = 12/28/1972
| title = Testing of Reinforcing Bars for Category I Concrete Structures
| title = Testing of Reinforcing Bars for Category I Concrete Structures
Line 10: Line 10:
| license number =  
| license number =  
| contact person =  
| contact person =  
| document report number = RG-1.015, Rev 1
| document report number = RG-1.015, Rev. 1
| document type = Regulatory Guide
| document type = Regulatory Guide
| page count = 2
| page count = 2
}}
}}
{{#Wiki_filter:Revision 1 12/28/72 U.S. ATOMIC ENERGY COMMISSION
{{#Wiki_filter:Revision I
R EGULATORYn i GOmumIDu'E
                                                                                                                                                        12/28/72
DIRECTORATE  
                              .REGULATORY GUIDE
OF REGULATORY  
                                U.S. ATOMIC ENERGY COMMISSION
STANDARDS REGULATORY  
                                DIRECTORATE OF REGULATORY STANDARDS
GUIDE 1.15 TESTING OF REINFORCING  
                                                                  REGULATORY GUIDE 1.15 TESTING OF REINFORCING BARS FOR CATEGORY I
BARS FOR CATEGORY I CONCRETE STRUCTURES
                                                              CONCRETE STRUCTURES'
1


==A. INTRODUCTION==
==A. INTRODUCTION==
General Design Criterion I of Appendix A to 10 CFR Part 50, "General Design Criteria for Nuclear Power Plants," requires that structures, systems and components important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed.
specimens indicates that the tensile and yield strengths of the full diameter bars may be lower than the ValIe.,,
        General Design Criterion I of Appendix A it) 10                               that ate obtained using reduced diameter -pcinieis. The ClFR Part 50, "General Design Criteria for Nuclear                                   variatinns are generally greater in bar size, No. 14 and Power Plants," requires that structures, systems and                                 larger. Thus, the evaluation of the desigii margin tit components important to safety be designed. fabricated.                              safety in the slrticture may not be conservative if it is erected, and tested to quality standards commensurate                               based upon test results obtained from teduced diameter with the importance of the safety function to be                                     specimens.


This guide describes an acceptable method for implementing this criterion with regard to tests and inspections of reinforcing bars for Category I concrete structures.
performed. This guide describes an acceptable method for implementing this criterion with regard to tests and                                     ASTM A-615-72 requires only one tension test inspections of reinforcing bars for Category I concrete                             specimen per heat if all bars from a single heat differ in structures. 2 The Advisory Committee on Reactor                                     size by less than three designation numbers: only two Safeguards has been consulted concerning this guide and                               specimens are required in other cases. Because each heat has concurred in the regulatory position.                                             may contain from 50 to 250 tons of steel, the fraction of the reinforcing bars that are tested may vary by a
 
2 The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position.


==B. DISCUSSION==
==B. DISCUSSION==
The tensile strength of concrete structures important to safety depends upon reinforcing bars imbedded in the concrete.
factor of 5. A more consistent basis for sampling can he obtained by choosing the test specimens on the basis ,,1 The tensile strength of concrete structures                                  the number of reinforcing bars or the weight of important to safety depends upon reinforcing bars                                     reinforcing.
 
The contribution of the concrete to the tensile strength of the structure iF minimal and thus generally disregarded.
 
The tensile strength of reinforcing bars is usually tested in accordance with ASTM A-615-72, "Standard Specification for Deformed Billet-Steel Bars for Concrete Reinforcement", American Society for Testing and Materials.
 
This specification permits the tensile test specimens to be either of full bar diameter or of a reduced diameter.
 
Comparison of test data obtained with both full bar diameter and reduced diameter'This guide is a revision of former Safety Guide 15. As such, it is applicable to water-cooled nuclear power reactors.2 Structures, systems, and components of a nuclear power plant are designated as Category I if they are designed to withstand the effects of the Safe Shutdown Earthquake (SSE)and remain functional.
 
See Safety Guide 29, "Seismic Design Classification." specimens indicates that the tensile and yield strengths of the full diameter bars may be lower than the values that are obtained using reduced diameter specimens.


The variations are generally greater in bar sizes No. 14 and larger. Thus, the evaluation of the design margin of safety in the structure may not be conservative if it is based upon test results obtained from reduced diameter specimens.
imbedded in the concrete. The contribution of the concrete to the tensile strength of the structure is Special chemistry requirements have occasionally minimal and :hus generally disregarded. The tensile been placed on somne reinforcing bars. and checks should strength of reinforcing bars is usually tested in be made that any such requirements are being met.


ASTM A-615-72 requires only one tension test specimen per heat if all bars from a single heat differ in size by less than three designation numbers; only two specimens are required in other cases. Because each heat may contain from 50 to 250 tons of steel, the fraction of the reinforcing bars that are tested may vary by a factor of 5. A more consistent basis for sampling can be obtained by choosing the test specimens on the basis of the number of reinforcing bars or the weight of reinforcing.
accordance            with      ASTM         A-615-72.         "Standard Specification for Deformed Billet-Steel Bars for                                            Since some mechanical splice configurations may Concrete Reinforcement", American Society for Testing                                require deformations that exceed the minlimum and Materials. This specification permits the tensile test                           requirements set forth in ASTM A-615-72. it is specimens to be either of full bar diameter or of a                                  impertant to inspect the deformations it) assute that reduced diameter. Comparison of test data obtained                                    they will permit a reliable mechanical splice to le made.


Special chemistry requirements have occasionally been placed on some reinforcing bars, and checks should be made that any such requirements are being met.Since some mechanical splice configurations may require deformations that exceed the minimum requirements set forth in ASTM A-615-72, it is important to inspect the deformations to assure that they will permit a reliable mechanical splice to be made.C. REGULATORY
with both full bar diameter and reduced diameter
POSITION 1. Yield Strength and Tensile Strength Tests Reinforcing bars used for concrete structures important to safety should be tested to verify their yield strength and tensile strength as follows: USAEC REGULATORY
GUIDES Copies of Published guides may be obtained by request indicating the divisions desired to the US. Atomic Energy Commission, Washington, D.C. 20545, Regulatory Guides are issued to describe and make available to the public Attention:
Director of Regulatory Standards.


Comments and suggestions for methods acceptable to the AEC Regulatory staff of implementing specific parts of improvements in these guides are encoursped and should be sent to the Secretary the Commission's regulations, to delineate techniques used by the staff in of the Commission, U.S. Atomic Energy Commission, Washington, D.C. 20545, evaluating specific problems or postulated accidents, or to provide guidance to Attention:
==C. REGULATORY POSITION==
Chief, Public Proceedings Staff.applicants.
This guide is a revision of former Safety Guide IS. As such, it is applicable to water-cooled nuclear power reactors.                              I.    Yield Strength and Tensile Strength Tests tSt'ructures, systems, and components of a nuclear power Reinforcing bars used for concrete structures plant are designated as Category I if they are designed to withstand the effects of the Safe Shutdown Earthquake (SSE)                          important to safety should be tested to verify their yield and remain functional. See Safety Guide 29, "Seismic Design                          strength and tensile strength -,3 follows:
Classification."
                      USAEC REGULATORY GUIDES                                      Copies of published guides may be obtained by request ndicating the divisions desired to the US. Atomic Energy Commission, Washington. O.C. 20545.


Regulatory Guides are not substitutes for regulations and compliance with them is not required.
Regulatory GAides ate issued to describe and mrAke available to the public          Attention: Director of Regulato'y Standards. Comrents and suggestions to'
methods accptrible to the AEC Regulatory staff of implementing specific pars of    irrtIOVeMOInts in these guides are encouraged and should be sent to the Secretary the Commission's regulations, to delineate techniques used by the staff in          of the Commission. US. Atomic Energy Commission. Washington, D.C. 20545, evaluating uJlecific problems or postulated accidents, or to provide guidance to    Attention; Chief. Public Proceedings Stall.


Methods and solutions different from those set out in The guides are issued in the following ten broad divisions:
applicantls. Regulatory Guides are not substitutes for regulations and compliance with them is not required. Methods and solutions different from those setOut in     The guides are issued in the following ten broad diwvrions.
the guides will be acceptable if they provide a basis for the findings requisite to the issuance or continuance of a permit or license by the Commission.


1. Power Reactors 6. Products 2. Research and Test Reactors
the guides will be acceptable it they provide a basis for the findings requitet, to the issuance or continuance of a permit or license by the Commission.                  1. Power Reactors                      


===7. Transportation===
===6. Product    i===
3. Fuels and Materials Facilities
                                                                                      2.  Research and lest Reacro's            7. Trans~oo'ttinn
8. Occupational Health Published guides will be revised periodically, as appropriate, to accommodate  
                                                                                      3. Fuels and Materials Facilitm        8,  Occupational Health Puhshrhed guides will lie revised periodically, as appropriae. to accommodate         4. Environmentat ard Siting             9. A',:Irust Review comments and to reflect new inlormation or eaperience.                               S.  Materials and Plant Protection        t
4. Environmental end Siting S. Antitrust Review comments and to reflect new information or experience.


5. Materials and Plant Protection
===0. General===
1


===0. General ===
aI, At Iea, one fiui-diamele, specimeni hom eacht                        or ColostruLtor, lhe reinforing liatr cliet!li
4. At least one full-diameter specimen from each bar size should be tested for each 50 tons or fraction thereof of reinforcing bars that are produced from each heat and used in Category I structures.


b. The test procedures should be in accordance with ASTM A-370-68, "Standard Methods and Definitions for Mechanical Testing of Steel Products," American Society for Testing and Materials.
====s. ty shoultjd he====
  *. sliv Should le tested Cor each 50 torns or 'ftrctioli
11r                                                                              controlled toI lie extent required to achieve lhe desled thefico" of reinforcing baOrs that aie prodticed ornm each                      material prrperty, :and conflriratI                        .ry ltslit- i sh1o1h.d he Ie*, and tised il Category I sitrutllures.                                      perforrmined.


c. The acceptance standards should be in accordance with ASTM A-615-72, "Standard Specification for Deformed Billet-Steel Bars for Concrete Reinforcement," American Society for Testing and Materials, including Supplemental Requirement (S-l), using full sections of the bars as rolled.d. Where any material property such as yield-strength-to-tensile-strength ratio, ductility, weldability or other similar property is relied upon by the designer or constructor, the reinforcing bar chemistry should be controlled to the extent required to achieve the desired material property, and confirmatory testing should be performed.
V. The le"I procedures should he in acckirdance wit hi .I\STN'I      A-370-0,S.          -StIand1rd    MtIhods arid            2.    Deformation I nspections Definitioms I*oI"Mechanical Tesiting of Steel Ploducls."
American Society o'Or          leSling iand i*aterials.                                 Del'irniitions on lhe reinforc:ing hais should tic c. The            jsnc              itandards should be in                inspected            to   assure    their        compliance          wihl  AS'IM
acc'ord:unce        wi III      ASTNI          A. 1.5-72.    "St:adaid          A.6 Ii-72 and wiili the licensee's specifieatLions pertinent Speciflica:ion for Dcl'Otned lillc-Steel                        iais for        to bonding and other purposes which are dependem on Conrrrcie                               


2. Deformation Inspections Deformations on the reinforcing bars should be inspected to assure their compliance with ASTM A-615-72 and with the licensee's specifications pertinent to bonding and other purposes which are dependent on the deformation characteristics
====k. inmerceent====
.3'Adequacy of deformations for splicing will be demonstrated by the tensile tests of the mechanical splice. See Safety Guide 10, "Mechanical (Cadweld)  
                                    .'ric:ri        Socieiy I'Or resting        lite def.or iniI t ion ch .ract erisi.sA.3
Splices in Reinforcing Bars of Category I Concrete Structures." 1.15-2}}
:nmid .Nhiefials.       ifrcludinw Srupplemient:1l Requiremuer (S-I). using ftill sectioh s ,*'" ite harý a,%,      *olled.                                                    d cl'o fi n allj Ii ,t,,t fo r N.llic.ing    w ill h ,.e
                                                                                      3 ,'ld c.q ija *.y (iI'
      d. M\ier*, anry material properly such is yield- der 'n r: t I te'd      ,s lht tensile cests o(i ilhic nect-mi*.;, st l .ic',See
                                                                                                        1%
  It'in l.tIII-Io-[Onsile.streI)-thI ratio. ducilily. weldabilitv                SaI'.ty (.uid, i*t. "Mc.t.hnicul (Cadweld) Splices in Reinf6:i1,'
,M 4,lhj.'i .',imdLIar )lo)pety is relied upon hV the designer                  liars of C'atcrory I (oncre te Sirtic. ti.S."
                                                                        I. I -2.}}


{{RG-Nav}}
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Latest revision as of 10:12, 4 November 2019

Testing of Reinforcing Bars for Category I Concrete Structures
ML13350A368
Person / Time
Issue date: 12/28/1972
From:
US Atomic Energy Commission (AEC)
To:
References
RG-1.015, Rev. 1
Download: ML13350A368 (2)
v • d • e


Revision I

12/28/72

.REGULATORY GUIDE

U.S. ATOMIC ENERGY COMMISSION

DIRECTORATE OF REGULATORY STANDARDS

REGULATORY GUIDE 1.15 TESTING OF REINFORCING BARS FOR CATEGORY I

CONCRETE STRUCTURES'

A. INTRODUCTION

specimens indicates that the tensile and yield strengths of the full diameter bars may be lower than the ValIe.,,

General Design Criterion I of Appendix A it) 10 that ate obtained using reduced diameter -pcinieis. The ClFR Part 50, "General Design Criteria for Nuclear variatinns are generally greater in bar size, No. 14 and Power Plants," requires that structures, systems and larger. Thus, the evaluation of the desigii margin tit components important to safety be designed. fabricated. safety in the slrticture may not be conservative if it is erected, and tested to quality standards commensurate based upon test results obtained from teduced diameter with the importance of the safety function to be specimens.

performed. This guide describes an acceptable method for implementing this criterion with regard to tests and ASTM A-615-72 requires only one tension test inspections of reinforcing bars for Category I concrete specimen per heat if all bars from a single heat differ in structures. 2 The Advisory Committee on Reactor size by less than three designation numbers: only two Safeguards has been consulted concerning this guide and specimens are required in other cases. Because each heat has concurred in the regulatory position. may contain from 50 to 250 tons of steel, the fraction of the reinforcing bars that are tested may vary by a

B. DISCUSSION

factor of 5. A more consistent basis for sampling can he obtained by choosing the test specimens on the basis ,,1 The tensile strength of concrete structures the number of reinforcing bars or the weight of important to safety depends upon reinforcing bars reinforcing.

imbedded in the concrete. The contribution of the concrete to the tensile strength of the structure is Special chemistry requirements have occasionally minimal and :hus generally disregarded. The tensile been placed on somne reinforcing bars. and checks should strength of reinforcing bars is usually tested in be made that any such requirements are being met.

accordance with ASTM A-615-72. "Standard Specification for Deformed Billet-Steel Bars for Since some mechanical splice configurations may Concrete Reinforcement", American Society for Testing require deformations that exceed the minlimum and Materials. This specification permits the tensile test requirements set forth in ASTM A-615-72. it is specimens to be either of full bar diameter or of a impertant to inspect the deformations it) assute that reduced diameter. Comparison of test data obtained they will permit a reliable mechanical splice to le made.

with both full bar diameter and reduced diameter

C. REGULATORY POSITION

This guide is a revision of former Safety Guide IS. As such, it is applicable to water-cooled nuclear power reactors. I. Yield Strength and Tensile Strength Tests tSt'ructures, systems, and components of a nuclear power Reinforcing bars used for concrete structures plant are designated as Category I if they are designed to withstand the effects of the Safe Shutdown Earthquake (SSE) important to safety should be tested to verify their yield and remain functional. See Safety Guide 29, "Seismic Design strength and tensile strength -,3 follows:

Classification."

USAEC REGULATORY GUIDES Copies of published guides may be obtained by request ndicating the divisions desired to the US. Atomic Energy Commission, Washington. O.C. 20545.

Regulatory GAides ate issued to describe and mrAke available to the public Attention: Director of Regulato'y Standards. Comrents and suggestions to'

methods accptrible to the AEC Regulatory staff of implementing specific pars of irrtIOVeMOInts in these guides are encouraged and should be sent to the Secretary the Commission's regulations, to delineate techniques used by the staff in of the Commission. US. Atomic Energy Commission. Washington, D.C. 20545, evaluating uJlecific problems or postulated accidents, or to provide guidance to Attention; Chief. Public Proceedings Stall.

applicantls. Regulatory Guides are not substitutes for regulations and compliance with them is not required. Methods and solutions different from those setOut in The guides are issued in the following ten broad diwvrions.

the guides will be acceptable it they provide a basis for the findings requitet, to the issuance or continuance of a permit or license by the Commission. 1. Power Reactors

6. Product i

2. Research and lest Reacro's 7. Trans~oo'ttinn

3. Fuels and Materials Facilitm 8, Occupational Health Puhshrhed guides will lie revised periodically, as appropriae. to accommodate 4. Environmentat ard Siting 9. A',:Irust Review comments and to reflect new inlormation or eaperience. S. Materials and Plant Protection t

0. General

aI, At Iea, one fiui-diamele, specimeni hom eacht or ColostruLtor, lhe reinforing liatr cliet!li

s. ty shoultjd he

  • . sliv Should le tested Cor each 50 torns or 'ftrctioli

11r controlled toI lie extent required to achieve lhe desled thefico" of reinforcing baOrs that aie prodticed ornm each material prrperty, :and conflriratI .ry ltslit- i sh1o1h.d he Ie*, and tised il Category I sitrutllures. perforrmined.

V. The le"I procedures should he in acckirdance wit hi .I\STN'I A-370-0,S. -StIand1rd MtIhods arid 2. Deformation I nspections Definitioms I*oI"Mechanical Tesiting of Steel Ploducls."

American Society o'Or leSling iand i*aterials. Del'irniitions on lhe reinforc:ing hais should tic c. The jsnc itandards should be in inspected to assure their compliance wihl AS'IM

acc'ord:unce wi III ASTNI A. 1.5-72. "St:adaid A.6 Ii-72 and wiili the licensee's specifieatLions pertinent Speciflica:ion for Dcl'Otned lillc-Steel iais for to bonding and other purposes which are dependem on Conrrrcie

k. inmerceent

.'ric:ri Socieiy I'Or resting lite def.or iniI t ion ch .ract erisi.sA.3

nmid .Nhiefials. ifrcludinw Srupplemient:1l Requiremuer (S-I). using ftill sectioh s ,*'" ite harý a,%, *olled. d cl'o fi n allj Ii ,t,,t fo r N.llic.ing w ill h ,.e

3 ,'ld c.q ija *.y (iI'

d. M\ier*, anry material properly such is yield- der 'n r: t I te'd ,s lht tensile cests o(i ilhic nect-mi*.;, st l .ic',See

1%

It'in l.tIII-Io-[Onsile.streI)-thI ratio. ducilily. weldabilitv SaI'.ty (.uid, i*t. "Mc.t.hnicul (Cadweld) Splices in Reinf6:i1,'

,M 4,lhj.'i .',imdLIar )lo)pety is relied upon hV the designer liars of C'atcrory I (oncre te Sirtic. ti.S."

I. I -2.


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