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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 U.S. ATOMIC ENERGY COMMISSION
DIRECTORATE  
.REGULATORY GUIDE
OF REGULATORY  
DIRECTORATE OF REGULATORY STANDARDS
STANDARDS REGULATORY  
REGULATORY GUIDE 1.15 TESTING OF REINFORCING BARS FOR CATEGORY I
GUIDE 1.15 TESTING OF REINFORCING  
CONCRETE STRUCTURES'
BARS FOR CATEGORY I 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.
General Design Criterion I of Appendix A it) 10
ClFR Part 50, "General Design Criteria for Nuclear Power Plants," requires that structures, systems and components important to safety be designed. fabricated.


This guide describes an acceptable method for implementing this criterion with regard to tests and inspections of reinforcing bars for Category I concrete structures.
erected, and tested to quality standards commensurate with the importance of the safety function to be performed. This guide describes an acceptable method for implementing this criterion with regard to tests and inspections of reinforcing bars for Category I concrete structures. 2  The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position.


2  The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position.
==B. DISCUSSION==
The tensile strength of concrete structures important to safety depends upon reinforcing bars imbedded in the concrete. The contribution of the concrete to the tensile strength of the structure is minimal and :hus 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 IS. As such, it is applicable to water-cooled nuclear power reactors.
 
tSt'ructures, 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 ValIe.,,
that ate obtained using reduced diameter -pcinieis. The variatinns are generally greater in bar size, No. 14 and larger. Thus, the evaluation of the desigii margin tit safety in the slrticture may not be conservative if it is based upon test results obtained from teduced diameter specimens.
 
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 he obtained by choosing the test specimens on the basis ,,1 the number of reinforcing bars or the weight of reinforcing.
 
Special chemistry requirements have occasionally been placed on somne 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 minlimum requirements set forth in ASTM
A-615-72. it is impertant to inspect the deformations it) assute that they will permit a reliable mechanical splice to le made.
 
==C. REGULATORY POSITION==
I.
 
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 -,3 follows:
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 set Out in The guides are issued in the following ten broad diwvrions.


==B. DISCUSSION==
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.
The tensile strength of concrete structures important to safety depends upon reinforcing bars imbedded in the concrete.
 
===1. Power Reactors ===


The contribution of the concrete to the tensile strength of the structure iF minimal and thus generally disregarded.
===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 appropria


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.
====e. to accommodate ====
4. Environmentat ard Siting
9. A',:Irust Review comments and to reflect new inlormation or eaperience.


This specification permits the tensile test specimens to be either of full bar diameter or of a reduced diameter.
S. Materials and Plant Protection t


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.
===0. General===


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.
aI, At Iea, one fiui-diamele, specimeni hom eacht
11r
*. sliv Should le tested Cor each 50 torns or 'ftrctioli thefico" of reinforcing baOrs that aie prodticed ornm each Ie*,
and tised il Category I sitrutllures.


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.
V. The le"I procedures should he in acckirdance wit hi .I\\STN'I
A-370-0,S.


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.
-StIand1rd MtIhods arid Definitioms I*oI" Mechanical Tesit ing of Steel Ploducls."
American Society o'Or leSling iand i*aterials.


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
c.
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:  
The jsnc itandards should be in acc' ord:unce wi III
Chief, Public Proceedings Staff.applicants.
ASTNI
A.


Regulatory Guides are not substitutes for regulations and compliance with them is not required.
1.5-72.


Methods and solutions different from those set out in The guides are issued in the following ten broad divisions:
"St:adaid Speciflica:ion for Dcl'Otned lillc-Steel iais for Conrrrcie
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
====k. inmerceent ====
.'ric:ri Socieiy I'Or resting
:nmid
.Nhiefials.


===7. Transportation===
ifrcludinw Srupplemient:1l Requiremuer (S-I). using ftill sectioh s ,*'" ite harý a,%,  
3. Fuels and Materials Facilities
*olled.
8. Occupational Health Published guides will be revised periodically, as appropriate, to accommodate
4. Environmental end Siting S. Antitrust Review comments and to reflect new information or experience.


5. Materials and Plant Protection
d.
1


===0. General ===
M\\ier*, anry material properly such is yield- It'in l.tIII-
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.
Io-[Onsile.streI)-thI
ratio. ducilil


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.
====y. weldabilitv====
,M 4,lhj.'i .',imdLIar )lo)pety is relied upon hV the designer or ColostruLtor, lhe reinforing liatr cliet!lis.ty shoultjd he controlled toI lie extent required to achieve lhe desled material prrperty, :and conflriratI
.ry ltslit- i sh1o1h.d he 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.
2.


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
Deformation I nspections Del'irniitions on lhe reinforc:ing hais should tic inspected to assure their compliance wihl AS'IM
.3'Adequacy of deformations for splicing will be demonstrated by the tensile tests of the mechanical splice. See Safety Guide 10, "Mechanical (Cadweld)  
A.6 Ii-72 and wiili the licensee's specifieatLions pertinent to bonding and other purposes which are dependem on lite def.or iniI t ion ch .ract erisi.sA.3
Splices in Reinforcing Bars of Category I Concrete Structures." 1.15-2}}
3 ,' ld c.q ija *.y (iI'
d cl'o fi n allj I i ,t,,t fo r N.l lic.ing w ill h ,.e der 'n r: I
,s t te'd
1% lht tensile cests o(i ilhic nect-mi*.;,
st l .ic', See SaI'.ty (.uid, i*t. "Mc.t.hnicul (Cadweld) Splices in Reinf6:i1,'
liars of C'atcrory I (oncre te Sirt ic. ti.S."
I. I -2.}}


{{RG-Nav}}
{{RG-Nav}}

Latest revision as of 00:16, 11 January 2025

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 U.S. ATOMIC ENERGY COMMISSION

.REGULATORY GUIDE

DIRECTORATE OF REGULATORY STANDARDS

REGULATORY GUIDE 1.15 TESTING OF REINFORCING BARS FOR CATEGORY I

CONCRETE STRUCTURES'

A. INTRODUCTION

General Design Criterion I of Appendix A it) 10

ClFR 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. This guide describes an acceptable method for implementing this criterion with regard to tests and inspections of reinforcing bars for Category I concrete structures. 2 The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position.

B. DISCUSSION

The tensile strength of concrete structures important to safety depends upon reinforcing bars imbedded in the concrete. The contribution of the concrete to the tensile strength of the structure is minimal and :hus 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 IS. As such, it is applicable to water-cooled nuclear power reactors.

tSt'ructures, 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 ValIe.,,

that ate obtained using reduced diameter -pcinieis. The variatinns are generally greater in bar size, No. 14 and larger. Thus, the evaluation of the desigii margin tit safety in the slrticture may not be conservative if it is based upon test results obtained from teduced diameter specimens.

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 he obtained by choosing the test specimens on the basis ,,1 the number of reinforcing bars or the weight of reinforcing.

Special chemistry requirements have occasionally been placed on somne 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 minlimum requirements set forth in ASTM

A-615-72. it is impertant to inspect the deformations it) assute that they will permit a reliable mechanical splice to le made.

C. REGULATORY POSITION

I.

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 -,3 follows:

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 set Out 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 appropria

e. 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

11r

  • . sliv Should le tested Cor each 50 torns or 'ftrctioli thefico" of reinforcing baOrs that aie prodticed ornm each Ie*,

and tised il Category I sitrutllures.

V. The le"I procedures should he in acckirdance wit hi .I\\STN'I

A-370-0,S.

-StIand1rd MtIhods arid Definitioms I*oI" Mechanical Tesit ing of Steel Ploducls."

American Society o'Or leSling iand i*aterials.

c.

The jsnc itandards should be in acc' ord:unce wi III

ASTNI

A.

1.5-72.

"St:adaid Speciflica:ion for Dcl'Otned lillc-Steel iais for Conrrrcie

k. inmerceent

.'ric:ri Socieiy I'Or resting

nmid

.Nhiefials.

ifrcludinw Srupplemient:1l Requiremuer (S-I). using ftill sectioh s ,*'" ite harý a,%,

  • olled.

d.

M\\ier*, anry material properly such is yield- It'in l.tIII-

Io-[Onsile.streI)-thI

ratio. ducilil

y. weldabilitv

,M 4,lhj.'i .',imdLIar )lo)pety is relied upon hV the designer or ColostruLtor, lhe reinforing liatr cliet!lis.ty shoultjd he controlled toI lie extent required to achieve lhe desled material prrperty, :and conflriratI

.ry ltslit- i sh1o1h.d he perforrmined.

2.

Deformation I nspections Del'irniitions on lhe reinforc:ing hais should tic inspected to assure their compliance wihl AS'IM

A.6 Ii-72 and wiili the licensee's specifieatLions pertinent to bonding and other purposes which are dependem on lite def.or iniI t ion ch .ract erisi.sA.3

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

d cl'o fi n allj I i ,t,,t fo r N.l lic.ing w ill h ,.e der 'n r: I

,s t te'd

1% lht tensile cests o(i ilhic nect-mi*.;,

st l .ic', See SaI'.ty (.uid, i*t. "Mc.t.hnicul (Cadweld) Splices in Reinf6:i1,'

liars of C'atcrory I (oncre te Sirt ic. ti.S."

I. I -2.


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