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ASTM A184 - A 184M - 06 (2011).pdf

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ASTM A184 - A 184M - 06 (2011).pdf

Designation A184/A184M − 06 Reapproved 2011Standard Specification forWelded Deformed Steel Bar Mats for ConcreteReinforcement1This standard is issued under the fixed designation A184/A184M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers material in mat or sheet formfabricated from deformed steel bars to be used for thereinforcement of concrete. Mats consist of two layers of barsthat are assembled at right angles to each other. Mats areassembled by welding at the intersections.1.2 This specification is applicable for orders in eitherinch-pound units as Specification A184 or SI units asSpecification A184M.1.3 The values stated in either inch-pound units or SI unitsare to be regarded as standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with this specification.2. Referenced Documents2.1 ASTM Standards2A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA700 Practices for Packaging, Marking, and Loading Meth-ods for Steel Products for ShipmentA706/A706M Specification for Low-Alloy Steel Deformedand Plain Bars for Concrete Reinforcement2.2 U.S. Military StandardMIL-STD-129 Marking for Shipment and Storage32.3 U.S. Federal StandardFed Std No. 123 Marketing for Shipments Civil Agencies33. Ordering Information3.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material ordered to thisspecification. Such requirements shall include, but are notlimited to, the following3.1.1 Quantity,3.1.2 Size and spacing of members in each direction,3.1.3 Grade required Grade 40 or 60 [280 or 420],3.1.4 Type of steel as appropriate see Section 4,3.1.5 ASTM designation A184/A184M and year of issue.NOTE 1A typical ordering description is as follows 1000 bar mats toASTM A184– ; fabricated from Grade 40 bars to ASTM A615– ; 6 by 6in.; No. 4 by 120 in. longitudinal tip to tip, outer bars spaced 54 in.; No.3 by 60 in. transverse, outer bars spaced 114 in.[1000 bar mats to ASTM A184M– ; fabricated from Grade 280 bars toASTM A615M– ; 150 by 150 mm; No. 10 by 3000 mm longitudinal tipto tip, outer bars spaced 1350 mm; No. 10 by 1500 mm transverse, outerbars spaced 2850 mm.]4. Material and Manufacture4.1 Deformed steel bars of Grades 40 [280] used in themanufacture of welded mats shall conform to SpecificationA615 [A615M]. Deformed steel bars of Grade 60 [420] used inthe manufacture of welded mats shall conform to SpecificationA615 [A615M] or A706 [A706M].5. Fabrication5.1 Fabricated mats shall be composed of two layers of barssubstantially parallel and perpendicular to each other.5.1.1 Mats shall be assembled by means of welding toprovide attachment at intersections.5.1.1.1 Welds shall provide attachment at all exterior inter-sections and at not less than alternate interior intersections.5.1.1.2 The separation of 5 or less of all welded intersec-tions of any mat shall not be cause for rejection provided thatno more than half of the welds on any one bar are separated.5.1.1.3 Welding shall be performed in such a manner thatthe strength and ductility requirements of the material specifi-cations in Section 4 are met when a specimen is tested acrossa point of weld.NOTE 2Welding of the mat intersections has generally been per-formed without problems, but care should be taken when welding1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforcement.Current edition approved Nov. 1, 2011. Published November 2011. Originallyapproved in 1936. Last previous edition approved in 2006 as A184/A184M – 061.DOI 10.1520/A0184_A0184M-06R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standard’s Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn NPODS. Or visit http//assist.daps.dla.mil/online.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Copyright by ASTM Intl all rights reserved;reinforcing bars with carbon equivalent levels above 0.55 , in order toprevent cracking in the weld area.6. Mechanical Properties6.1 Mats shall be capable of withstanding a static load of150 lbf [670 N] exerted perpendicular to the plane of the mattending to separate the bars with no apparent loosening whenapplied to one intersection of the connected bars.6.2 Number of Tests6.2.1 One sample consisting of not less than two connec-tions on the same transverse member shall be tested forconformance with the provisions of 5.1.1.3 and 6.1 from each75 000 ft2[7000 m2] of mats or fraction thereof.6.3 Test Methods6.3.1 Tension test specimens for determining conformancewith 5.1.1.3 shall have a welded joint located approximately atthe center of the bar being tested, and the cross bar shall extendapproximately 1 in. [25 mm] beyond each side. All unit stressdeterminations shall be based on the nominal area calculatedusing the nominal diameter specified.6.3.2 Tests of connections against separation shall be per-formed on an assembled mat by placing blocks under adeformed bar in the upper layer and applying the prescribedload upon the bar in the lower layer.7. Size, Dimensions, and Tolerances7.1 Size and Spacing DimensionsThe sizes, spacings,dimensions, and arrangement of the bar mats shall conform tothe design specified by the purchaser. Bars shall extend beyondexterior intersections a distance of not less than 1 in. [25 mm].The spacing of bars shall average that specified in the design,and the space between individual bars shall not vary more than1⁄4 in. [6 mm] from that specified.7.2 Width and Length TolerancesThe overall length orwidth of the mats shall not be more than 1 in. [25 mm] greateror less than the specified dimension.8. Finish and Surface Condition8.1 The finished mats shall be free of injurious defects inmaterial or workmanship.8.2 Rust, surface seams, surface irregularities, or mill scaleshall not be cause for rejection provided the weight, dimen-sions including height of deformation, cross-sectional area, andtensile properties of a hand wire-brushed test specimen are notless than the requirements of this specification.9. Rejection and Retests9.1 Fabricated mats that do not meet the requirements ofthis specification shall be rejected and reported to the manu-facturer within 5 working days from the receipt of samples bythe purchaser.9.2 In case a test specimen fails to meet the provisions of6.1, two additional samples shall be selected and tested. Allretest specimens shall meet the requirements of this specifica-tion.9.3 In case a test specimen fails to meet the provisions of5.1.1.3, all of the remaining bars on the transverse membershall be tested and the average of all tests including theoriginal test shall meet the requirements specified in 5.1.1.3.10. Inspection and Test Reports10.1 InspectionThe inspector representing the purchasershall have free entry, at all times while work on the contract ofthe purchaser is being performed, to all parts of the manufac-turer’s plant that concern the fabrication of the mats ordered.The manufacturer shall afford the inspector all reasonablefacilities to satisfy the inspector that the mats are beingfurnished in accordance with this specification. All tests andinspection shall be made at the place of fabrication prior toshipment, unless otherwise specified, and shall be so conductedas not to interfere unnecessarily with fabricating operations.Inspection as to general workmanship shall be visual.10.2 Test Reports on Bar MaterialThe manufacturer shallsupply test reports showing that the material used in thefabrication of the mats as delivered has fulfilled the tension andbend test requirements of the specified type and grade de-scribed in Section 4. The reports shall show the manufacturer’stest identification numbers, including the identity of the mate-rial.10.3 A material test report, certificate of inspection, orsimilar document printed from or used in electronic form froman electronic data interchange EDI transmission shall beregarded as having the same validity as a counterpart printed inthe certifier’s facility. The content of the EDI transmitteddocument must meet the requirements of the invoked ASTMstandards and conform to any existing EDI agreement be-tween the purchaser and the supplier. Notwithstanding theabsence of a signature, the organization submitting the EDItransmission is responsible for the content of the report.NOTE 3The industry definition as invoked here is EDI is thecomputer-to-computer exchange of business information in a standardformat such as ANSI ASC X12.10.4 For Government Procurement Only Except as oth-erwise specified in the contract, the contractor shall be respon-sible for the performance of all inspection and test require-ments specified herein. Except as otherwise specified in thecontract, the contractor shall be permitted to use one’s own orany other suitable facilities for the performance of the inspec-tion and test requirements specified herein, unless disapprovedby the purchaser at the time of purchase. The purchaser shallhave the right to perform any of the inspections and tests at thesame frequency as set forth in this specification where suchinspections are deemed necessary to assure that materialconforms to prescribed requirements.11. Rehearing11.1 Samples tested in accordance with this specificationthat represent rejected material shall be preserved for 2 weeksfrom the date rejection is reported to the manufacturer. In caseof dissatisfaction with the results of the tests, the manufacturershall have the right to make claim for a hearing within thattime.12. Packaging and Package Marking12.1 Packaging, marking, and loading for shipment shall bein accordance with Practices A700.A184/A184M − 06 20112Copyright by ASTM Intl all rights reserved;12.2 When specified in the contract or order, and for directprocurement by or direct shipment to the U.S. government,marking for shipment, in addition to requirements specified inthe contract or order, shall be in accordance with MIL-STD-129 for military agencies and with Fed Std No. 123 for civilagencies.12.3 Each bundle of mats shall be marked with a suitabletag showing the name of the manufacturer and other markingto identify it with the order.13. Keywords13.1 concrete reinforcement; mats; steel barsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 phone, 610-832-9555 fax, or serviceastm.org e-mail; or through the ASTM websitewww.astm.org. Permission rights to photocopy the standard may also be secured from the ASTM website www.astm.org/COPYRIGHT/.A184/A184M − 06 20113Copyright by ASTM Intl all rights reserved;

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