irloo,(.)tAS 1163-1991Lt*Australian Standard@Structural steel hollow sectionsThis Australian Standard was preparedby Committee BD/23Structural Steel. Itwas approved on behalf of the Councilof Stinau.as Australiion 30 August l99land published on l5 November 1991.The following interests are represented on Committee BD/23:Australian Chamber of ManufacturersAustralian Institute of Steel ConstructionAUSTROADSBureau of Steel Manufacturers of AustraliaConfederation of Australian IndustryInstitute of Steel Service Centres of AustraliaMaster Builders Construction and Housing Association AustraliaMetal Trades Industry Association of AustraliaRailways of Australia CommitteeSteel Reinforcement Institute of AustraliaUniversity of QueenslandUniversity of SydneyReview of Australian Standards. To keep abreost ofprogre-ss in industry, Austrolian.Stondards are subiect\\i'iiriiii, 'i ,iiiii,-ira ort kept up-to-date by theisi.ue -ensure d amendments or new editions as necessory. It.[ipiiiint *erefore that SlandZrds users that ihey ore in possession of the latest edition, andany amendments thereto.fiil detaik ofall Australian Stondards and related publications will befound in the Stondards Austrsliaioiioiiei, oi Pubtications; this information is suppiemented each month b-y the mag.azine 'The AustralianStsnd;rd', which subsgibirg ^\"imbert receive, iid which gives details of new publicotions, new editionsand amendments, and of withdrau'n Standards.iuSgistions for improvemenrs to Austrolian Standards, addressed to the head office. of Standards Australia,iri\"ietrom\"ea. N6tification of ony inaccuracy or amibiguity found. in an Australian Standard should be,\"iaiiiniil delai in order\"thai the mattei moy be lnvestigated and oppropriate oction taken.This Standard was issued in draft form for comment as DR 90108'IrIl_AS l163-1991PREFACEQ:ThisStandardwaspreparedbytheStandardsAustraliaCommitteeonStructuralsteeltosupersedechanges:the following incorporates AS 1l;3-iq8f . f6it 6Aition gradecold-formed of a new The inclusion grades' and all H (hot-formed) of C200 (a) The deletion c250L0, c350L0 andnamely impaii;!ii;;;\";;;;-0'4, with guaranteed c450 and srades c450L0.to reflectreduced c350 are c250 and of grades thetensile.strengths change, above with the In line sections'on cold-formed obtained ;il.;;\"dii;s analysis'on chemical (b) A revised table radius'inside on minimum table (c) An amended test requirements'on tensile table (d) A revised to AS 2706'of reference in lieu of numbers B on rounding Appendix previous of the (e) The deletion CONTENTSPageISCOPE..,.DOCUMENTS 2REFERENCED DEFINITIONSDESIGNATIONPROCESS5STEELMAKING 6CHEMICAL COMPOSITTONPROPERTIESAND GEOMETRICAL MASS 7DIMENSIONS, 8DIMENSIONAL TOLERANCESTOLERANCE9MASS l0FREEDOM FROM DEFECTSDEFECTSllREMOVAL OF SURFACE t2REMOVAL OF UPSETl3MECHANICAL TESTINGFOR MECHANICAL TESTINGOF TEST PIECES l4PREPARATION ..\"l5MECHANICAL TEST REQUIREMENTS l6MECHANICAL PROPERTIESt7ROUNDING OF NUMBERSl8MARKINGAPPENDICESGUIDELINESAPURCHASING COMPLIANCE WITHTHIS STANDARDBMEANS FOR DEMONSTRATING OF CROSS-SECTIONAND PROPERTIES cDIMENSIONS OF THIN WALLLO COMPLIANCEGRADE VERIFYING FOR METHOD DSECTIONS- STANDARDS AUSTRALIA@ CoPYright JJJlr-^4446666677888l0llIJf/bemav Australia bl Standards UsersofStandardsareremindedthatcopyright'subsistsinallStandardseystll|iapublicationsandsofrlr.are.Exceptwherethot tort*lit ptoduced Standards\"\"0.i'.!pi'i,ti;.il;;i9:9:o-19tt;\";fu-utlcations from Act allows in-uriting permission Copyright prior wit'hour means by any or tiinsmirte'd form any onsystem.in ln a retrteval and information stored permission reproduced, puy*.nt\"'h-tqtittts'for rovarti \"ppiopiiaie on \"n permission condirional may be Australia. Australia'rovartiel\"sfiJuit';;;ir&J to iti. ttlua offic! of Siandards sofrware commercial exclusivelyfor use copied to be a Standard pages'of content technical of the percent l0 permit up to will Australia Standards Australia'to Standards a?vice Jiiii.-siina\"ra *ithout d;;;;';T;'r;t;iit\"; by purchasers in-house for no royaltyprograms software computer material_in . its copyriglt of the inclusion permit will also Australia Standards of the programs'the creators ln-t',i,ir.-bv provided ,r.n'p?\"'iritit#;.;J;;;i;iiuitv paymenr thewhenever and that it.ij undated the Standard edition.of current the is from used materiar that to ensure be taken identifiec'care should be clearlv therefore a\". i'iit't-S;;\"d;t:';i;;ld or r.iir.i.'Tt.';;t;t;a is amended Standard or inor without payment' commercially''with to b9.u:e^d pjggraml software in pnnt form or in computer at any time'of material Australia The use by Stan'dards rovuriv.Thls policy *ay ue uaii-ed paymenr or a to the is subject contracts commercial L| / 1992-t2-21AS I 163/Amdt AUSTRALIASTANDARDS Amendment No. 1toAS 1163-1991hollow sectionsStructural steel REVISED TEXTThe l99l edition of AS 1163 is amended as follows; the amendment should be inserted in the appropriate place.SIJMMARY: This Amendment applies to Figure C2.Published on 2l December 1992.AMDr Pages 16 and 17 Figure C2H|;t Column 7, delete existing'second moment of area (I)' for'Outside diameters 273'1,219'l and'\\\\-, l\"6i 168.3 mm' and substitule the following:67.'l47.736.430.324.218.6't1.710.7as shown in the attached amended Figure C2.(\\rrlsBN 0 7262 7910 2AJ\\IDTNo. IDEC.t992AS l163-199rtOl6ow!\\r.\\,,--l--II.E€ o=NOEE88P FEooc,o@oro 8oolo 88 8olFAl e8 8@\\fo) 8t EEEor@ro(.1(\\,lN (/)Nr NFF FF!t'6io EEEPE!Eroaqo@oo F6(b orF.At o(o\ 6@ot (f)o\ F(\\lr (otc) o;- sfc)ol oc)@ c)olF ('rorF-9rONFEco.=E oPg;\\Ea? a? o?EF-COO, OrOr loIOI.() Ctt:t -(\\l(D (\\l (\\lOl OrOlFFr('rsf$d)O)CDFFF FFF FFF FFFdofd,Eo)LEOOO ;6O OOO |Ex$fi€ \"ou)olr(Y' FrO(\\l Ort@ OO- OO)t() l\\lO
OrN:f cDs(ot(f)ot_ocEIrFEF-EoooEo(ol.l) FN$oO\O E(')o(f) to(V)F FLt)N-oci (O\\fC)+c/r(\\l o(r)@ gr(\\lF orno(\\lFrlOr@ F*r-14 to (18Not specified(see Note)NOTE: Tolerances should be specified at lime of order'COPYRIGHTs AS ll6J-t991g.2 Cross-section The marimum permissible variation in the cross-sectional dimensions of a hollow,..tion shall conform io ttre appropriate limits given in Figures I and 2.A thickness tolerance of = l0 percent shall apply'The radii of rhe .-orners of square hollorv sections (SHS) and rectangular hollow sections (RHS) shallbe as folloss:(a) \\larimum outside radius: 3t.(b) \inimum outside radius: I '5t (for RHS andSHS with perimeter equal to 50 x 50 or less)'l.8l (for RHS andSHS with perimeter greater than 50 x 50)'shere t is the section thickness' in millimetres'millimetresSpecified outsidediameterdiameter<50+ - 00.8.4>50FIGURE 1MAX|MUMPERMISS|BLEVAR|AT|oN|NcRoSS-SEcT|oNoFCIRCULAR HOLLOW SECTIONSOutside dimension Maximum (b) or (d)of sidein specitied Permissible variationof sideoutside dimensionMaximum square Permissible at cornersout'of'mmmmdegree<50>50t0.01b or 10.01dFIGURE 2 MAXIMUM PERMISSIBLE VARIATION IN CROSS-SECTION OFSQUARE AND RECTANGULAR HOLLOW SECTIONSCOPYRIGHTAS il63-1991t.3StraightnessThemaximumpermissiblevariationfromstraightnessinalengthofhollowsectionproduct sfi-all not exceed:Specified length500E.4 Twist (rectangular sections)For rectangular hollow sections, the maximum value of Z (seeFigure 3) shall not exceed 2 mmplus 0.5 mm Per metre length'FIGURE3MEASUREMENToFTW|SToFREoTANGULARHoLLoWSECT|oNSgMASSTOLERANCEThemassofalengthofhollowsectionshallbenotlessthan0.96timesthe specified mass.a10 FREEDOM FROM DEFECTS - The section shall be free from lamination' surface flaws nd\"in.i a.r*ls d.ltimentul to its use for structural purposes'11 REMOVAL OF SURFACE DEFECTSll.lGrindingWhenremovalofsurfacedefectsuvcr[a]5^isadopted'thegroundareashallbewell flared and the remaining wall thickness in the giound a.ea straii 6e not lesi than 90 percent ofthe nominal thickness.metal welding-used in the repair of surface defects shall be performed inaccordance ll.2 Depositing weld with AS 15.1, using fow-tr'drogen'.i\".tioatt complying with AS 1553'welds shall be sound, the weld metal being thloroughly fused without undercutting or overlap' Theweld metal shall project at least 1.5 mm uuo\". trt.-ioiled surface and the projecting metal shall be;il;;d bteiln.ii\"d flush with the rolled surface'|2REMOVALoFUPSETHollowsectionsproducedbyelectricresistanceweldingshallhavetheexternal uPset removed.13 MECHANICAL TESTING13.1 General Test pieces for tensile tests, impact tests and cold flattening tests shall be taken froma single test sPecimen'Test pieces shall be in the same condition as the sections that they represent'13.2 Orientation of test Pieces13.2.1 Tensile test and impuct test The test piece shallbe cut such that the major axis is in thelongitudinal direction.. 13.2.2 Cold flattening test The test piece shall be cutin the transverse direction'13.3 Position and orientation of test piece13.3.1 Tensile test and impact test The.test piece shall be sele-cted from any position along the lengthof the test specime\" ,;;h1h;1';h; ,;d;i;i*.inii J cturse l3'l are complied with'13.3.2 cold test A test piece shall be cut from one end of a test specimen which containsa longitudinal flattening weld.COPYRIGHTvAS l163-199114 PREPARATTON OF TEST PIECES FOR MECHANICAL TESTINGl4.l develops flaws General It shall during preparation be permissible to discard pand to submit a test iece another which shows test piece.defective machining or14.2 Tensile test pieces14.2.7 Form below:of test piece The tensile test piece shall be in the form given in either Item (a) or (b)(a) A-test piece ThelocationofthetestpieceshallbeasspecifiedinClause with dimensions conforming to those specified in AS 1391, 14.2.2orClause cut from the 14.2.3,asappropriate.test specimen.(b) A length of the full section test specimen.The test piece shall be aged in accordance with Clause 14.4.14.2.2 Circular flattened the test pbetween.gauge hollow sections (CHS) iece marks. shall be taken For a length The tensile test piece cut from a test specimen shall not befrom approximately of circular hoilow 90 degrees from the weld.section containing a longitudinal weld,14-.2.3 taken f^ Rectongular rom hollow sections (RHS) The tensile test piece cut from a test longitudinal any side weld.midway between and excluding the corners. The test piece specimen shall shill not include bea1.4.1 Impact piece th-e longitudinal test Three of the axis of the hollow test pieces section, with shall the be prepared from each specimen pand cut parallel toeither section. For rectangular in accordance the long hollow sections, the aiis of the notch erperidicular test specimen siali be to the rolled taken from the middle surfaceofIt shall with AS or short side be permissible 14.2 using, remote from the weld (see where necessary, Figure 4). The test piece preparedthelargesi practicable shall be to submit another test to discard a test piece.piece which shows defeciive machining subsidiary test piece.or develops flaws and14.4 to a temperature Ageing trealment Prior between 150\"c to tensile or and 200\"c for impact a period testing, the test pieces not less than 15 shall min.be aged by heating14.5 of a finished lele_qh Cold flattening test The the test piece shall bof a circular hollow test piece shall e not less than 40 msm. All ection be which taken in the form of a cross-section burrs contains a longitudinal weld. shall be removEd Tfrom one he endbefore resrins.length ofAlternativeNotchla) Circular hollow section{bl Rectangular hollow sectionFIGURE 4 POSITION LOCATION Or resr SPEcIMEN FOR IMPACT AND TEST TESTPIEoE NoTcH15 MECHANICAL TEST REQUIREMENTS15.1 Tensile sllat.qilg AS 1391.when test The tensile approaching the yield point test shall be carried out in shall lie within the highest range accordance with AS of strain 1391. The rare rare given oinfElongation results sectional shall be reported on a gauge length Lo = 5.65JSo where with ISO area. Conversion of results 2566-1.from a non-proportional gauge length S. is the originat shall cross-be in accordance15.2 Impact test Impact tests shall be performed at 0'C in accordance with AS 14.2.COPYRIGHTAS I t63-199t15.3 Cold parallel plane suifaces flattening test The flattening test piece-shall be flattened at room temperature betweentwo with the weld Iocatei as follows in relation to the direction of flattening:(a) For d\" < 60 mm: at 45 degrees(b) For d\" > 60 mm: at 90 degreeswhere do is the nominal outside diameter of the circular hollow section, in millimetres.The test piece shall be flattened until the distance between the surfaces is 0.75d\".16 MECHANICAL PROPERTIES16.l Tensile test When tested in accordance with Clause 15.1, the yield strength, tensile streng,thuna .longuiion of the t.rl pi..iin\"it ionforrn to the limits given in Table 3 for the appropriate grade'16.2 Impact test When tested in accordance with Clause 15.2, the absorbed energy value (-I) resultingfrom-(a) each individual test; and(b) the average of three tests;shall conform to the specified values given in Table 4 for the appropriate grade'16.3 Cold flattening test When tested in accordance with Clause l5'3, a test piece taken from acircular section with a iongitualnat weld shall show no signs of cracks or flau's. Superficial rupturesarising from surface impeifections shall not be cause for rejection.TABLE 3TENSILE TEST REQUIREME\\TSIlinimum elongrtion as N proporlion of lheGradeMinimum Minimum tensilegaugi length of 5.65VSostrength!ieldstrenglhpercentCircular hollowRectangular hollowMPaVPasectionssectionsc250, c250L0250320c350, c350L035013022t820l6c450, c450L0450500l6t4TABLE 4CHARPY V.NOTCH IMPACT TEST REQUIREMENTSMinimum absorbed energY, JTestSize of test PieceGradel0mm x l0mml0 mm x 7.5 mml0mm x 5mml0 mm x 2.5 mmocAverage oflndividualAverage ofIndividualAverage ollndividualAverage oflndividual3 teststest3 teststest3 teststest3 teststestc250L002'72022l6l8IJ9-7c350L00272022l6l8IJ9c450L002'72022t6t8l39NOTE: For l0 x 10, l0 x 7.5, l-pioauit 0 x 5 or l0 x 2.5 mm tesr piece sizes where it is not.practical lo machine from product'ir is-permissiule to disignare itri, ur grade L0 provideil requirements specified in Appendir D are metI7 ROUNDING OF NUMBERS11 .l General For the purpose of deciding whether a particular requirement^of this Standard iscomplieO *itfr, ttr. Aet.iniint uutu., observ& or calculatid, shall be rounded off in accordance withAS 2706. The number-\"i-iig\"ifi*nf places retained in the rounded-off values shall be the same asi6uioi the specified value i-n the appropriate material Standard.l:.2 Tensile properties The determined value of tensile strength shall be rounded off to the nearestl0 Mpa and the Oetermined-v\"fr. of yield strength shall be rounded off to the nearest 5 MPa'l8 MARKING The material shall be marked or tagged (for bundles)-(a) to identify the manufacturer;(b) to indicate the grade of steel (see Clause 4);(c) to enable product dimensions to be identified with this Standard; and(d) with a serialized identification number.COPYRIGHT9AS l163-1991Where marking is by means of die-stamping, low-stress stamps may be used,vNOTES:I Manufacturers making a statement of compliance with this Australian Standard on a product, or on packaging or promotional-material related to that product, are advised to ensure that such compliance is capable of being ueiifiia. 2 Independent certification is available from Standards Australia under the StandardsMark Product Certification Scheme.The StandardsMark, shown below, is a registered certification trade mark owned by Standards Australia and grantedunder licence to manufacturers whose products comply with the requirements of suitible Australian Standards and whooperate sound quality assurance programs to ensure consistent product quality.3 Further.information on product certification and the suitability of this Standard for certification is available from StandardsAustralia's Quality Assurance Services, 80 Arthur Street, North Sydney, N.S.W., 2060.COPYRIGHTAS I163-1991l0APPENDIX APURCHASING GUIDELINES(Informative)AI INFORMATION TO BE SUPPLIED BY THE PURCHASER ThC.PUTChASCT.ShOUId SUPPIY;h; f\"li\";ifilnioin1ution it ttre time of enquiry or order, after making due reference to the explanation,advice and iecommendations contained in this Appendix:(a) Designation of grade and Standard number.(b) Quantity and delivery instructions (dates, schedules, delivery point).(c) Dimensions of steel, e.g. section, length, mass per unit length applicable, bundle masses'NOTE: Attention is drawn to the desirability of specifying cross-sectional dimensions in terms of Appendix C' It shouldbe noted rhar sizes not fii;dln epfendix C'are nbi prlctriAea for specification purposes, but are subject to negotiation'(d) Whether a test certificate or certificate of compliance is required (see Paragraph A3).(e) Any information concerning processing or end-use that the purchaser considers would be ofassistance.(0 Whether it is the intention of the purchaser to inspect the steel at the manufacturer's works (seeParagraph ,A'4).(g) Special finish or coating, e.g. galvanized'(h) End finish.(i) Special tolerances.(i) Anv exceDtions to the Standard or any special or supplementary requirements, e'g. impact testingat -30oC for rolled over protection structure (ROPS)'(k) ' ' If impact testing other than that specified in this Standard is required, the test temperature, sizeof teit piece an? minimum absorbed energy value resulting from-(i) each individual test; and(ii) the average of three tests.A2 SUPPLEMENTARY TESTSA2.l Non-destructive testing If non-destructive testing is required by the purchaser, the test methodto be used and the fimits o-i'acceptance should be detJrmined at the time of enquiry or order'The test method should be in accordance with AS llTl and AS 2084, where appropriate'AZ.2 Independent test In the event of a dispute as to the compliance of the steel with this Standard,ih;;\"r;h;$i ina tn. iuppfi.i rttoutd agree'to have referee testing carried out bY:n.indenendentiiUo'ritory, whose resulti'should be aciepted as final. A laboratory registered. by the NationalAssociation of festine-Auti;;ifr; Auitritia, for the field and class of testing, is recommended'A3 CERTIFICATES OF COMPLIANCE AND TEST CERTIFICATESA3.l Certificates of compliance Certificates of compliance include a statement that the materialcomplies with this Standard'A3.2 Test certificates Test certificates show such results as may be required by agreement betweenthe purchaser and the manufacturer, relating to-(a) tests performed by the manufacturer for the purpose of establishing compliance with this Standard;and(b) additional tests as agreed between the purchaser and manufacturer.A4 INSPECTION If it is the purchaser's intention to undertake any-of the following functionsat the manufacturer's *oir.i, itris'strouta be notified at the time of enquiry or orde.r, and should beu..o1nptirtt.d in a rn\"n* *tri.tr *itl not interfere with the operation of the works:(a) Inspection of the product during manufacture.(b) witnessing of the selection and identification of test samples.(c) Witnessing the tests being performed.The manufacturer should afford the purchaser all reasonable facilities to establish that the steel complieswith this Standard.COPYRIGHTat'YllAS n63-1991APPENDIX BMEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD(Informative)81 SCOPE This Appendix sets out the following different methods by which compliance with thisStandard can be dembnstrated by the manufacturer or supplier:(a) Assessment by means of statistical sampling.(b) The use of Standards Australia's StandardsMark scheme.(c) Assurance using the acceptability of the supplier's quality system'(d) Other such means proposed by the manufacturer or supplier and acceptable to the customer.BZ STATISTICAL SAMPLING Statistical sampling is a procedure that enables 1nua. uUouritre quatity oiUut.tr.i ofGms after iportion.of decisions to beitems.ir,ii pioi.o\"r. *itt orilrbevalid if the sampling plan has-been nipeciing oi testing only.a those determined on a statistical basis andthe following requirements are met:(a) The sample is drawn randomly from_a population of product of known history that enablesr.erification ttrat tire pioauit *as made from known materials at essentially the same time byessenriall)' the same i.o..trer and under essentially the same system of control.(b) For each '-'manufacturer different situation, a suitable sampling plan. is defined' A sampling plan for oneof ii\"Ln i\"p\"Uiliry and product thiougtrput may not be relevant to anothermanufacturer producing the same items.In order for statistical sampling to be meaningful to the customer, the manufacturer or supplier needsio a.-onitrate how the a6oue'conditions hive been satisfied. Sampling and the.establishment of a;il;iirgllan itrouta be cairiea out in accoraance with AS I199, guidance to which is given in AS 1399.83 PRODUCT CERTIFICATION-STANDARDSMARX The general purpose of StandardsMark..rtifi.uti* is to providi independent assurance of theclaim by the manufacturer that products complywith the stated Australian or International Standard.It is a certification scheme that meets the criteria of an ISO Type i. tttut, ur *eli as full tvpl lJiting from independently sampl production 5 scheme as specified by ISO Guide '14and subsequent.verificationof conformance, it requires the rianufacturei to mainlain an effective quality plan to control productionto ensure conformance with the relevant Standard.The StandardsMark serves to indicate that the products consistently conform to the requirements ofthe Standard.The StandardsMark can only be used by manufacturers approved_and licensed by Standards Australiaand only when accompanied by the number of the applicable Standard.B4 SUPPLIER'S auAiteO anA registerei QUALITY quality SYSTEM Where the manufacturer or supplier can^demonstrate anmanagement system c_omplying with the requirements of the appropriate;;6;1\";d Xritiuiiuti or tirternational Standard for suppliers' qualityiysteTs..:uc! may provide the necessary confidence that the specified requirements will be met. The quahty assurance!,eponstration;Aifi;;;i\" ni.a t\" #\"g;d Uii*..n the customer and supplier and should include a qualitv orinspection and test plan to ensure product conformity.Guidance in determining the appropriate quality management system is given in AS 3900 and AS 39O4'B5 OTHER MEANS OF ASSESSMENT If the above methods are considered inappropriate'determination of cornptian.. *ittt the requirements of this Standard ry\"y be assess* on the basisoi itt. .esuttr of testin'g ioupled with the'manufacturer's guarantee of product conformance.Irrespective of acceptable quality levels (AQLs) or test frequencies, the responsibility remains withrhe manufacturer or irppii.i i,i aitiue.'priaucts that conTorm with the full requirements of theStandard.To assess compliance with this specification, consideration may be given to the results of testing inaccordance wiih Paragraphs 85.1, 85.2 and 85.3.B5.l Sampling of tensile test, impact test and cold flattening test Test samples should be takenas follows:(a) One sample for a batch not exceeding 50 tonnes.(b) One additional sample from the balance of the batch.COPYRIGHTAS 1163-1991 1285.2 Compliance Each batch complies with this Standard if alt of the samples tested give resultswhich are within the specified limits.If any of the properties of the tested samples give results outside the specified limits, the requirementsof Paragraph 85.3 apply.85.3 Retests85.3.1 Tensile test and cotd test If a retest is carried out, one or more of the followingprocedures should be adopted:flattening (a) Make two additional tests on test pieces from samples taken from a position as. near as practicalto the failed sample. The unit complies with this Standard provided both additional test piecescomply with Clauses 16.l and 16.3 as appropriate.(b) Make two test samples at random from the remainder of the test batch. If the test pieces fromboth additional sa*ples comply with Clauses l6.l and 16.3 as appropriate, the remainder complieswith this Standard.lf one of these additional samples fails to comply, the steel of the applicable test batch does notcomply with this Standard.(c) ' ' Make test samples from each rolled unit of steel and individually test_in accordance with thisStandard. If the test piece from the additional sample complies-with Clauses 16.l and 16'3 asappropriate, the rolled unit of steel complies with this Standard'(d) Reprocess (e.g. heat-treat) the unit which failed and perform another complete set of tests inaccordance *Tth eirug.adtt gS.t. The unit complies wittr this Standard if the reprocessed testpieces comply with Clauses 16.l and 16.3 as appropriate.The remainder of the test batch complies with this Standard provided it is reprocessed in the samemanner as th;;bo;e reprocessed unit and complies u'ith the requirements of Clauses 16.l and16.3 as appropriate.85.3.2 Impsct tests If a retest is carried out, one or more of the following procedures should beadopted:(a) If the average value of the three impact test results. is less than the specijie-d. minimum average'or if one ua-iue is less than the specified individual test value given in Table 4-(i) test three additional test pieces from the original sample in accordance with Clause 14.3; and(ii) add the results to those previously obtained and.calculate a new average. If the average valueof the six tests is not les; than the specified minimum average, and not more than one resultof the six tests is below the specified individual test value, then the unit complies with thisStandard.(b) Take two further test samples at random from the remainder of the test batch.If the resr pieces from both additional samples comply with Clause 16.2, then the remaindercomplies with this Standard.If one of these additional samples fails to comply, the batch (see Paragraph 85.l) does not complywith this Standard.(c) Take test samples from each rolled unit of steel and individually test in accordance with thisStandard.If the test piece from the additional sample complies with Clause 16.2, then the rolled unit ofsteel complies with this Standard.(d) Reprocess (e.g. heat-treat) the units which failed and perform another complete set of tests inaccordance with ParagraPh 85.1.IfthereprocessedtestpiecescomplywithClauses 16.l,16.2and,if applicable,Clause l6.3,thenthe unit complies with this Standard.The remainder of the tesr batch complies with this Standard provided it is reprocessed in the samemanner as the above ieproiessed units and complies with th-e requirements of Clauses 16.1 , 16.2and, if applicable, Clause 16.3.COPYRIGHT!II!13 AS I163-t991vAPPENDIX CDIMENSIONS AND PROPERTIES OF CROSS-SECTION(Normative)(see The following Figures Cl to C6 not restrictive Other sizes in variousare Clause 7). grades are also available in Australia. Although they appear in the following tables,certain sizes may not always be available in all grades.NOTE: Users are advised to check availability before incorporating hollow sections in major designs.IICOPYRIGHTAS l163-1991o='E€ sOoEI--T--C\\IEOOO (')t')ooOf-OC\ OOO FEooO)cr)(O t\\(OtO t'-sf O OO,Glr(orr,(') $c.)61tf'6?l, EEEPE!Cr) -(oEoooo C)Ol- -NO oro.t tri \\OO) r'-@o) @@@ (o@@O) (gf*@@O,f--NN rf)lr)rO $sf +$ CTJ(V)c)(Y)(f)dEloooq(o tr) ro (o(\\,lxtoF.-f- @@F o$fr€ 3EEooO- rf)oJ (oNN NrO gC)N C\sNro IOOcD$(oc\ocodc.j<'ioi-Orf*(Olr)$ItoO)c6E': qlq q':u?u?qooNO t'-C.) 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