I S0 I N TE RN ATI ON AL 1 44 S TAN D AR D Fi rst ed i t i on 991 - 06- 01 Certi fi cati on th e rei n forcemen t Sys t Cme parfi cu l i er ren forcemen t m- - e _ s ch e me d es de of for bars crete certi fi cati on stru cti on s steel en d es bat- res an d wi res stru ctu res et lils d ’ aci er pou r le b&t on Re f e ren ce z c! E% - - - - for _- - - I S0 n u m be r 1 44: 9 ( E) i I S0 1 44: 9 ( E) Fo reword I S0 ( th e I n tern ati on al fed erati on of of prepari n g tech n i cal wh i ch I n tern ati on al tech n i cal represen ted men tal an d to n ati on al 7, An n e x Al l or A I S0 an y pe rmi ssi o n Case ii bod y carri ed of th e wi th by for I SO, th e by at worl d wi d e Th e al so a th e I S0 su bj ect ri g h t for to be g overn - take part in th e El ectrotech n i cal stan d ard i zati on tech n i cal co mmi tte es Pu bl i cati on l east wo rk th rou g h org an i zati on s, I n tern ati on al voti n g approval in h as el ectrotech n i cal ad opted a ou t i n terested establ i sh ed l i son wi th is bod i es) 75% as of th e an are I n ter- member vote Stan d ard I S0 1 44 was prepared by Tech n i cal Co mmi tte e Steel of th i s I n tern ati on al reserved me an s, in in No Postal e part el ectron i c wri ti n g I n tern ati on al Pri n ted n ormal l y been bod i es req u i res a is me mber Stan d ard is for i n formati on on l y 991 ri g h ts by matters me mbe r Stan d ard I n tern ati on al al l ( I S0 I n tern ati on al in cl osel y Stan d ard s th e casti n g I SO/TC on I n tern ati on al ci rcu l ated h as n on - g overn men tal , ( I EC) Stan d ard i zati on ) me mbe r co mmi ttee col l aborates Co mmi ssi o n bod i es Each th at for bod i es Stan d ard s co mmi ttee on I S0 Draft stan d ard s co mmi ttees a wo rk Org an i zati on n ati on al fro m of or th e Org an i zati on 56 Swi tzerl an d l CH- 1 th i s pu bl i cati on mech an i cal , m ay i n cl u d i n g be pu bl i sh er for Stan d ard i zati on G e n kve 20 l reprod u ced ph otocopyi n g Swi tzerl an d or u ti l i zed an d in m i cro fi l m , an y fo rm wi th ou t I N TERN ATI ON AL Certi fi cati on sch e m e rei n forcemen t I S0 STAN DARD of for steel cre te bars i n tern ati on al certi fi cati on steel bars crete Stan d ard sch e me an d wi res stru ctu res wi th req u i remen ts su ch as I S0 for for in speci fi es ord i n ary ord er to speci fi ed 6935- l an d ru l es ti n u o u s I S0 in for a prod u cti on of rei n forcemen t of veri fy th e formi ty prod u ct stan d ard s Defi n i ti on s For th e certi fi cati on si sts of sch e me th e fol l owi n g ti n u o u s certi fi cati on to wh i ch th e su i tabi l i ty testi n g stag es: ( see i n tern al i n specti on cl au se cl au se - an d th e su pervi si on of prod u cer ( see by an extern al bo d y 6) N OTE I S0 of stan d ard s referen ce th i s in tai n th i s text, I n tern ati on al Stan d ard cati on , th e i n d i cated d ard s are ed i ti on s su bj ect ag reemen ts are based en cou rag ed pl yi n g th e i ty referen ce s fol l owi n g to mo st to At th e were th i s th e ed i ti on s of wh i ch , provi si on s ti me val i d an d of pu bl i - Al l stan - parti es I n tern ati on al i n vesti g ate recen t provi si on s sti tu te revi si on , on bel o w reg i sters of M embers cu rren tl y of val i d th e of I EC an d Qu al i ty in pro d u cfi o n I n tern ati on al syste ms an d - n ot test I SO/I EC Gu i d e I SO/I EC of Gu i d e acce pt ar J ce of 39: 988, i n specti o n 40: 983 , certi fi cati o n th at co n d u cts Gu i d e val u e: Val u e bei n g attai n ed seri es [l SO 23 certi f- 2- J to h avi n g in a a prescri bed h ypoth eti cal 693 01 fracti l e, Acti vi ti es testi n g , of a wh i ch [ I SO or on e servi ce req u i remen ts is d efi n ed in as or an d to measu ri n g , mo re ex- ch aracter- compari n g d etermi n e th ese form- 840 21 i n specti o n i cati on su ch g au g i n g prod u ct ( for bod y i n specti on bod y certi fi cati on ) : servi ces [ I SO/I EC Su i tabi l i ty on Gu i d e Bo d y beh al f of a th at certi f- 23 testi n g i nPu rp o se mai n tai n Stan d ard s Mo d el fo r pu rpose prod u cer of su i tabi l i ty h as th e testi n g capabi l i ty is to an d en su re resou rces th at to q u al i ty rei n forci n g steel s in accord an ce wi th th e i n stal l ati o n req u i remen ts acceptan ce Bo d y [ I SO/I EC Eq u i val en t prod u ce assu r an ce ru l es, Gu i d e ap- stan d ard s I S0 of performs Th e 9002: 987, an d [ I SO/I EC as servi ces to Stan d ard possi bi l i ty th e I S0 or stan d ard s appl y b o d y: speci fi ed d i cated syste m pro cesses parti cu l ar proced u re, i n specti o n : i sti cs th rou g h th e wi th Th e same ch aracteri sti c N o rm ati ve prod u cts, formi ty probabi l i ty ami n i n g , th e Stan d ard , Certi fi cati on sch e m e : same u n l i mi ted cl au se I n tern ati on al 4) ; 5) ; i n specti on ( see th i s appl y speci fi ed certi fi cati on 3 by th e prod u cti on i cati on - of d efi n i ti on s rel ated to 6935- for for pu rposes fol l owi n g an d A wi re s stru ctu res Sco pe Th i s an d 1 44: 9 ( E) G e n e ral re q u i re me n ts fo r bo d i e s re q u i re men ts fo r in th e prod u ct stan d ard s, th e bo d i e s G e n e ral speci fi ed th e Th e Org an i zati o n certi fi cati on me n ts of I SO/I EC bo d y sh al l Gu i d e co mpl y wi th th e req u i re- 40 I S0 01 44: 991 ( E) speci fi ed Proced u re Su i tabi l i ty testi n g si sts of th e fol l owi n g st ag es: i n specti on of - sampl i n g - veri fi cati on d i ti on s for prod u ct i on th ree at testi n g of speci men s the l on g - term qu al i ty l evel the sati sfactory al l th e resu l ts st ag es are sh al l be n ot ach i eved repeat ed in properti es separat el y for each on e Su i tabi l i ty steel g rad e prod u cti on ou t to met h od If processes, i ts ful l a steel g rad e su i tabi l i ty exten t for is testi n g each of t h ese of th e prod u ct i on prod u ced be i n spect i on - of the properti es tested org an i zati on of of ad eq u acy the sh al l th e of an d i n cl u d e eq u i pmen t for th e i n d epen d en ce for qu al i ty of th e assu ran ce prod u ct i on ; d epart men t f rom th e th e th e of the test respon si bl e th e of the the qu al i ty prod u cti on eq u i pmen t accord i n g to prod u cers of I S0 th e qu al i ty prod u cts for 002 is qu al i ty si d ered Th e i n spect i on acti vi ti es report from sh al l mel ti n g i n cl u d e to Sampl i n g an d testi n g of test the d e- to d evi ati on s sampl es pl an t ran g e is sh al l be cern ed of to en - an eval u at i on of of prod u ct speci men s t aken Th e prod u ct from test the sh al l val u es ( rel ated in d et ermi n ed to each si mpl i fi ed 2) val u es, be col l ated cast) , val u es, may be for a, it for u sed th e th e test resu l ts h ave certi fi cati on to th e prod u ce for a eval u at ed works a speci fi c prod u cer Du ri n g l evel be sh al l been bod y, thi s posi ti vel y symbol s peri od peri od an d are th e an g ran t ed l on g - term veri fi ed Veri fi cati on 3 Ext en t of of th e l on g - t erm qu al i ty l evel testi n g ord er to veri fy prod u cer sh al l ( i n tern al an d l on g - term an extern al peri od sh al l in for d ou bl e the extern al mon t h s th e exten t i n tern al sh al l for a an d of speci fi ed in be l evel , n u mber th e of tests su ffi ci entl y year) testi n g i n specti on i n specti on t h an qu al i ty i n creased i n specti on ) ( bet ween prod u cer th e perform Du ri n g carri ed Th e speci fi ed th i s ou t pe- mo re sh al l d i amet ers cover for of Eval u at i on prod u cti on the wh i ch en - certi f- appl i ed Exten t 2 At th e su l ts en d of eval u at ed sampl i n g an d of di fferen t d i ameters, u pper ran g e, process Th e co me eq u al l y d i amet ers, on e sh al l be on e th e l on g - term from at the l east test sh al l an d the an d for each 30 casts mech an i cal from mi d d l e for an d qu al i ty stati sti cal speci fi ed extern al co mpared l evel met h od s in 3 , i n specti on wi th d et ermi n ed sh al l each by correspon d al l sh al l rebe oth er appropri to the re- testi n g tested speci men s bet ween each from peri od an d separatel y speci fi ed Th ree the i n tern al q u i remen t s averag e tests syst em at e mi n e sh al l resu l ts the Approval Th e sh al l st an d ard req rri l cmen ts Gen eral i cati on of on 3 ti re Bas ed ( see i n ten si vel y Th e i ts test th e i n specti on ri od to refl ect sati sfactory d i spat ch of prod u ct val u es, of i n tern al l on g the wh et h er In th e t aken i n tern al syst em A the wi th j u d g ed 3 abi l i ty su re be approval testi n g ; - in ( i n d i vi du al report qu al i ty su i tabi l i ty of d evi ati on s) st an d ard On ce part men t ; - be g en eral l y t est ed compared resu l ts test by - test sati sfactory work; th e be speci fi ed an d st an d ard d i ti on s person n el sh ou l d t aken the represen tat i ve materi al to Eval u at i on sh al l compet en ce th e Properti es 4 processes d i ti on s the a by fol l owi n g : th e - prod u ct i on Care speci men s of by d i ameter from carri ed a th e testi n g bod y sel ected ran d o m each Th e I n specti on for at ch emi cal speci men testi n g an d sh al l each t aken Th e on e stag e, be vari ou s for on ( 3) Al l appl i es be i n specti on the st an d ard d et ermi n ed casts sh al l th at 3 If be presen t ed en su re ( 2) ; th e of l east sampl es from an d prod u ct from mat eri al ( ) : th e sh al l Th e - in composi t i on l ower on e each sel ected pi eces be t aken g eomet ri cal in th e 2 2, prod u ct if a ch aracteri sti c val u e is stan d ard ran g e f rom g rad e of th e an d 3 Approval d i amet er di stri bu ted to deter- property On ce by th e th e l est resu l ts certi fi cati on prod u cer h ave bod y, been a eval u at ed l i cen ce is posi ti vel y i ssu ed to the I S0 I n tern al i n specti o n by th e Pro ven pro d u cer tu rer If Pu rpo se val u es sh al l si mpl i fi ed repl aced Con ti n u o u s i n tern al man u factu rer q u al i ty th e is case of i mprove i n ten d ed remai n s to resu l ts of wi th wh i ch n ecessary prod u cti on en su re sati sfactory test d i ti on s, i n specti on th at ti me n ot measu res by th e l evel of an d th at, in co n fo rm can th e be to th e taken to pl n val u es by i n specti on of d u cti on For yi el d For el on g ati n n mean by th e al l parti al ( see ) ; d etermi n ati on prod u cer co n si sts q u an ti ti es of co n ti n u ou s pro- r- tress: be u sed an d ( see a, val u es, n a = of th e l on g - term q u al i ty man u fac- 4) , for ks ri h bed is an d MPa MPa casts parti al Ext e n t cast is of l east be for testi n g parti al l evel I,5 b) o/o d oes th e n ot appl y req u i red if ch arac- sh al l co mpl y oth er Al l test wi th th e req u i remen ts i n cl u d i n g req u i remen ts th e sh al l for carbon be met th e eq u i vfor each pi ece ( see test q u an ti ti es speci fi ed ch emi cal taken th ree in abo ve - test resu l ts su b- cl au se, are th e n ecessary u n sati sfactory prod u cer sh al l precau ti on s Casts accord i n g i mmed i atel y wh i ch to take n ot - q u an ti ti es ch aracteri sti cs except sh al l n to th e req u i remen ts sh al l be set asi d e testi n g u sed th e stan d ard , of lie al en t fo rm req u i remen t val u es composi ti on th e th e ru ptu re: val u e Wh ere Te sti n g after ch emi cal th i s at prod u ct of: 2) pi ece can stren g th : val u e i n d i vi d u al each each fol l owi n g ten si l e i n d i vi d u al Al l testi n g Th e th e For teri sti c i n tern al for bars: Th e al l - ks u sed prod u cti on Pro ce d u re - of be 1 44: 9 ( E) per in th e co mposi ti o n , 40 pi eces t for per al l cast For on e test d i ameters, an d 2 Dete rmi n ati o n of th e l o n g - term q u al i ty l evel prod u ct wi th n omi n al di - Th e l on g - term ratel y for q u al i ty each steel l evel g rad e sh al l be an d each eval u ated sepa- n omi n al d i am- eter ameter Th e be ch emi cal co mposi ti on d etermi n ed men ts for speci fi ed d etermi n ed in al l in th i s Eval u ati o n ( cast casts th e an al ysi s) Th e sh al l co n ten ts prod u ct of stan d ard al so th e sh al l el e- th e Th e test Exte n t ch aracteri sti c l owi n g an d req u i remen ts th e me an val u e val u es resu l ts for ( m) are resu l ts th e of i n d i vi d u al th e test th e val u es uni t are fol ( xi ) to of tests on prod u cti on be an d to speci fi ed , testi n g ti n u ou s col l ated th e after Wh e n of be an al yi s of 2 at l east l east l on g - term bo d y 200 every parti al th e h ave mo n th s, wi th eval u ated an d /or resu l ts q u al i ty q u an ti ti es acco rd an ce stati sti cal l y i n specti on at al l in in an d bo d y presen ted , to th e sh al l su bmi tted certi fi cati on been ord er of d etermi n e an d th e l evel be met: a) xi z 0, 9! $ Eval u ati o n wh e r e ch aracteri sti c val u e s are speci fi ed wh ere Th e is x th e req u i red accord i n g b) I TI Sk + to th e ch aracteri sti c prod u ct val u e averag e stan d ard m ks val u e ( ~ ) sh al l fk + th e fol l owi n g re- k x s, , wh ere wh ere is th e stan d ard accord i n g k sati sfy q u i remen t: is th e acceptabi l i ty i n d ex accord i n g Th e in th e stan d ard d evi ati on of th e d evi ati on of th e II resu l ts 2 to 2 2; is to test val u es tabl e , probabi l i ty for for of th e a 90 acceptabi l i ty fai l u re % (1 - rate n = of i n d ex % ( k) O, = are 0, 95) l i sted at a 0, 90) resu l ts I S0 1 44: 9 ( E) sh al l Tabl e - Acceptabi l i ty n u mber I n d ex( k) (n) of th e as test a fu n cti on of th e bo d y resu l ts n k n k 40 30 08 mi n ed 3, 09 40 01 pared 89 50 97 i n specti on , 75 60 I , 93 2, 65 70 , 90 2, 57 80 , 89 1 2, 50 90 , a7 2 , 45 00 , a6 Th e , 40 50 I 82 in 2, 36 200 I , 79 2 33 250 78 2, 30 300 77 2, 27 40 75 25 500 23 000 , 71 20 2, 21 00 I , 64 an extern al ( see resu l ts a of extern al th e d oes ti n u ou s d u cti on for tabl i sh ed - co mpl i an ce in th e ti n u ou s of of th e test of i n specti on d i ti on s wi th su pervi si on i n tern al as for warn i n g ach i eved in d eter- be co m- i n tern al wh i ch th e sh al l sh al l resu l ts form to sh al l si g n i fi can ce sh o w th e be of record ed sen t th at to th e th e pro- req u i remen ts, taken , th e be be ap- d epen d i n g d efi ci en ci es on n oted , th e prod u cer; of of i n specti on ( i n crease th e fre- testi n g ) : req u esti n g th at be th e d i ti on s of prod u cti on ch an g ed ; proced u re in wi th d rawal cl au se Del i very an approval d o cu m e n t Rei n forci n g in co mpl i an ce steel s wi th stan d ard d escri bed in wh i ch th e an d su bj ected 4, wh i ch to cl au se Stan d ard , d o cu men t h ave been req u i remen ts cl au se I n tern ati on al d el i very au th ori ze of es- ) ; proper speci fi ed m ay If i n ten si fi cati on as bo d y be sh al l exampl e: th i s certi fi cati on sh al l th i s pro- d i ti on s ( see th e of Org an i zati on Th e an d i n specti on report n ot an d prod u ct an d co mpared i s: th e su i tabi l i ty prod u cer bo d y i n specti on i n specti on be th e i n specti on , l evel year extern al measu res type - sh al l resu l ts bo d y sh ou l d of a by 2) su pervi si on propri ate - pu rpose th e case extern al q u al i ty twi ce wi th d u cti on Pu rpo se Th e each tests l on g - term q u en cy th ese l east certi fi cati on 74 in Eval u ati on - by I n specti on at ou t u n d ertaki n g of Th e - carri ed th e th e resu l ts be an d q u al i ty sh al l of be co n tai n s an d prod u ced a rel evan t assu ran ce cl au se su ppl i ed th e of wi th fol l owi n g a i n- i n specti on formati on : bo d y to carry vi si on Th e th e extern al i n specti on q u i remen ts ou t of i n specti on bo d y I SO/I EC Gu i d e sh al l an d su per- sati sfy th e re- a) n ame of th e b) symbo l c) bo d y d) n omi n al e) d esi g n ati on f) q u an ti ty g) d ate h) reci pi en t or prod u ci n g n u mber of wo rks; wo rks; Proced u re Extern al org an i zati on m axi mu m speci fi ed i n terval s Al l properti es be tested sh al l be tests l ow in an Th e test from extern al assu red be of same on test n omi n al sh al l be by carri ed carryi n g ou t extern al su pervi si on ; th e ou t at d i ameter; to i n tern al sh al l be taken Th e sto ck eval u ated i n tern al i n specti on an d sh al l Th e be to th e prod u ct stan d ard ; th e su ppl i ed ; resu l ts co mpared i n specti on i n specti on from test accord i n g sh al l wi th n u mber su fti ci en t to of man u factu re; of al - assessmen t extern al assessed proced u res tests su pervi si on mo n th s co n su mer’ s stati sti cal l y resu l ts al so speci men s or resu l ts an d in of su bj ected Th e prod u cer’ s th e i n specti on for an d pi eces an d i n tern al systemati c eval u ati on fro m d i ameter at an d i n specti on errors To l east from in th i s en d , bars th e sh al l sampl i n g , paral l el wi th same th e cast Wh ere d eal er or wo rks sh al l th e rei n forci n g ben d i n g fi rm rei n forci n g wo rks wh i ch req u i remen ts th e on bar to carry steel s wo rks, th e on l y ou t of su ppl i ed d eal er d el i very org i n ates q u al i ty th i s are th e or vi a d o cu men t fro m su pervi si on I n tern ati on al a ben d i n g th at prod u ci n g accord i n g Stan d ard I S0 An n e x 01 44: 991 ( E) ~ A ( i n formati ve) Bi bl i og raph y [I ] I S0 4: 77 Stati st i cs - Vo cabu l ary an d [4] I S0 40 : 86 Qu al i f y - Vo cabu l ary s ymbol s [5] [2] I S0 - A”, co n cret e - Steel Parf I: for Pl n the rei n forcemen t of I S0 6935- 2”, crefe ) To be - St eel Parf 2: for rei n f orcemen t of 89 : 87, stru ctu res G e n e r a/ - Li st of pri n ci pl es on eq u i val en t rel i abi l i ty terms bars [6] [ S] I S0 for the Ri bbed bars I S OAE C d efi n i t i on l ated Gu i d e 2: 986, co n cern i n g Gen eral t erms s t an d ard i z at i on an d an d fh ei r re- acti vi ti es pu bl i sh ed I S0 01 44: 991 ( E) U DC 669 4- 42 1 - 426: 69 71 4: 658 56 Descri pt orS Pri ce based crete, on pag es rei n forced cret e, steel s, rei n forced steel s, rel n forci n g bars, rou n d bars, wi re, certi fi cati on