I N TE RN ATI ON AL S TAN D ARD ISO 789 Fi rst ed i ti on 2004-02-1 S teel wi re ropes — Vocabu l ary, d es i g n ati on an d cl as s i fi cati o n Câbles en acier — Vocabulaire, désignation et classification Reference n u mber I SO 7893: 2004(E) © I SO 2004 I SO 7893: 2004(E) PDF d i sclai m er Th i s PDF sh al l n ot fi l e be e d i te d d o wn l o a d i n g a cce pts Ad o b e no is D e ta i l s of th i s co n ta i n u n l es s fi l e , l i a b i l i ty i n th i s th e s o ftwa re th e e ve n t th a t a u n l i ke l y I SO ri g h ts type fa ces acce p t wh i ch th e re i n In a re th e a cco rd a n ce em b e d d e d re s p o n s i b i l i ty wi th a re of Ad o b e ' s l i ce n s e d n ot to l i ce n s i n g an d i n fri n g i n g p o l i cy, i n s ta l l e d Ad o b e ' s on th i s th e l i ce n s i n g fi l e m ay com p u te r p o l i cy be p ri n te d p e rfo rm i n g Th e I SO or vi e we d th e C e n tra l bu t e d i ti n g In S e cre ta ri a t a re a S ys tem s p ro d u cts o p ti m i ze d res e rve d or u s ed I n co rp o te d to fo r p ri n ti n g p ro b l em U n l ess m e ch a n i ca l , m em b e r b o d y I SO typ e fa ces cre a te E ve ry re l a ti n g to it th i s ca re is PDF h as fo u n d , fi l e been pl e a s e ca n take n be fo u n d to e n s u re i n fo rm th e in th e th at C e n tra l G e n e l th e fi l e is I n fo re l ati ve s u i ta b l e S ecre ta ri a t a t th e for to u se a d d re s s th e by fi l e; I SO g i ve n th e P D F - cre a ti o n m em b e r b o d i es In b e l o w 2004 e l e ctro n i c I S O 's th e tra d em a rk o f Ad o b e we re Al l em b e d d e d p a rti e s p a m e te rs © in o th e rwi s e i n cl u d i n g th e co u n try s p eci fi e d , no p h o to co p yi n g o f th e p a rt an d of th i s p u b l i ca ti o n m i cro fi l m , wi th o u t m ay be re p ro d u ce d p e rm i s s i o n in wri ti n g or u ti l i ze d from in e i th e r an y I SO fo rm at th e or by an y a d d re s s m ean s, be l ow or re q u e s te r co p yri g h t o ffi ce Ca s e p o s ta l e 56 • CH -1 1 Te l + 41 22 749 01 1 Fax + 41 22 749 09 47 E -m a i l W eb G e n eva 20 co p yri g h t@ i s o o rg www i s o o rg P u bl i sh ed ii a m ay in S wi tze rl a n d © I SO 2004 – Al l ri g h ts res e rve d I SO 7893: 2004(E) Con ten ts Pag e Foreword i v I n trod u cti on v Scope Term s an d d efi n i ti on s Desi g n ati on 25 Cl assi fi cati on 33 An n ex A (i n form ati ve) El em en ts of a rope 38 An n ex B (i n form ati ve) Desi g n ati on system 39 Al ph abeti cal i n d ex 44 © I SO 2004 – Al l ri g h ts reserved iii I SO 7893: 2004(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part The main task of technical committees is to prepare International Standards Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights ISO shall not be held responsible for identifying any or all such patent rights ISO 7893 was prepared by Technical Committee ISO/TC 05, Steel wire ropes iv © ISO 2004 – All rights reserved I SO 7893: 2004(E) I n trod u cti on Th i s I n tern ati on al s tan d ard wa s te rm s a n d d efi n i ti on s as s oci a te d d e ve l op ed wi th s ys te m wh i ch wo u l d p rovi d e m an u factu rers , rope , and for a cl a s s i fi ca ti on in re s p on s e th e d es i g n , s ys tem to a worl d wi d e d em a n d m a n u fa ctu re a n d tes ti n g of s te e l for a s pe ci fi ca ti o n wi re rop e, co veri n g for a d es i g n a ti o n pu rch as e rs an d e n d u s e rs wi th a com m on m e th od of d e s cri b i n g a wh i ch wou l d en a b l e ro p e s of si m i l ar s tru cti o n an d m e ch a n i ca l p rop e rti e s to b e g rou p ed to g eth e r Th e d es i g n ati on and cl a s s i fi ca ti on s ys tem s e s ta b l i s h e d h e re ca n be u sed for d e s i g n a ti n g and cl a s s i fyi n g an y s te e l wi re ro pe s tru cti on © I S O 0 – Al l ri g h ts res erve d v I N TERN ATI ON AL STAN D ARD I SO 7893: 2004(E) Steel wi re ropes — Vocabu l ary, d esi g n ati on an d cl assi fi cati on Scope Th i s I n tern ati on al S tan d a rd d e fi n e s te rm s , an d s pe ci fi e s a d es i g n a ti on s ys te m an d a cl a s s i fi ca ti o n s ys te m , for s te e l wi re ro pe s Term s an d defi n i ti on s F or th e p u rp os e s of th i s d o cu m en t, th e fol l o wi n g te rm s a n d d e fi n i ti on s a p pl y Wi res Ou ter wi res ou ter wi re 〈 s p i ral rop e 〉 wi re p os i ti on e d i n th e ou te r l a ye r of a ro pe ou ter wi re 〈 s tran d e d rop e 〉 wi re p os i ti o n e d i n th e ou te r l a ye r of wi re s i n th e ou te r s tra n d s of a rop e I n n er wi res i n n er wi re 〈 s p i ral rop e 〉 wi re of th e i n te rm e d i a te l a ye rs of a rop e p os i ti on e d b e twee n th e ce n tre wi re s a n d ou te r l a ye r i n n er wi re 〈 s tran d e d rop e 〉 a n y wi re of a rop e oth e r th a n i ts ce n tre wi re s , fi l l e r wi re s , core wi re s or ou ter wi re s fi l l er wi re com p ara ti ve l y s m a l l wi re u s ed i n fi l l e r s tru cti on s to fi l l u p th e i n te rs ti ce s be twe e n l a ye rs of wi re s S e e F i g u re Cen tre wi res cen tre wi re 〈 s p i ral rop e 〉 wi re p os i ti on e d a t th e ce n tre of a rop e cen tre wi re 〈 s tran d e d rop e 〉 wi re p os i ti o n e d a t th e ce n tre of th e s tra n d s of a rop e © I S O 0 – Al l ri g h ts res erve d I SO 7893: 2004(E) core wi re wi re of th e core of a stran d ed rope l oad -beari n g wi re wi re i n a rope reg ard ed as tri bu ti n g toward s th e breaki n g force of th e rope l ayer (of wi res) assem bl y of wi res h avi n g on e pi tch ci rcl e d i am eter, th e fi rst l ayer bei n g th at l d i m m ed i atel y over th e stran d cen tre N OTE Th e excepti on is th e Warri ng ton l ayer, com pri si n g l arg e an d sm all wi res, wh ere th e sm al l er wi res are posi ti on ed on a pi tch ci rcl e d i am eter wh i ch is larg er th an th at of th e l arg er wi res N OTE Fi l ler wi res d o n ot sti tu te a separate l ayer sti tch i n g wi re sti tch i n g stran d si n g l e wi re or stran d u sed for th e sti tch i n g of fl at ropes servi n g wi re servi n g stran d si n g l e wi re or stran d u sed for m aki n g a cl ose-wou n d h el i cal servi n g to retai n th e el em en ts of a rope i n th ei r assem bl ed posi ti on wi re ten si l e stren g th g rad e R l evel of req u i rem en t of ten si l e stren g th of a wi re an d i ts correspon d i n g ran g e, d esi g n ated b y th e val u e accord i n g to th e l ower l i m i t of ten si l e stren g th an d u sed wh en speci fyi n g wi re an d wh en d eterm i n i n g th e cal cu l ated m i n i m u m breakin g force or cal cu l ated m i n i m u m ag g reg ate breaki n g force of a rope N OTE I t i s expressed i n n ewton s per sq u are mi l l i metre 1 m easu red wi re ten si l e stren g th Rm rati o between th e m axi m um force obtai n ed i n a ten si l e test an d th e n om i n al cross-secti on al area of th e test pi ece N OTE I t i s expressed i n n ewton s per sq u are mi l l i metre fi n i sh an d q u al i ty of coati n g d i ti on of th e su rface fi n i sh of th e wi re, e g bri g h t (u n coated ), zi n c coated , zi n c al l oy coated or oth er protecti ve coati n g an d th e cl ass of coati n g , su ch as Cl ass B zi n c coati n g , d efi n ed by th e m i n i m u m m ass of coati n g an d th e ad h eren ce of a coati n g to th e steel bel ow m ass of coati n g m ass of coati n g (obtai n ed by a prescri bed m eth od ) per u n i t of su rface area of th e u n coated wi re N OTE I t i s expressed i n g ram s per sq u are m etre © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) 2 Stran d s an d stran d types 2 stran d el em en t of rope n orm al l y si sti n g of an assem bl y of wi res of appropri ate sh ape an d d i m en si on s l d h el i cal l y i n th e sam e d i recti on i n on e or m ore l a yers arou n d a cen tre N OTE Stran d s contai n i ng th ree or fou r wi res i n th e fi rst l ayer, or certai n sh aped stran d s (e g ri bbon ), mi g h t n ot h ave a cen tre 2 rou n d stran d stran d wi th a perpen d i cu l ar cross-secti on wh i ch i s approxi m atel y th e sh ape of a ci rcl e See F i g u re a) Stran d wi th on e cen tre wi re b) Stran d wi th (1 -6) bu i l t-u p cen tre Fi g u re — Rou n d stran d wi th d i fferen t cen tres 2 tri an g u l ar stran d V stran d wi th a perpen d i cu l ar cross-secti on wh i ch i s approxi m atel y th e sh ape of a tri an g l e N OTE Tri an g u l ar stran d s can have bu i l t-u p cen tres See F i g u re Fi g u re — Tri an g u l ar stran d wi th tri an g u l ar (V) cen tre wi re © I SO 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) 2 oval stran d Q s tran d h a vi n g a p e rpe n d i cu l a r cros s -s e cti on wh i ch i s a p p roxi m atel y th e s h a p e of a n o va l S e e F i g u re Fi g u re — Oval stran d 2 fl at ri bbon stran d P s tran d wi th ou t a cen tre wi re , h a vi n g a p erp e n d i cu l a r cros s -s ecti on wh i ch is ap p roxi m ate l y th e s h ap e of a re ctan g l e S e e F i g u re Fi g u re — Fl at ri bbon stran d 2 si n g l e l ay stran d s tran d wh i ch ta i n s on l y on e l a yer of wi re s S e e F i g u re Fi g u re — Si n g l e l ay stran d © I S O 0 – Al l ri g h ts res erved I SO 7893: 2004(E) 4 Core stru cti on Th e core stru cti on sh al l be d esi g n ated i n accord an ce wi th Tabl e 4 Rope g rad e Th e rope g rad e, wh en g i ven , sh al l i d en ti fy th e l evel of breaki n g force of th e rope, e g 770, 370/1 770 N OTE N ot al l ropes are id en ti fi ed by a rope g rad e Su rface fi n i sh of wi re Th e su rface fi n i sh (of th e ou ter wi res) sh al l be d esi g n ated u si n g th e fol l owi n g l etter sym bol s: Bri g h t or u n coated : U Zi n c coated cl ass B: B Zi n c coated cl ass A: A Zi n c al l oy coated cl ass B: B(Zn /Al ) Zi n c al l oy coated cl ass A: A(Zn /Al ) With oth er fi n i sh es, i t wi l l be n ecessary to en su re th at th e m ean i n g of an y sel ected l etter s ym bol u sed i s i d en ti fi ed 7 Type of l ay an d d i recti on Spi ral rope Th e d i recti on of l a y sh al l be d esi g n ated u s i n g th e fol l owi n g l etter sym bol s: Ri g h t l ay: Z Left l a y: S Stran d ed rope Th e type an d d i recti on of l ay sh al l be d esi g n ated u si n g th e fol l owi n g l etter s ym bol s: Ord i n ary l ay, ri g h t: sZ Ord i n ary l ay, l eft: zS Lan g l a y, ri g h t: zZ Lan g l a y, l eft: sS Al tern ate l ay, ri g h t: aZ Al tern ate l ay, l eft: aS N OTE Th e fi rst l etter of th e ord i n ary an d Lan g types d enotes th e d i recti on of th e wi res i n th e stran d s an d th e secon d l etter d en otes the d i recti on of th e stran d s i n th e rope Th e second letter of th e al tern ate types d enotes th e d i recti on of th e strand s i n the rope 32 © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) Cl assi fi cati on Th e system for cl assi fyi n g steel wi re ropes sh al l take i n to accou n t th e n u m ber of stran d s, th e n u m ber of ou ter stran d s, th e n u m ber of l a yers of stran d s i n th e rope an d th e n u m ber of wi res, th e n u m ber of ou ter wi res, th e n u m ber of l ayers of wi res an d stran d l a y type of th e ou ter stran d Th e d esi g n ati on for th e cl ass sh al l be i n accord an ce wi th Cl au se N OTE Tabl es to g i ve exam pl es of th e m ore comm on rope classes for each of th e basi c rope types Tabl e — Si n g l e l ayer ropes Rope Cl ass Ou ter stran d (excl u d i n g N u m ber of N u m ber of N u m ber of N u m ber of N u m ber of N u m ber of Stran d l ay core) stran d s ou ter l ayers of wi res ou ter wi res l ayers of type stran d s stran d s wi res × 3 5-9 × 19 3 × 36 3 × 9M 3 × 37M 3 × 35N 4-8 Si n g l e 5-26 7-1 2-3 Paral lel 27-49 2-1 Paral lel 1 2-1 9-1 2 Mu l ti op cross 27-37 6-1 Mu l ti op cross 28-48 2-1 Mu l ti op compou n d × 4 5-9 × 19 4 × 36 4 × 9M 4 × 37M 4 × 35N 4-8 Si n g l e 5-26 7-1 2-3 Paral lel 29-57 2-1 3-4 Paral lel 1 2-1 9-1 2 Mu l ti op cross 27-37 6-1 Mu l ti op cross 28-48 2-1 Mu l ti op compou n d × 5 5 Si n g le × 5 Si n g le × 6 6 Si n g le × 6 5-9 4-8 Si n g l e × 12 6 12 12 Si n g le × 19 6 1 5-26 7-1 2-3 Paral lel × 36 6 29-57 2-1 3-4 Paral lel × 61 6 61 -85 8-24 3-4 Paral lel © I SO 2004 – Al l ri g h ts reserved 33 I SO 7893: 2004(E) Tabl e ( continued) Rope Cl ass Ou ter stran d (excl u d i n g N u m ber of N u m ber of N u m ber of N u m ber of N u m ber of N u m ber of Stran d l ay core) stran d s ou ter l ayers of wi res ou ter wi res l ayers of type stran d s stran d s × 9M 6 × 24M 6 × 37M 6 × 61 M 6 × 35N wi res 2-1 9-1 2 Mu l ti op cross 24 2-1 Mu l ti op cross 27-37 6-1 Mu l ti op cross 45-61 20-24 Mu l ti op cross 28-48 2-1 Mu l ti op compou n d × 61 N 6 47-61 20-24 3-4 Mu l ti op compou n d × 19 7 1 5-26 7-1 2-3 Paral l el × 36 7 29-57 2-1 3-4 Paral l el × 8 5-9 4-8 × 19 8 1 5-26 7-1 2-3 × 36 8 29-57 2-1 3-4 Paral l el × 61 8 61 -85 8-24 3-4 Paral l el × 35N 8 28-48 2-1 Mu l ti op × 61 N 8 47-81 20-24 3-4 Mu l ti op Si n g le Paral l el compou n d compou n d × 91 N 8 85-1 09 24-36 4-6 Mu l ti op compou n d Com bi n ed rope × 4 6 Si n g le × 6 6 Si n g le × 12 6 12 12 Si n g le × 24 6 24 2-1 Mu l ti op cross Tri an g u l ar stran d rope × V8 6 8-9 7-8 Si n g l e × V25 6 1 5-31 9-1 Mu l ti op cross When th e cen tre wi re of a stran d is repl aced by a cen tre stran d m an u factu red i n a separate stran d i n g operati on , e g -6 (i n a rou n d stran d ) or Rope stru cti on × × + 3F (i n a tri an g u l ar stran d ), the cen tre strand may be cou n ted as on e wi re 29F m ay be classi fied as ei th er × or × 36 Rope cl asses havi n g th ree or fou r stran d s may al so be d esi gn ed an d stru cted to have resi stance to rotati on 34 © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) Tabl e — Rotati on -resi stan t ropes Rope N u m ber of Cl ass stran d s (excl cen tre) Ou ter stran d N u m ber of N u m ber of ou ter l ayers of stran d s stran d s N u m ber of N u m ber of N u m ber of wi res ou ter wi res 4-8 l ayers of wi res Stran d l ay type Rou n d stran d : operati on cl osi n g 18 × 7-1 0-1 2 5-9 18 × 19 7-1 0-1 2 5-26 7-1 2-3 Paral l el 18 × 36 7-1 0-1 2 29-57 2-1 3-4 Paral lel Si n g le operati on cl osi n g 23 × 21 -27 5-1 5-9 4-8 23 × 19 21 -27 5-1 5-26 7-1 2-3 Si n g le Paral l el operati on cl osi n g 24 × 9-28 1 -1 5-9 4-8 24 × 19 9-28 1 -1 5-26 7-1 2-3 Si n g le Paral l el operati on cl osi n g 34(M) × 34-36 7-1 5-9 4-8 34(M) × 19 34-36 7-1 5-26 7-1 2-3 Paral l el 34(M) × 36 34-36 7-1 29-57 2-1 3-4 Paral lel Si n g le operati on cl osi n g 35(W) × 27-40 5-1 5-9 4-8 35(W) × 19 27-40 5-1 5-26 7-1 2-3 Paral l el 35(W) × 36 Paral l el Si n g le 27-40 5-1 29-57 2-1 3-4 × 7: IWRC 14 - 16 5-9 4-8 × 9: IWRC 14 - 16 5-26 7-1 2 - Paral lel × 36: IWRC -1 29-57 27-1 - Parall el × 7: IWRC 18 5-9 4-8 × 9: IWRC 18 5-26 7-1 2 - Parallel × 36: IWRC 18 29-57 27-1 - Parallel 0-1 6-9 8-1 8-1 Si n g le 15 12 6 Si n g le Sing le Sing le Sh aped stran d : operati on cl osi n g 10 × Q1 2xP6: Q3 x24FC operati on cl osi n g 9(M) × Q1 19 0-1 0-1 Si n g le 9(M) × Q26 19 24-28 4-1 Mu l ti op cross Rope cl asses havi n g or stran d s m ay al so be d esi g n ed and stru cted to h ave resistance to rotati on © I SO 2004 – Al l ri g h ts reserved 35 I SO 7893: 2004(E) Tabl e — Paral l el -cl osed ropes Cl ass N o of N o of ou ter N o of N o of wi res N o of ou ter N o of l ayer Stran d l ay stran d s stran d s l ayers of i n ou ter wi res of wi res type stran d s stran d s (excl cen tre) × 9-PWRC 12 5-26 7-1 2-3 Paral l el × 36-PWRC 12 29-57 2-1 3-4 Paral lel × 7-PWRC 16 5-9 4-8 × 9-PWRC 16 5-26 7-1 2-3 Paral l el × 36-PWRC 16 29-57 2-1 3-4 Paral lel × 7-PWRC 18 5-9 4-8 × 9-PWRC 18 5-26 7-1 2-3 Paral l el × 36-PWRC 18 29-57 2-1 3-4 Paral lel Si n g le Si n g le Tabl e — Cabl e-l d ropes Rope U n i t rope Cl ass 6 N u m ber of ou ter l ayers of stran d s stran d s N u m ber of N u m ber of N u m ber of ou ter l ayers of wi res wi res N u m ber of N u m ber of u n i t ropes stran d s 6 5-9 4-8 19 6 1 5-26 7-1 2-3 Paral l el 36 6 27-57 2-1 3-4 Paral lel 61 6 61 -73 20-24 3-4 Paral lel 9M 6 1 2-1 9-1 2 Mu l ti op Mu l ti op (excl u d i n g core) × × × × × Ou ter stran d of u n i t rope N u m ber of wi res Stran d l ay type × × × × × × × 37M 6 27-37 6-1 × × 61 M 6 45-61 20-24 × × 35N 6 28-48 2-1 Mu l ti op × × 61 N 6 47-81 20-24 3-4 Mu l ti op × × 91 N 6 85-1 09 24-36 4-6 19 8 1 5-26 7-1 2-3 Paral l el 36 8 27-57 2-1 3-4 Paral lel 61 8 61 -73 20-24 3-4 Paral lel 6 6 6 6 Si n g le cross cross Mu l ti op cross comp comp Mu l ti op comp × × × × × × × × 35N 8 28-48 2-1 Mu l ti op × × 61 N 8 47-81 20-24 3-4 Mu l ti op × × 91 N 8 85-1 09 24-36 4-6 6 8 comp comp Mu l ti op comp Spri n g l ay: 6 × × 3 × × 19 9M 6 a a 1 5-26 7-1 2-3 a a 1 2-1 9-1 2 Paral l el Mu l ti op cross a 36 See © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) Tabl e — Fl at ropes Rope Cl ass U n i t rope N u m ber of N u m ber of u n i t ropes stran d s Stran d of u n i t rope N u m ber of l ayers of N u m ber of N u m ber of N u m ber of ou ter l ayers of wi res wi res wi res stran d s Stran d l ay type P6 × × 5-9 4-8 Si n g l e P6 × × 2M 12 Mu l ti op cross P8 × × 5-9 4-8 Si n g l e P8 × × 2M 12 Mu l ti op P8 × × 4M 14 10 cross Mu l ti op cross P8 × × 9W 12 Paral l el P8 × × 9M 12 Mu l ti op cross Tabl e — Spi ral stran d Cl ass N u m ber of wi res N u m ber of outer N u m ber of layers wi res of wi res × 19 7-37 1 -1 2-3 × 37 34-59 7-22 3-4 × 61 57-85 23-28 4-5 91 86-1 29-34 5-6 27 > 114 > 34 >3 1 × × Tabl e 1 — Stran d N u m ber of layers wi res of wi res 5-9 4-8 Si n g le 19 5-26 7-1 2-3 Paral l el 9M N u m ber of wi res × 1 × × 1 N u m ber of outer Cl ass 2-1 9-1 2 Mu l ti op cross 36 27-49 2-1 Paral l el 37M 27-37 6-1 Mu l ti op cross × × Stran d l ay type Tabl e — Locked coi l Cl ass © I SO 2004 – Al l ri g h ts reserved N u m ber of layers of wi res Si n g le l ayer of hal f-locked wi res or more Dou bl e l ayer of h al f-l ocked wi res or more Mu l ti pl e l ayers of h al f-l ocked wi res or more Si n g le l ayer of ful l -locked wi res or more Dou bl e l ayer of ful l -locked wi res or more Tri pl e l ayer of ful l -l ocked wi res or more Mu l ti pl e l ayer of fu l l -l ocked wi res or more 37 I SO 7893: 2004(E) An n ex A (i n form ati ve) El em en ts of a rope See F i g u res A an d A Ke y wi re rope wi re stran d core Fi g u re A — Stran d ed rope Ke y rou n d tri an gu l ar (V) fu l l -l ocked (Z) rectan g u l ar (R) h al f-locked (H ) oval (Q) trapezoid al (T) Fi g u re A — Exam pl es of wi re sh apes 38 © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) An n ex B (i n form ati ve) Desi gn ati on system B Stran d stru cti on for stran d ed ropes See F i g u re B Fi g u re B — Stran d stru cti on for stran d ed ropes — D esi g n ati on exam pl e B Rope stru cti on B Spi ral stran d See F i g u re B Fi g u re B — Spi ral stran d — Desi g n ati on exam pl e © I SO 2004 – Al l ri g h ts reserved 39 I SO 7893: 2004(E) B 2 Stran d ed rope B 2 Si n g l e l ayer stran d ed rope S ee F i g u re B Fi g u re B — Si n g l e l ayer stran d ed rope — Desi g n ati on exam pl e 40 © I S O 0 – Al l ri g h ts res erved I SO 7893: 2004(E) B 2 Rotati on -resi stan t rope S e e F i g u re B Fi g u re B — Rotati on resi stan t rope — Desi g n ati on exampl e © I S O 0 – Al l ri g h ts res erve d 41 I SO 7893: 2004(E) B 2 Paral l el -cl osed rope S e e F i g u re B Fi g u re B — Paral l el -cl osed rope — D esi g n ati on exam pl e B Cabl e-l d rope S e e F i g u re B Fi g u re B — C abl e-l d rope — Desi g n ati on exam pl e B Brai d ed rope S e e F i g u re B Fi g u re B — B rai d ed rope — D esi g n ati on exam pl e 42 © I S O 0 – Al l ri g h ts res erved I SO 7893: 2004(E) B Fl at rope S e e F i g u re B Fi g u re B — Fl at rope — Desi g n ati on exam pl e © I S O 0 – Al l ri g h ts res erve d 43 I S O 89 : 0 4(E ) Al ph abeti cal i n d ex m eas u re d to tal s pi n n i n g l os s A E factor al te rn ate l a y el ectro-m ech an i cal rop e eq u al l ay ap pro xi m ate ou ter wi re 2 24 m e as u red val u e m e as u red wi re ten s i l e 27 d i am e ter 21 m eas u re d to tal s pi n n i n g l os s 1 s tren g th m i n i m u m ag g re g ate b reaki n g F force B fi bre co re brai d ed rope C factor 2 20 m u l ti -stran d rope 2 (su persed ed ) N 1 fu l l y p reform e d rope 1 force cal cu l ate d m etal l i c cros s -secti o n al n om i n al m etal l i c cro s s -s e cti o n al H are a are a cal cu l ate d m i n i m u m ag g reg ate 1 breaki n g fo rce h al f-l o cked co i l rope I n on -rotati ng rope 2 1 com p acte d (s wag e d ) ro pe 2 com pacted s tran d com p acte d s tran d ro pe i m preg n ati n g ag en t I n s ert (su persed ed ) O 2 L o u ter wi re core wi re l an g l a y cro s s -l a y 2 l a y d i re cti on of rop e cu s h i o n ed core rope 6 8 P D m an u factu re r' s d e s i g n val u e 7 d i m en si on of rou n d wi re d i m e n s i o n o f s h aped wi re , 2 d i m en si on s o f s h ape d fo rce R 1 m e as u re d bre aki n g fo rce 1 area l os s factor 22 1 m e as u re d ro pe l e n g th 1 2 2 rope s tru cti on rope g rad e m e as u re d re d u ce d ag g re g ate m as s re d u ce d val u e rope cl as s 25 b re aki n g force re d u ce d m i n i m u m ag g re g ate breaki n g fo rce m e as u re d parti al s pi n n i n g l os s 7 5, p rod u cti o n l e n g th m e as u re d ag g re g ate b re aki n g m e as u re d ro pe l e n g th 44 m e as u re d p arti al s pi n n i n g d i m e n s i on s o f covered ro u n d s tran d m as s o f co ati n g m e as u re d m e tal l i c cross -s ecti o n al d i m e n s i on s o f covered fl at d i m e n si on s of fl at rope p re s ervati on ag e n t d i m e n si on of rou n d s tran d rope p aral l el -cl o se d rop e d i m e n si on of ou ter ro u n d rope 2 p aral l el l a y s tran d M d i m e n si on of rou n d rope 26 2 o val s tran d l oad -beari n g wi re wi re , o u ter wi re d i am eter facto r l a y d i re cti on of s tran d l a yer (of wi res ) o rd i n ary l a y cu s h i on e d rope , 2 i n n er wi re tra-l a y n om i n al val u e , com b i n e d paral l e l l a y com po u n d l a y n om i n al rop e l e n g th m as s cal cu l ate d val u e ce n tre wi re 2 are a facto r n om i n al rop e l en g th 1 force n om i n al m etal l i c cro s s -s ecti o n al cal cu l ate d m i n i m u m breaki n g core fl at rope fu l l -l ocke d coi l rop e cal cu l ate d m e as u red b reaki n g 2 s tran d fl at ri bb on s tran d cal cu l ate d m e as u red ag g re g ate m u l ti p l e op erati o n l a y fi n i s h an d q u al i ty of coati n g m i n i m u m val u e fi l l er wi re breaki n g fo rce 1 m i n i m u m b re aki n g fo rce 1 fi l l factor fi l l e r cab l e -l d ro pe 1 m i n i m u m breaki n g force 2 2 1 rope l a y l en g th 1 rop e l e n g th m as s factor rope l u bri can t rotati on -res i s tan t rope rou n d s tran d 6 2 © I S O 2004 – Al l ri g h ts reserved I SO 7893: 2004(E) S Seal e servi n g stran d servi n g wi re S h a p e d wi re si n g l e l ay stran d 2 si n g l e-layer rope sol i d pol ym er core sol i d pol ym er covered an d fil l ed rope 3 sol i d pol ym er-covered rope sol i d pol ym er-fi l l ed rope spi n n i n g l oss factor spi ral rope spi ral stran d rope spri n g l ay steel core 3 sti tch i n g stran d sti tch i n g wi re stran d 2 23 2 2 stran d clearance stran d l ay l en g th stran d ed rope T torq u e 1 tri an g u l ar stran d tu rn 1 W Warri n g ton 2 wi re ten si l e stren g th g rade © I S O 0 – Al l ri g h ts res erve d 45 I SO 7893: 2004(E) I CS 01 040 21 ; 77 40 65 Price based on 45 pages © ISO 2004 – All rights reserved