Table Of Content

BSI BS*KL290 83 lb24hbî 0339442.5 BS 1290: 1983 UDC 621.86.065 : 677.72 O British Standards Institution. No part of this publication may be photocopied or otherwise reproducedw ithout the prior permission in writing of BSI. British Standard Specification for Wire rope slings-a nd sling legs for general lifting purposes Spécification pour les élingues à câble métallique et branches d'élingues pour levage général Spezifikation für Drahtseilschlingen und Gehänge für allgemeine Hubzwecke British Standards Institution CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BSI BSXL290 83 Lb24bb9 0139443 7 W BS 1290 : 1983 Contents Page Page Foreword Inside front cover Section three. Specific requirements for slings Cooperating organizations Back cover constructed from galvanized marine ropes in accordance with BS 365 Specification 14. Rope construction 7 15. Safe working load 7 Section one. General requirements 1, Scope 1 Appendices 2. References 1 A. Forms of sling legs 9 3. Definitions 1 B. Basis for calculating the safe working load of 4. Forms of sling assembly 1 wire rope slings 9 5. Formation of sling legs 1 C. Minimum length of soft eyes 10 6. Terminations 4 D. Design of master links 11 7. Terminal fittings 4 8. Information to be given with enquiry or order 4 Tables 9. Testing 4 1. SWLs for slings constructed from ropes with 10. Identification and marking of the completed fibre cores 6 sling 4 2. SWLs for slings constructed from ropes with 11, Certificate of test and examination 5 steel cores 7 3. SWLs for slings constructed from ropes in accordance with BS 365 8 Section two. Specific requirements for slings Figures constructed from general engineering ropes 1. Single-leg slings, sling legs and terminal fittings 2 12. Rope construction 5 2. M ult i-leg sI in gs : typical assem bl ¡es 3 13. Safe working load 5 3. Crane hook 4 4. Typical marking for SWL 5 5. Leg angles of two-, three- and four-leg slings 8 Foreword This revised British Standard has been prepared under the This standard covers only those multi-leg slings that have direction of the Mechanical Engineering Standards legs of equal nominal length, construction and diameter. Committee and supersedes the 1958 edition of BS 1290, Slings with legs of unequal length may be constructed which is withdrawn. generally in accordance with the requirements of this standard, but it is emphasized that their rating requires This revision introduces a certain degree of rationalization, special consideration by a competent person. including the restriction of wire ropes to a limited range of sizes, constructions and tensile grades. The appendices Size for size, the SWLs of slings constructed from general giving details of sling terminations have been replaced by engineering ropes (section two) are approximately 50 % suitable cross-references. In accordance with modern greater than those of slings constructed from galvanized international practice, links have been adopted in this marine ropes (section three). standard in preference to rings. Dimensions of master and Appendix B gives information on the method of intermediate links may be obtained from BS 2902 and calculating SWLs. This method is known as the uniform BS 3458. Advice on the design of these links in other load method and has been adopted internationally as an grades of material is given in appendix D, which is identical alternative to the trigonometric method. It is therefore the with the annex of IS0 4778-1981 published by the preferred method for general purpose multi-leg slings as International Organization for Standardization (ISO). well as for single-leg slings. This revision covers slings with both hand-spliceda nd A code of practice for the safe use of wire rope slings for ferrule-secured eye terminations. Depending on the type of general lifting purposes (BS 6210) is published concurrently sling required, the ends of the sling legs may be formed with this standard. with a thimble eye, a soft eye or a soft eye with stirrup or Compliance with a British Standard does not of itself half thimble. confer immunity from legal obligations. CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BS 1290 : 1983 D British Standard Specification for Wire rope slings and sling legs for general lifting purposes Section one. General requirements Nlmm2) and a coefficient appropriate to the construction of the rope. 1. Scope 3.3 Joad. Encompasses the concept of either mass or This British Standard specifies the dimensions, force and is expressed in the appropriate units. constructions, safe working loads, testing and marking of NOTE. In SWL, for example, the term 'load' denotes a mass wire rope slings for general lifting purposes. quantity, whereas in MBL it denotes a force quantity. Sections one and two deal with slings having one, two, three or four legs of general engineering wire rope of 4. Forms of sling assembly tensile grade 1770 N/mm2 complying with the requirements Sling legs and terminal fittings shall be of one of the forms of BS 302 or ES 3530, with fibre or independent steel wire shown in figure 1. main core. The legs are constructed in ordinary lay wire . rope, in the sizes and constructions specified in clause 12 NOTE I. Some typical sling assemblies are illustrated in figure 2 for two-, three- anc! hrr-leg slings. The lower terminal fittings may be and in one of the following forms: any of those sltuwn in figure 1 except soft eyes. (a) síngle-part terminated by hand-splicedo r ferruie- The nominal hgth of sling assemblies shall be measured secured efes; between the bearing points. (b) double-part hand-splicedo r ferrule-secured endless; A thimble shall be used when the sling leg is terminated (c) double-part grommet. with a permanently attached link, hook or shackle. Sections one and three deal with slings having one or two Any welding and/or heat treatment of links shall be single-part legs of 6 x 24 constructiop galvanized wire rope completed before the wire rope leg or legs are attached. of tensile grade 1420 N/mm2 complying with the The legs of two- or three-leg slings shall be joined at their requirements of BS 365. The legs are terminated by upper ends by a suitable link (see 7.1). hand-spliced or ferrule-secuy_ede yes. Each pair of legs of a four-leg sling shall be joined by a This standard deals with only those multi-leg slings that suitable intermediate link and the two intermediate links have legs of equal nominal length, construction and shall be joined by a suitable master link. diameter and that are designed for use with the uniform The nominal length of slings and sling legs shall be the load method of rating. Such slings are not intended to length between the bearing points of their terminal O withstand greater loads at smaller included angles than fittings, whether soft eye, soft eye with stirrup or half those specified (see 7.11. thimble, thimble, shackle, hook or link (see figures 1 This standard does not cover slings made from multistrand and 2). This length shall be measured under no load. In the or triangular strand ropes. case of two-, three- and four-leg slings, the discrepancy in length between any of the legs, in millimetres, shall not 2. References exceed that given by the equation: The titles of the publications referred to in this standard Maximum discrepancy = 9 + (-" '3 are listed on the inside back cover. 9L) where 3. Definitions d is the nominal rope diameter, in millimetres, and For the purposes of this British Standard the following L is the nominal length of sling leg, in metres. definitions apply. NOTE 2. This formula is not applicable to spliced endless slings 3.1 safe working load (SWL). The maximum mass, as and grommet sling legs. certified by a competent person, that an item of lifting gear may raise, lower or suspend under particular servic 5. Formation of sling legs condit i ons. Sling legs shall be formed by one of the methods given in 3.2 minimum breaking load (MBL). The load below which appendix A. Depending on the type of sling required, the a rope will not fracture when tested to destruction in the ends of sling legs shall be formed with a thimble eye prescribed manner (see IS0 3108-1974). The MBL is (which may be attached to other terminal fittings), a soft calculated from the square of the nominal rope diameter eye or a soft eye with stirrup or half thimble. (in mm21 , the nominal tensile strength of all the wires (in I CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess = = BSI BS*1290 83 1b24bb9 0139445 O BS 1290 : 1983 ô al Cz YC ï 2 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess ~ BS 1290 : 1983 Nominal length R - al I-' 1.E-) 5 5 t 5C O 5._ 2 Nominal length I u Nominal length Y b ô .m- > -C -+I-' u, al u, 5 cONm) 5YrOm--' 3 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BSI BS*1290 83 BS 1290 : 1983 6. Terminations (c) the type of eye at each end (see figure 1); 6.1 Ferrule-secured eye terminations. Ferrule-secured eye (d) the terminal fittings, if any, at each end (see 7.2 and terminations shall comply with the requirements of 7.3 and figures 1 and 2); BS 5281. (e) the dimensional details of the crane hook on which 6.2 Thimbles, Thimbles shall comply with the the master link is to be fitted (see 7.1 and figure 3); requirements of ES 464. They shall be of the nominal size (f) the number of legs and angle of use, ¡.e. O" to 90" or appropriate to the rope used, except that for double-part 90" to 120" (see figure 5 and tables 1 to 3); endless slings it is permissible for the thimbles to be two, (9) the nominal length; or where necessary three, sizes larger in order to provide effective strength against the increased loading. Reeving (h) the SWL, and the factor of safety of the wire rope if thimbles shall be one cite larger than the nominal size. greater than 5 (see clause 10 and tables 1 to 3); (i)w hether SWL marking is required (see 10.5); NOTE. When thimbles of larger than nominal size are used, the portion of rope that will seat in the thimble groove may be served (i) whether proof load certificates are required (see with spun yarn or other suitable material to ensure a close fit. clause 11 (e)). 6.3 Soft eyes. The minimum length of a soft eye under no load shall be as given in appendix C. NOTE. A stirrup or half thimble may be fitted to protect the bearing surface of the soft eye. 7. Terminal fittings 7.1 Links. The SWL rating of master and intermediate links shall be as given in figure 2. Master links shall be large enough to accommodate a crane hook in accordance with BS 2903 rated two steps greater than the maximum rating marked on the sling. NOTE 1. Master and intermediate links are designed to withstand the rated SWL marked on the sling only within the range of included angle specified, e.g. O" to 90". They are not designed to withstand heavier loads at included angles less than 90". NOTE 2. Suitable designs for links are given in BS 2902 and BS 3458, and further advice on design is given in appendix D of A is the throat opening this standard. B is the width 7.2 Hooks. If hooks are used, they shall comply with the C is the depth requirements of BS 2903. Figure 3. Crane hook NOTE, If hooks of higher grade material are fitted, their dimensions may be smaller than those given in BS 2903 for the equivalent rat in g. 9. Testing In all cases the SWL of the hook shall be not less than that Before assembly all links and hooks shall have been proof of the leg to which it is attached. loaded and a sample of the rope tested in accordance with If required by the purchaser, point hooks shall be fitted the relevant standard. Where ferrule-secured eye with a safety device to prevent displacement of the load. terminations are used, each completed sling leg shall be proof tested to twice the SWL of the equivalent single-leg 7.3 Shackles. If shackles are permanently attached to the sling (see table 1 column B or C, table 2 column L, or lower end of the sling, they shall comply with the table 3 column S). requirements of ES 3032 or BS 3551. NOTE. If shackles of higher grade material are fitted, their dimensions may be smaller than those given in BS 3032 or BS 3551 IO. Identification and marking of the completed for the equivalent rating. sling In all cases the SWL of the shackle shall be not less than 10.1 All marking shall be durable and legible and shall be that of the leg to which it is attached. on 7.4 Quality grade and treatment of terminal fittings. (a) a durable tag or label firmly attached to the sling, Master and intermediate links shall be of the same quality grade and shall be subjected to the same heat treatment. (b) a durable ferrule securely attached to the sling, or (c) the master link. 8. Information to be given with enquiry or order 10.2 For single-leg slings the marking shall comprise: The following information shall be supplied by the (a) the numbers and/or letters identifying the sling with purchaser when submitting an enquiry or order: the certificate required by clause 11, and (a) the group of rope from which the sling is to be (b) the SWL (see appendix B). manufactured (see clauses 12 and 14); 10.3 For two-, three- and four-leg slings, the marking shall NOTE. If the group of rope is not specified, then slings made comprise: from general engineering rope to BS 302 or BS 3530 should be supplied. (a) the numbers and/or letters identifying the sling with (b) the form of the sling ieg(s1 (see figure 1); the certificate required by clause 11, and 4 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BSI BS*1290 ô3 W lb24bbï 0137448 b BS i290 : 1983 (b) the SWL or SWLs and the leg angle or angles for to the proof loading required by clause 9; which they apply (see figure 4). NOTE. The appropriate certificates, published by the NOTE. If a multi-leg cling is designed for use at more than one Department of Employment under the Factories Act 1961, are combination of SWL and leg angle, each combination may be Form 87 for wire rope and Form 97 for terminal fittings and marked on a separate tag or label. proof testing. (f) the quality grade of the terminal fittings; I I (9) details of the tensile test to destruction carried out on a sample of rope from which the sling was made. 6.3 t rnax 0-90 O Section two. Specific requirements for slings constructed from general engineering ropes Figure 4. Typical marking for SWL 12. Rope construction 10.4 The marking on the ferrule of a ferrule-secured eye Slings shall be constructed from one of the following ropes, termination or master link shall not be such as to impair its or from other rope complying with the requirements of strength, BS 302 or BS 3530 and having an equal or greater MBL for an equivalent construction. 10.5 The manufacturer shall be responsible for the marking specified in 10.2(a) and 10.3(a). The user shall be British Standard Construction Diameter responsible for ensuring that all other marking requirements mm are complied with (see clause 8 (i)). BS 3530 : 1968 NOTE. The user may request the manufacturer to carry out this table 3 6 x 19 (12/6/1) FC 5to 7 work. BS 302 : 1968 table 1 6 x 19 (9/9/1) FC 8 to 16 11. Certificate of test and examination table 2 6 x 19 (12/6 i-F /I) FC 11 to 16 table 4 6 x 26 to 6 x 41 series FC 13 to 40 Every sling or batch ofslings shall be provided with a dated table 10 6 x 19 (9/9/1) IWRC 8to16 test certificate(s) giving the following information: table 11 6x 19 (12/6+6 F/1) IWRC 11 to 16 (a) the name of the maker or supplier; table 12 6 x 26 to 6 x 41 series IWRC 13 to 40 (b) the number of this British Standard, i.e. BS 1290*; All constructions shall be ordinary lay. (c) description of the sling (see clause 1); î3. Safe working load (dl the SWL and the safety factor used to calculate it (see appendix BI; The SWLs of slings constructed from general engineering ropes shall be as given in table 1 (for fibre cores) or table 2 (e) a statement that the maker or supplier holds, and (for steel cores), See also appendix B. will make available on request, the certificates relating *Marking BS 1290 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturer's responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ in the case of certification marks administered by BSt or to the appropriate authority for other certification marks. 5 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BSI BS*L270 83 W 3b24bb9 033741.17 B n o! I * 8 u-- w - =P g: cii B !- I m c a CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess BSI BSm1290 83 œ 1624669 0133450 4 œ BS 129Q : 1983 B Rope SWL diameter Singleleg Multi-leg slings slings: singlepart Leg angle (see figure 5) Leg angle (see figure 5) terminated O" < <y < 90" 90" < 01 Q IZO0 by ferrules O" Q ß Q 45O 4$O < p < 60" or splices Two-leg: singlepart leg Three- or four leg: singlepart leg Two-leg: singlepart leg Four-leg: single-part leg A L M N P R rnm t t t t t 8 0.822* 1.1 1.7 Q.822" 1.2 9 1 .o 1.4 2.1 1 .o 1.5 10 1.3 1.8 2.7 1.3 1.9 11 1.5 2.1 3.1 1.5 2.2 12 1.8 2.5 3.8 1.8 2.7 13 2.1 2.9 4.4 2.1 3.1 14 2.5 3.5 5.2 2.5 3.7 16 3.3 4.6 6.9 3.3 4.9 18 4.1 5.7 8.6 4.1 6.1 I9 4.6 6.4 9.6 4.6 6.9 20 5.1 7.1 10.7 5.1 7.6 22 6.2 8.7 13.0 6.2 9.3 24 7.4 10.3 15.5 7.4 11.1 26 8.6 12.0 18.0 8.6 12.9 28 10.0 14.0 21 .o 20.0 15.0 32 13.1 18.3 27.5 13.1 19.6 35 15.7 22.0 33.0 15.7 23.5 36 16.6 23.2 34.8 16.6 24.9 38 18.5 25.9 38.8 18.5 27.7 40 20.6 28.8 43.2 20.6 30.9 'SWLs of less than 1.0 t are normally cited in kilograms (see appendix 6). NOTE 1. The coefficients used in calculating these values are set out in appendix B. NOTE 2. A cautionary note regarding the minimum diameter of bearing paints for soft eyes is given in appendix B. O Section three. Specific requirements for slings constructed from galvanized marine ropes in accordance with BS 365 14. Rope construction Slings shall be constructed from 6 x 24 fibre-cored rope of the type given in table 4 of BS 365 : 1968. 15. Safe working load The SWLs of slings constructed from ropes in accordance with BS 365 shall be as given in table 3. See also appendix B. 7 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess ES1 BS*KL290 83 W Lb24bb9 CIL39451 b BS 1290 : 1983 Table 3. SWLs for slings constructed from ropes in accordance with BS 365 Rope SWL diameter Singleleg rwo-leg slings ;lings: singlepart Leg angle .eg angle (see figure 5) see figure 5) oQ < (Y < goo 90" < (Y < 1 20° A c T mm t t 8 0.520" 0.728" 0.520" 10 0.81 2 1.1 0.812 12 1 .I 1.5 1.1 14 1.6 2.2 1.6 16 2.1 2.9 2.1 a is the angle between the legs 18 2.6 3.6 2.6 (a) Two-leg sling 20 3.2 4,5 3.2 22 3.9 5.4 3.9 24 4.7 6.6 4.7 26 5.5 7.7 5.5 28 6.3 8.8 6.3 32 8.3 11.6 8.3 36 10.5 14.7 10.5 40 13.0 18.2 13.0 *SWLs of less than 1.0 tare normally cited in kilograms, to the nearest kilogram. (I is taken as 23 p is the maximum angle of any leg to the vertical (b) Three-leg sling Q is the maximum angle between any two diagonally opposite legs íc) Four-leg sling Figure 5. Leg angles of two-, three- and four-leg slings 8 CCOOPPYYRRIIGGHHTT BBrriittiisshh SSttaannddaarrddss IInnssttiittuuttiioonn oonn EERRCC SSppeeccss aanndd SSttaannddaarrddss LLiicceennsseedd bbyy IInnffoorrmmaattiioonn HHaannddlliinngg SSeerrvviicceess