SIST EN 1492-4:2004+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Tekstilne obese - Varnost - 4. del: Dvigalne obese iz naravnih in umetnih vlaken za splošno uporaboTextile Anschlagmittel - Sicherheit - Teil 4: Anschlag-Faserseile für allgemeine Verwendung aus Natur- und ChemiefaserseilenElingues textiles - Sécurité - Partie 4: Elingues de levage en cordage en fibres naturelles et chimiques pour service généralTextile slings - Safety - Part 4: Lifting slings for general service made from natural and man-made fibre ropes53.020.30Pribor za dvigalno opremoAccessories for lifting equipmentICS:Ta slovenski standard je istoveten z:EN 1492-4:2004+A1:2008SIST EN 1492-4:2004+A1:2009en,fr,de01-januar-2009SIST EN 1492-4:2004+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1492-4:2004+A1
November 2008 ICS 53.020.30 Supersedes EN 1492-4:2004 English Version
Textile slings - Safety - Part 4: Lifting slings for general service made from natural and man-made fibre ropes
Elingues textiles - Sécurité - Partie 4: Elingues de levage en cordage en fibres naturelles et chimiques pour service général
Textile Anschlagmittel - Sicherheit - Teil 4: Anschlag-Faserseile für allgemeine Verwendung aus Natur- und Chemiefaserseilen This European Standard was approved by CEN on 12 February 2004 and includes Amendment 1 approved by CEN on 11 September 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1492-4:2004+A1:2008: ESIST EN 1492-4:2004+A1:2009

Information for use and maintenance to be provided by the manufacturer.22 Annex B (informative)
Working load limits for various modes of use.24 Annex C (informative)
Suggested content of information to be provided by the manufacturer with fibre rope slings.36 Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""".40 Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""".41 Bibliography.42
In this standard: Annex A is normative, and gives the requirements for information on use and maintenance to be provided by the manufacturer with fibre rope slings conforming to this standard. Annex B is informative, and gives the working load limits for different configurations and types of material for fibre rope slings to this standard. Annex C is informative, and provides some detailed information for use and maintenance which may be appropriate in compiling the information in accordance with annex A. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN ISO 12100-2. SIST EN 1492-4:2004+A1:2009

3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN ISO 1968:2004 and the following apply.
3.1 fibre rope sling flexible sling comprising one or more parts of identical fibre rope, terminating in spliced eyes with or without thimbles and fittings, or in the case of an endless sling, joined to itself with a splice
3.2 multi-leg sling fibre rope sling assembly, consisting of two, three or four identical legs attached to a master link
3.3 splice specified method of laying the tail end strands of the rope into the strands of the standing part of the rope to form an eye or join the ends of the rope together
3.4 soft eye eye made by forming the end of the rope into a loop and by splicing the free end to the standing part
3.5 thimbled or hard eye spliced eye containing a rigid thimble SIST EN 1492-4:2004+A1:2009

3.6 thimble rigid, shaped component for insertion into an eye for the purpose of protecting the eye from contact damage, abrasion and deformation, see Figure 1
a) Heart shaped b) Reeving Figure 1 — Thimble 3.7 fitting loadbearing metal component, designed to be fitted and supplied as part of the sling, so as to permit the sling to be attached to other lifting accessories or connected to the load NOTE Thimbles are not included within the term ‘fitting’. 3.8 master link link, or link assembly, forming the upper terminal fitting of a multi-leg sling assembly by means of which the sling assembly is attached to the hook of a crane, other lifting machine or accessory
3.9 reference number number quoted in documentation which specifies the mass/metre, breaking force and other parameters of the fibre rope. The reference number corresponds to the approximate diameter in millimetres; minimum breaking force in daN. NOTE See EN 696, 697, 698, 699 and 1261. 3.10 nominal diameter specified diameter of the rope, which is usually used as the reference value for a given product
3.11 nominal length specified length of the sling, inclusive of fittings, from bearing point to bearing point NOTE See figures 2 to 5.
3.12 effective working length (EWL) actual finished length of the fibre rope sling, inclusive of fittings, from bearing point to bearing point SIST EN 1492-4:2004+A1:2009

3.13 coefficient of utilization ratio of the specified tensile strength of the rope to the WLL of the single part of spliced rope, taking into account the acceleration due to gravity (9,80665 m/s2) and is equal to 7 NOTE 1 Fittings may have a different coefficient of utilization from that of the rope to which they are connected. NOTE 2 This term has the same meaning as the term ‘working coefficient’ used in the Machinery Directive. 3.14 Assembly Factor (A) factor used in the calculation of the WLL of the sling assembly that takes into account the assembly of the sling, the number of legs and the inclination angles (β), see Figure 10
3.15 Mode Factor (M) factor to be applied by the user to the WLL of a fibre rope sling in order to arrive at the maximum load that maybe lifted for a given mode of use 3.16 Working load limit (WLL) maximum mass which a fibre rope sling is designed to sustain in straight pull or at the rated angle, in general service 3.17 competent person designated person, suitably trained and qualified by knowledge and practical experience, and with the necessary instructions to enable the required tests and examination to be carried out 4 Hazards The accidental release of a load, or release of a load due to failure of a component puts at risk, either directly or indirectly, the safety or health of those persons within the danger zone. In order to provide the necessary strength and durability of lifting accessories this part of EN 1492 specifies requirements for the design, manufacture and testing to ensure the specified levels of performance are met. Endurance has not been identified as a hazard when fibre rope slings having the specified levels of performance given in this part of EN 1492 are used in general lifting service. Since failure can be caused by the incorrect choice of WLL and specification of lifting accessory. This Part of EN 1492 also gives the requirements for marking and the manufacturer’s certificate. Aspects of safe use associated with good practice are given in annex A (normative) and annex C (informative). Table 1 lists those hazards in so far as they are dealt with in this standard that require action to reduce those risks identified by risk assessment as being specific and significant for fibre rope slings made of sisal, hemp, manila, polyamide, polyester and polypropylene. SIST EN 1492-4:2004+A1:2009

Table 1 — Hazards and associated requirements
Hazards identified in annex A of EN 1050: 1996 Relevant clause of annex A of EN ISO 12100-2:2003 Relevant clause/sub-clause of this part of EN 1492 1.e) Mechanical hazard due to inadequacy of strength 1.3.2 4.1.2.3 4.1.2.5 4.2.4 1.7.3 4.3.2 4.2.4 5 5 5 6 7 7 8 15 Error of fitting hazard 1.5.4 5 17 Falling or ejected objects hazard 1.3.3 annex A 26 Insufficient instruction for the driver/operator 1.7.4 4.4.1 9, annex A 9, annex A 27.1.5 Inadequate holding devices/accessories hazard 4.4.1 5.7 27.6 Inadequate selection of lifting accessories hazard 4.1.2.5 4.3.2 5.7 and 6 7
5 Safety requirements 5.1 Materials The fibre rope from which the sling is manufactured shall be from one of the materials and to the specification given in Table 2. Table 2 — Types of fibre rope for sling manufacture Type of fibre rope Specification Manila (Ma) EN 698
Hemp (Ha) EN 1261 Sisal (Si) EN 698
Polyamide (PA) EN 696
Polyester (PES) EN 697
Polypropylene (PP) EN 699
NOTE 1 The definitions of these fibres are given in ISO 2076 and ISO 6938. The constituent materials may be determined in accordance with ISO 1833. NOTE 2 Attention is drawn to the differing resistance of fibres to chemicals, which is summarized in annex C. SIST EN 1492-4:2004+A1:2009

A single leg sling shall be formed from a single piece of rope and shall have eyes, with or without thimbles and fittings, spliced at each end. Figure 2 shows three typical examples of single leg slings.
Figure 2 — Typical single leg slings 5.2.2 Endless sling
An endless sling shall be formed from a single piece of rope and shall have the ends joined together by a single splice. Figure 3 shows an endless sling. l1 Figure 3 — Endless sling Alternatively, an endless sling shall be laid as a grommet from a single strand of rope (see 5.5.5). SIST EN 1492-4:2004+A1:2009

A two leg sling shall comprise two identical sling legs, with or without thimbles and terminal fittings; the eye of one end of each leg shall be made around a master link. Figure 4 shows a typical two leg sling.
Figure 4 — Typical two leg sling 5.2.4 Three and four leg slings
A four leg sling shall comprise four identical sling legs, with or without thimbles and terminal fittings, the eye of one end of each leg shall be made around an intermediate link so that two legs are attached to each intermediate link. The intermediate links shall be attached to a master link. Three leg slings shall be produced in the same way, but two legs shall be attached to one intermediate link and one leg to the other. Figure 5 shows a typical four leg sling. SIST EN 1492-4:2004+A1:2009

5.4.2 Thimbled or hard eyes The thimbles used to form thimbled, or hard, eyes (see Figure 7) shall comply with EN 13411-1 and have a corrosion resistant finish. NOTE 1 Steel thimbles should not be black finish but should be suitably plated or galvanised to resist corrosion.
Figure 7 — Thimbled or hard eye NOTE 2 The use of thimbled (hard) eyes is recommended when fittings form part of the fibre rope sling. NOTE 3 The fitting of heart shaped thimbles will prevent the sling being used in choke hitch. In such cases, either a soft eye or thimbles of a shape and size suitable for reeving may be used. SIST EN 1492-4:2004+A1:2009

All splicing shall be carried out by a trained and competent splicer, samples of whose splices have been successfully verified by type testing in accordance with 6.3. 5.5.2 Splices Where 3 and 4 strand laid ropes are spliced by short splices, the splice shall comply with the following requirements: a) All the tucks of the splice shall be against the lay of the rope. b) For polyamide, polyester multifilament ropes and polypropylene monofilament ropes, either five full tucks shall be made; alternatively four full tucks with all of the yarns in the strands shall be made, followed by a further tuck with not more than half of the material cut out of each strand and a final tuck with not less than a quarter of the original strand material. c) For polypropylene fibrillated film and staple ropes and for natural fibre ropes, not less than four full tucks shall be made, each with all of the yarns in the strands. d) After completion of splicing, the protruding strands, or parts of strands, shall be cut at a distance of not less than one nominal rope diameter from the standing part of rope. As an alternative to c), for polypropylene fibrillated film and staple fibre ropes and for natural fibre ropes, one fewer full tuck is permissible, in which case the length of the protruding strands after completion of the splicing shall not be less than three times the nominal diameter of the rope. e) In the case of endless slings, the splicing requirements given in a) to d) shall apply to each side of the marrying point of the rope (see Figure 8)
Figure 8 — Marrying point of splice for endless slings
f) Where the protruding parts of the strands are contained, e.g. by binding, gluing, tapering etc, to improve the appearance of the finished splice, such finishing shall not affect the performance of the splice. In the case of full strands an alternative method of finishing the splice, known as dogging, where the emergent strands are separated into identical proportions and then bound (seized) one half of the emergent strand to the adjacent half of the next emergent strand and so on around the rope (see Figure 9) is permissible. Tapered splices shall not be subject to dogging. SIST EN 1492-4:2004+A1:2009

Figure 9 — Dogging (three strand rope) g) Long splicing of endless rope slings is permissible but, where used, the circumference of the sling shall not be less than 400 times the reference number of the rope and the length of the splice shall not be less than 100 times the reference number of the rope. The working load limit of the sling shall not be greater than 60% of the value as calculated in accordance with 5.8 and for modes of use as given in Tables B2, B4, B6, B10 and B12. 5.5.3 Alternative splicing methods The method of splicing known as the ‘Liverpool splice’ where the tucks are made with the lay of the rope shall not be used. In the case of 8 strand plaited ropes, the rope manufacturer’s written splicing procedures shall be obtained and strictly followed. 5.5.4 Length between splices For single leg slings and the individual legs of multi-leg slings, there shall be a minimum length of rope between the emergence of the final tucks of the splice of 20 times the nominal diameter of the rope. 5.5.5 Endless Grommet Where an endless sling of 3 or 4 strand laid rope is made as a grommet, it shall meet the following requirements: a) The parent strand of which the grommet is laid shall not contain any joints or splices. b) The ends of the parent strand shall be spliced by turning them at least 4 times around each other in the case of polypropylene fibrillated film, staple ropes or natural fibre ropes and at least 5 times in the case of polyamide, polyester multifilament or polypropylene monofilament ropes. c) The protruding parent strand ends shall be laid through one or two neighboring strands of the grommet to prevent the splice unravelling. Thereafter the strand ends shall be cut not shorter than 1,5 times the parent strand diameter. d) The working load limit for endless grommet slings produced in accordance with these requirements shall be identical to that of endless slings made by short splicing. e) Endless grommet slings produced in accordance with these requirements shall be type tested in accordance with 6.3.
5.6 Effective working length (EWL) The effective working length (l1) of a fibre rope sling (see Figures 2 to 5 inclusive) shall not differ from the nominal length by more than 3%, when laid flat under hand tension and measured with a steel tape or rule graduated in increments of 1 mm. The length of each leg of a multi-leg sling shall not differ from the lengths of the other legs by more than 2,5%. SIST EN 1492-4:2004+A1:2009

5.8 Calculation of working load limit (WLL) The working load limit of a fibre rope sling shall be calculated as follows:
90% of specified breaking force of fibre rope
WLL of spliced rope =
-----------------------------------------------------------
x assembly factor A
Coefficient of utilization
Where: the breaking force is expressed in kN
the coefficient of utilization is 7
the assembly factor is as given in Figure 10
NOTE For mode factors and use see annex B a) Single strop
1) straight pull
A = 1,0
b) Multiple fibre rope leg sling
2a) 2-leg fibre rope sling 2b) 3-leg fibre rope sling 3) 4-leg fibre rope sling A = 1,4
β = 0° - 45° A = 2,1
β = 0° - 45° A = 2,1
β = 0° - 45°
c) Endless sling
1) straight pull
A = 2,0
NOTE A = assembly factor Figure 10 — Assembly factors for single, multi-leg and endless fibre rope slings SIST EN 1492-4:2004+A1:2009

a) identification of rope, including nominal size;
b) identification of manufacturer’s control/identification of splicer;
c) identification and grade of fittings. 6 Verification 6.1 General 6.1.1 All testing and examination shall be carried out using a tensile test machine conforming to the requirements of class 1 of EN ISO 7500-1:1999 and, where applicable, a steel tape or rule graduated in increments of 1 mm. 6.1.2 During load tests, the force shall be applied to the test pieces so that the elongation of the specimen takes place at a maximum rate of 110 mm/min per 1000 mm length of the specimen. 6.1.3 The test piece shall not be pre-loaded prior to testing, unless all of the slings of that type are subject to identical pre-loading, in which case they shall not be pre-loaded to more than two times the WLL. NOTE During load testing procedures, considerable energy is stored in the rope under tension. If the sample breaks, this energy will be suddenly released. Suitable precautions should therefore be taken to protect the safety of persons in the danger zone. 6.2 Qualification of personnel All testing and examination shall be carried out by a competent person. 6.3 Type test to verify sling legs 6.3.1 For the purposes of type test verification, ropes are grouped in the following range of rope sizes: a) 16 mm to 24 mm; b) greater than 24 mm to 32 mm; c) greater than 32 mm.
6.3.2 For each type of rope (including change of source of material), size range and splicing method to be used in the manufacture of slings, two test pieces shall be produced by each splicer. The rope size selected shall be representative of the middle of the relevant group, or in the case of ropes larger than 32 mm, in the middle of the range of ropes for which the splicer will be splicing eyes. Each of the two test pieces shall be made with a soft eye at each end and the distance between the tails of the splices shall be at least 15 times the nominal rope diameter, so that four splices are presented for testing.
6.3.3 The test piece shall be mounted, straight and without twist, between the pins or bollards of the test machine. The diameter of the pins or bollards shall be such that an included angle between 20° and 30° is subtended by the loop of the splice. The specimen shall be subjected to a force equivalent to not less than 7 times the WLL of the specimen. 6.3.4 The test pieces shall have passed the test if the breaking force of both samples (i.e. 4 splices) submitted by the splicer is equal to, or greater than, the equivalent of 7 times WLL. SIST EN 1492-4:2004+A1:2009

6.5 Manufacturing tests 6.5.1 Slings shall be selected form the manufacturing batch for testing at least at the intervals given in Table 4 or every 3 years, whichever is the sooner. The selected slings shall be tested in accordance with the following requirements. NOTE The length of the sling for manufacturing test should be identical to the manufacturing batch. Testing of a shorter sling leg is only acceptable where the test machine facility is too short in length. Table 4 — Maximum testing intervals WLL of fibre rope sling Maximum quantity per type between tests Up to and including 2 t Over 2 t 1000 500
6.5.2 The sample shall be mounted, straight and without twist, between the bollards of the test machine. The diameter of the pins or bollards shall be such that an included angle of between 20° and 30° is subtended by the loop of the splice. The specimen shall be subjected to a force equivalent to not less than 7 times the WLL of the specimen. 6.5.3 If the specimen sustains the force equivalent to 7 times its WLL, it shall have passed the test. Testing beyond this force is not required. 6.5.4 If, during testing, the specimen does not sustain a force equivalent to seven times its WLL, but sustains a load of not less than 90% of this force, three further samples from the same batch shall be tested. If one or more of these samples does not sustain a force equivalent to seven times the WLL, the whole batch shall be rejected and deemed not to comply with this standard. SIST EN 1492-4:2004+A1:2009

7.1.1 The marking of the sling shall include the following: a) working load limit in straight lift in the case of single leg or endless slings, or for multi-leg slings having an angle β of 0° to 45°; b) material of the rope, e.g. manila, polyester etc; c) reference number of the rope and grade of fittings; d) nominal length in m; e) manufacturer’s name, symbol, trade mark or other unambiguous identification !and, where applicable, his authorised representative"; f) traceability code (see 5.9) g) number and part of this European Standard. h) mandatory marking
NOTE 1 Marking this European Standard number on or in relation to a product represents a manufacturer’s declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets with the requirements of the standard. Such a declaration is not to be confused with third-party certification of conformity. NOTE 2 For slings intended to be put on the market in the EEA, CE marking 7.1.2 The marking shall be in a type size of not less than 1,5 mm in height. 7.2 Labelling 7.2.1 The information specified in 7.1 shall be marked on a label attached to the sling as follows: a) on single legs with soft eyes, in one eye adjoining the splice or on the standing part of rope at the end of the splice; b) on single legs with thimbles, on the standing part of rope at the end of the splice; c) on multi-leg slings, on a durable label (e.g. a round tag) attached to the master link or on one leg of the sling as in a); d) on endless slings, at the end of the splice.
NOTE One suitable method for applying the marking is to inscribe the details onto a plastic sleeve threaded on the rope and shrunk to it, with a clear plastic sleeve shrunk over the marked sleeve to protect it from soiling.
NOTE Items b) to g) inclusive form the designation of the sling or sling assembly.
9 Instructions for use Instructions for use shall accompany each sling or each delivery of slings supplied with a single order and shall conform to annex A. SIST EN 1492-4:2004+A1:2009

(normative)
Information for use and maintenance to be provided by the manufacturer A.1 Scope This annex gives guidance to the manufacturer as to the information on use and maintenance which shall be provided with fibre rope slings conforming to this part of EN 1492.
NOTE Annex C is informative, and provides some detailed information for use and maintenance which may be appropriate. A.2 General The manufacturer of fibre rope slings shall provide documented information, covering the subjects listed below, with each commercially indivisible batch of slings (see clause 9). Informative annex C contains guidance to assist the manufacturer in the preparation of this information. A.3 Limitations on the use of the sling due to environmental conditions or hazardous applications (see C.1) a) selective material resistance to chemicals; b) restrictions due to temperature; c) susceptibility to cutting and abrasion; d) degradation due to ultra-violet radiation. A.4 Before putting the sling into first use (see C.2.1) a) availability of manufacturer’s certificate; b) availability of instruction and training. A.5 Before each period of use (see C.2.2 and C.2.3) a) inspection procedure; b) presence of label and legibility of marking; c) withdrawal criteria.
A.6 Selection and use of fibre rope slings (see C.3) a) determination of the mass of the load, its centre of gravity, attachment points and proposed method of attachment; b) observance of the marked WLL and mode factors. In the case of multi-leg slings, this will include restrictions on angle of sling legs; c) attachment of sling to hook of lifting machine; d) attachment of sling to load; direct attachment, choke hitch, basket hitch, special fittings, other lifting accessories; e) protection of sling and load; f) controlling rotation of the load; g) ensuring an even balance of the load, avoidance of shortening sling legs, e.g., by twisting, knotting etc; h) shock loading; i) safety of personnel; j) clamping force; k) preparation of landing site; l) detachment of sling; m) correct storage of sling. A.7 Periodic thorough examination and maintenance a) withdrawal criteria, including missing/damaged label and illegible marking; b) records of examination.
Working load limits for various modes of use B.1 Scope This annex gives, in table form, the working load limits for different configurations and types of material for fibre rope slings conforming to this part of EN 1492. The WLL’s shown have been calculated in accordance the requirements of clause 5.8.
Table B.1. — Working load limits for fibre rope slings made of polyamide ropes according to EN 696, Form A (3-strand hawser laid) and Form L (8-strand plaited) constructions for single slings Working load limits WLL Straight lift Choked lift Basket hitch, parallel 2 leg sling 3/4 - leg sling Ref: Number of rope EN 696
M = 1,0 β=45°≤60°
Form A
mm Form L
mm M = 1
t M = 0,8
t M =2, parallel
t M = 1,4 β = 0°≤45° t M = 2,1 β = 0°≤45° t 16 16 0,68 0,54 1,35 0,95 1,4 18 --- 0,85 0,68 1,7 1,2 1,8 20 20 1,1 0,88 2,2 1,5 2,3 22 --- 1,3 1,0 2,6 1,8 2,7 24 24 1,5 1,2 3,0 2,1 3,2 26 --- 1,8 1,4 3,6 2,5 3,8 28 28 2,1 1,7 4,2 2,9 4,4 30 --- 2,3 1,8 4,6 3,2 4,9 32 32 2,6 2,1 5,2 3,6 5,5 36 36 3,2 2,6 6,4 4,5 6,7 40 40 3,8 3,0 7,6 5,3 8,0 44 44 4,5 3,6 9,0 6,3 9,5 48 48 5,4 4,3 10,8 7,6 11,3 NOTE 1 Slings having working loads below 1 tonne are usually marked in kilograms. 1t = 1000 kg. NOTE 2 This table is for rating purposes only and does not indicate proposed methods of use. NOTE 3 The handling tolerance for fibre rope slings or parts of fibre rope slings indicated as vertical is 6° NOTE 4 The WLL for form B (4-strand, shroud-laid) is 10% less. NOTE 5
Mode factor M for symmetrical positioning of load
Form A
mm Form L
mm M = 1
t M = 0,8
t M = 1,4 β = 0°≤ 45° t M = 2
t 16 16 1,35 1,1 1,9 2,7 18 --- 1,7 1,35 2,4 3,4 20 20 2,2 1,75 3,0 4,4 22 --- 2,6 2,0 3,6 5,2 24 24 3,0 2,4 4,2 6,0 26 --- 3,6 2,8 5,0 7,2 28 28 4,2 3,4 5,8 8,4 30 --- 4,6 3,6 6,4 9,2 32 32 5,2 4,2 7,2 10,4 36 36 6,4 5,2 9,0 12,8 40 40 7,6 6,0 10,6 15,2 44 44 9,0 7,2 12,6 18,0 48 48 10,8 8,6 15,2 21,6 NOTE 1 Slings having working loads below 1 tonne are usually marked in kilograms. 1t = 1000 kg. NOTE 2 This table is for rating purposes only and does not indicate proposed methods of use. NOTE 3 The handling tolerance for fibre rope slings or parts of fibre rope slings indicated as vertical is 6° NOTE 4 The WLL for form B (4-strand, shroud-laid) is 10% less. NOTE 5 For long spliced slings these WLL's must be reduced using the correction factor of 0,6. NOTE 6 Mode factor M for symmetrical positioning of load.
Table B.3. — Working load limits for fibre rope slings made of polyester ropes according to EN 697, Form A (3-strand hawser laid) and Form L (8-strand plaited) constructions for single slings Working load limits WLL Straight lift Choked lift Basket hitch, parallel 2 leg sling 3/4 - leg sling Ref: Number of rope EN 697
M = 1,0 β=45°≥60°
Form A
mm Form L
mm M = 1
t M = 0,8
t M =2, parallel t M = 1,4 β = 0°≤45° t M = 2,1 β = 0°≤45° t 16 16 0,52 0,42 1,05 0,73 1,1 18 --- 0,65 0,52 1,3 0,91 1,4 20 20 0,8 0,64 1,6 1,1 1,7 22 --- 1,0 0,8 2,0 1,4 2,1 24 24 1,2 096 2,4 1,7 2,5 26 --- 1,4 1,1 2,8 2,0 2,9 28 28 1,5 1,2 3,0 2,1 3,2 30 --- 1,8 1,4 3,6 2,5 3,8 32 32 2,0 1,6 4,0 2,8 4,2 36 36 2,5 2,0 5,0 3,5 5,2 40 40 3,0 2,4 6,0 4,2 6,3 44 44 3,7 3,0 7,4 5,0 7,7 48 48 4,3 3,4 8,6 6,0 9,0 NOTE 1 Slings having working loads below 1 tonne are usually marked in kilograms. 1t = 1000 kg. NOTE 2 This table is for rating purposes only and does not indicate proposed methods of use. NOTE 3 The handling tolerance for fibre rope slings or parts of fibre rope slings indicated as vertical is 6° NOTE 4 The WLL for form B (4-strand, shroud-laid) is 10% less. NOTE 5
Mode factor M for symmetrical positioning of load.
Table B.4. — Working load limits for fibre rope slings made of polyester ropes according to EN 697, Form A (3-strand hawser laid) and Form L (8-strand plaited) constructions for endless slings Working load limits WLL Straight lift Choked lift Basket hitch, Basket hitch, parallel Ref: Number of rope EN 697
Form A
mm Form L
mm M = 1
t M = 0,8
t M = 1,4 β = 0°≤ 45° t M = 2
t 16 16 1,05 0,84 1,45 2,1 18 --- 1,3 1,0 1,8 2,6 20 20 1,6 1,3 2,2 3,2 22 --- 2,0 1,6 2,8 4,0 24 24 2,4 1,9 3,4 4,8 26 --- 2,8 2,2 4,0 5,6 28 28 3,0 2,4 4,
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