Steel wire ropes -- Spliced eye terminations for slings

This document specifies minimum requirements for spliced eye terminations for wire rope slings. Prototype tests covering the type acceptance of splice methods are also specified in this document.

Câbles en acier -- Oeils épissés pour élingues

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Status
Published
Publication Date
03-Sep-2020
Technical Committee
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
01-Aug-2020
Completion Date
31-Jul-2020
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INTERNATIONAL ISO
STANDARD 8794
Second edition
2020-09
Steel wire ropes — Spliced eye
terminations for slings
Câbles en acier — Oeils épissés pour élingues
Reference number
ISO 8794:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 8794:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 8794:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Type of wire ropes .............................................................................................................................................................................................. 1

5 Splicing operation ............................................................................................................................................................................................... 2

6 Design requirements of the spliced eye termination ..................................................................................................... 2

7 Prototype tests ........................................................................................................................................................................................................ 2

7.1 General ........................................................................................................................................................................................................... 2

7.1.1 Prototype test condition ........................................................................................................................................... . 2

7.1.2 Samples .................................................................................................................................................................................... 3

7.1.3 Safety terms.......................................................................................................................................................................... 3

7.2 Tensile test to destruction ............................................................................................................................................................. 3

7.2.1 Test machine ........................................................................................................................................................................ 3

7.2.2 Procedure ............................................................................................................................................................................... 3

7.2.3 Qualified results of tensile test ............................................................................................................................ 4

7.3 Durability test .......................................................................................................................................................................................... 4

7.3.1 Test conditions................................................................................................................................................................... 4

7.3.2 Procedure ............................................................................................................................................................................... 5

7.3.3 Qualified results of durability test .................................................................................................................... 6

7.4 Qualified results of prototype test ......................................................................................................................................... 6

Annex A (informative) Method 1: Specification for hand-splicing of turn-back eye termination ........7

Annex B (informative) Method 2: Specification for hand-splicing of Flemish eye termination ...........10

Annex C (informative) Method 3: Specification for machine-aided hand-splicing of turn-

back eye termination ....................................................................................................................................................................................13

Bibliography .............................................................................................................................................................................................................................15

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 8794:2020(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 105, Steel wire ropes.

This second edition cancels and replaces the first edition (ISO 8794:1986), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— Clause 3 has been modified (terms and definitions);
— 7.1 has been added (general);
— 7.2 has been modified (tensile test to destruction);
— 7.3 has been modified (durability test);
— 7.4 has been added (qualified results of prototype test);

— Annex B has been added (method 2: specification for hand-splicing of Flemish eye termination);

— Annex C has been added (method 3: specification for machine-aided hand-splicing of turn-back eye

termination.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 8794:2020(E)
Steel wire ropes — Spliced eye terminations for slings
1 Scope

This document specifies minimum requirements for spliced eye terminations for wire rope slings.

Prototype tests covering the type acceptance of splice methods are also specified in this document.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/

compression testing machines — Verification and calibration of the force-measuring system

ISO 17893, Steel wire ropes — Definitions, designation and classification
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 17893 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
spliced eye termination

loop or eye at the end of a rope made by tucking the ends of the strands back into the main body of the rope

3.1.1
hand-splicing of turn-back eye termination
turn-back eye formed at a rope end secured by means of hand-splicing
3.1.2
hand-splicing of Flemish eye termination
Flemish eye formed at a rope end secured by means of hand-splicing
3.1.3
machine-aided hand-splicing of turn-back eye termination

turn-back eye formed at a rope end by means of a press machine with a plug for tucking and secured by

hand-splicing
3.2
tuck

single reeving of a strand to be spliced under a specified number of strands in the wire rope

4 Type of wire ropes

Six round stranded steel wire ropes with fibre or steel core in ordinary lay specified in ISO 2408 are

suitable for provision of spliced eye terminations. This method could apply to other type of steel wire

ropes for spliced eye terminations.
© ISO 2020 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 8794:2020(E)
5 Splicing operation

5.1 The splicing operation shall only be carried out by qualified splicers. The supplier shall be

responsible for ensuring that splicers are properly trained and qualified.

5.2 Examples of approved splicing methods are specified in the Annex A, Annex B and Annex C.

5.3 The splice shall be as one of the descriptions below:

— the splice shall have at least five tucks for each strand, at least three of them with the whole strand;

— the splice shall be made three full strands with four tucks and other three full strands with five

tucks comprising.

NOTE 1 Depending on the rope size, rope construction and the splicing method, more tucks per strand than

given above can be necessary.

NOTE 2 To get a smooth run-out of the splice, it can be advantageous to make the last tuck or the last two

tucks with the half of the wires cut out of the strands.

NOTE 3 Certain national and international conventions exist for regulating the types of spliced eye

terminations to be used in specific applications, e.g. dock works. It is important to take account such regulations

when this document is applied.

5.4 Slings using other splicing methods that conform to the requirements of this document can also be

accepted.

5.5 The wire ends of the spliced strands should be covered with a suitable serving at the option of the

purchaser.
6 Design requirements of the spliced eye termination

The design breaking strength of a spliced eye termination shall be at least 80 % of the minimum

breaking force of the respective wire rope as specified in ISO 2408.

If a steel core is spliced at least three tucks with the strands, it may be considered as a load-bearing

part of the rope.
7 Prototype tests
7.1 General
7.1.1 Prototype test condition

Prototype testing should be carried out before manufacture or if there are any changes in the conditions

as follow:

— when a greater change happened in the structures, raw materials or processes, which may affect

product performance during the production;

— if manufacture considers necessary, when it is discontinued for a period and then production is

resumed;

— if the delivery inspection results are quite different from the design requirement;

— if required by purchaser.
2 © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 8794:2020(E)
7.1.2 Samples

The tests shall be carried out on three rope sizes which shall represent, respectively, the smallest,

middle and largest of those sizes for which the system is recommended.

Two tests shall be carried out on each size of wire rope for which the splicing method is recommended.

The tests shall be carried out on the highest level of tensile grade for which the system is recommended.

7.1.3 Safety terms

Safety in the test should be a major concern for the operator of the machine, for observers and the

surroundings. Uncontained wires, during testing, can impact and penetrate objects at a great distance.

Adequate safety shields directly around samples, as well as around the operator and observers, should

be used as a minimum.
7.2 Tensile test to destruction
7.2.1 Test machine

The test machine shall be in conformance with ISO 7500-1. In general, the test shall be carried out at

ambient temperature within the limits of 10 °C to 35 °C according to ISO 3108.
7.2.2 Procedure

A spliced eye termination shall be formed without a thimble at each end of each test piece. See Figure 1.

The minimum distance L between the tails of the splices shall be in accordance with Table 1. The

force shall be applied by means of round pi
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 8794
ISO/TC 105
Steel wire ropes — Spliced eye
Secretariat: SAC
terminations for slings
Voting begins on:
2020­06­05
Câbles en acier — Oeils épissés pour élingues
Voting terminates on:
2020­07­31
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 8794:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 1 ----------------------
ISO/FDIS 8794:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH­1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 8794:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Type of wire ropes .............................................................................................................................................................................................. 1

5 Splicing operation ............................................................................................................................................................................................... 2

6 Design requirements of the spliced eye termination ..................................................................................................... 2

7 Prototype tests ........................................................................................................................................................................................................ 2

7.1 General ........................................................................................................................................................................................................... 2

7.1.1 Prototype test condition ........................................................................................................................................... . 2

7.1.2 Samples .................................................................................................................................................................................... 3

7.1.3 Safety terms.......................................................................................................................................................................... 3

7.2 Tensile test to destruction ............................................................................................................................................................. 3

7.2.1 Test machine ........................................................................................................................................................................ 3

7.2.2 Procedure ............................................................................................................................................................................... 3

7.2.3 Qualified results of tensile test ............................................................................................................................ 4

7.3 Durability test .......................................................................................................................................................................................... 4

7.3.1 Test conditions................................................................................................................................................................... 4

7.3.2 Procedure ............................................................................................................................................................................... 5

7.3.3 Qualified results of durability test .................................................................................................................... 6

7.4 Qualified results of prototype test ......................................................................................................................................... 6

Annex A (informative) Method 1: Specification for hand-splicing of turn-back eye termination ........7

Annex B (informative) Method 2: Specification for hand-splicing of Flemish eye termination ...........10

Annex C (informative) Method 3: Specification for machine-aided hand-splicing of turn-

back eye termination ....................................................................................................................................................................................13

Bibliography .............................................................................................................................................................................................................................15

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 8794:2020(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 non­governmental, 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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 105, Steel wire ropes.

This second edition cancels and replaces the first edition (ISO 8794:1986), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— Clause 3 has been modified (terms and definitions);
— 7.1 has been added (general);
— 7.2 has been modified (tensile test to destruction);
— 7.3 has been modified (durability test);
— 7.4 has been added (qualified results of prototype test);

— Annex B has been added (method 2: specification for hand-splicing of Flemish eye termination)

— Annex C has been added (method 3: specification for machine-aided hand-splicing of turn-back eye

termination.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 8794:2020(E)
Steel wire ropes — Spliced eye terminations for slings
1 Scope

This document specifies minimum requirements for spliced eye terminations for wire rope slings.

Prototype tests covering the type acceptance of splice methods are also specified in this document.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 7500­1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/

compression testing machines — Verification and calibration of the force-measuring system

ISO 17893, Steel wire ropes — Definitions, designation and classification
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 17893 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
spliced eye termination

loop or eye at the end of a rope made by tucking the ends of the strands back into the main body of the rope

3.1.1
hand-splicing of turn-back eye termination
turn-back eye formed at a rope end secured by means of hand-splicing
3.1.2
hand-splicing of Flemish eye termination
Flemish eye formed at a rope end secured by means of hand-splicing
3.1.3
machine-aided hand-splicing of turn-back eye termination

turn-back eye formed at a rope end by means of a press machine with a plug for tucking and secured by

hand­splicing
3.2
tuck

single reeving of a strand to be spliced under a specified number of strands in the wire rope

4 Type of wire ropes

Six round stranded steel wire ropes with fibre or steel core in ordinary lay specified in ISO 2408 are

suitable for provision of spliced eye terminations. This method could apply to other type of steel wire

ropes for spliced eye terminations.
© ISO 2020 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 8794:2020(E)
5 Splicing operation

5.1 The splicing operation shall only be carried out by qualified splicers. The supplier shall be

responsible for ensuring that splicers are properly trained and qualified.

5.2 Examples of approved splicing methods are specified in the Annex A, Annex B and Annex C.

5.3 The splice shall be as one of the descriptions below:

— the splice shall have at least five tucks for each strand, at least three of them with the whole strand;

— the splice shall be made three full strands with four tucks and other three full strands with five

tucks comprising.

NOTE 1 Depending on the rope size, rope construction and the splicing method, more tucks per strand than

given above can be necessary.

NOTE 2 To get a smooth run­out of the splice, it can be advantageous to make the last tuck or the last two

tucks with the half of the wires cut out of the strands.

NOTE 3 Certain national and international conventions exist for regulating the types of spliced eye

terminations to be used in specific applications, e.g. dock works. It is important to take account such regulations

when this document is applied.

5.4 Slings using other splicing methods that conform to the requirements of this document can also be

accepted.

5.5 The wire ends of the spliced strands should be covered with a suitable serving at the option of the

purchaser.
6 Design requirements of the spliced eye termination

The design breaking strength of a spliced eye termination shall be at least 80 % of the minimum

breaking force of the respective wire rope as specified in ISO 2408.

If a steel core is spliced at least three tucks with the strands, it may be considered as a load-bearing

part of the rope.
7 Prototype tests
7.1 General
7.1.1 Prototype test condition

Prototype testing should be carried out before manufacture or if there are any changes in the conditions

as follow:

— When a greater change happened in the structures, raw materials or processes, which may affect

product performance during the production;

— If manufacture considers necessary, when it is discontinued for a period and then production is

resumed;

— If the delivery inspection results are quite different from the design requirement;

— If required by purchaser.
2 © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/FDIS 8794:2020(E)
7.1.2 Samples

The tests shall be carried out on three rope sizes which shall represent, respectively, the smallest,

middle and largest of those sizes for which the system is recommended.

Two tests shall be carried out on each size of wire rope for which the splicing method is recommended.

The tests shall be carried out on the highest level of tensile grade for which the system is recommended.

7.1.3 Safety terms

Safety in the test should be a major concern for the operator of the machine, for observers and the

surroundings. Uncontained wires, during testing, can impact and penetrate objects at a great distance.

Adequate safety shields directly around samples, as well as around the operator and observers, should

be used as a minimum.
7.2 Tensile test to destruction
7.2.1 Test machine

The test machine shall be in conformance with ISO 7500­1. In general, the test shall be carried out at

ambient temperature within the limits of 10 °C to 35 °C accor
...

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