1、BSI Standards PublicationBS ISO 17746:2016Steel wire rope net panelsand rolls Definitions andspecificationsBS ISO 17746:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17746:2016.The UK participation in its preparation was entrusted to TechnicalCommittee I
2、SE/106, Wire Rod and Wire.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.
3、Published by BSI Standards Limited 2016ISBN 978 0 580 78011 0ICS 77.140.65Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2016.Amendments/corrigenda issued
4、since publicationDate T e x t a f f e c t e dBS ISO 17746:2016 ISO 2016Steel wire rope net panels and rolls Definitions and specificationsPanneaux et rouleaux de filet en cble dacier Dfinitions et spcificationsINTERNATIONAL STANDARDISO17746First edition2016-05-15Reference numberISO 17746:2016(E)BS I
5、SO 17746:2016ISO 17746:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, incl
6、uding 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 ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel.
7、 +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 17746:2016ISO 17746:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Description of use and applications . 25 Wire rope net panels 25.1 General . 25.2 Double knot 45.3 Clips or staple knot 45.4 Wi
8、thout connection clips . 46 Properties of wire used in knots 56.1 Mechanical properties 56.2 Coating properties . 67 Wire rope properties . 68 Rope net properties . 68.1 Ageing and corrosion resistance . 68.1.1 Zn class B 68.1.2 Zn class A 68.1.3 Zn95Al5 class B . 68.1.4 Zn95Al5 class A . 68.1.5 Adv
9、anced metallic coatings (as Zn90Al10) class B 68.1.6 Advanced metallic coatings (as Zn90Al10) class A 68.1.7 Additional organic coating 68.2 Maximum breaking load of knot 78.3 Maximum load of tear break of knot 78.4 Rope net tests (longitudinal tensile test with no lateral contraction and load beari
10、ng capacity test) 89 Sampling and testing 810 Inspection and documentation . 8Annex A (informative) Possible metallic coating options . 9Annex B (informative) Load bearing capacity tests .11Annex C (informative) Net tensile strength (longitudinal tensile test with no lateral contraction) .17Bibliogr
11、aphy .19 ISO 2016 All rights reserved iiiContents PageBS ISO 17746:2016ISO 17746:2016(E)ForewordISO (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 t
12、hrough 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 colla
13、borates 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 approva
14、l 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 subj
15、ect 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
16、 name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Tech
17、nical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 17, Steel wire rod and wire products.iv ISO 2016 All rights reservedBS ISO 17746:2016INTERNATIONAL STANDARD ISO 17746:2016(E)Steel
18、 wire rope net panels and rolls Definitions and specifications1 ScopeThis International Standard specifies the characteristics of steel wire rope net panels and rolls for retaining of unstable slopes controlling and preventing rockfalls and loose debris flow along roads, highways and railway, urban
19、areas, mines and quarries, and for snow avalanche protection.Steel wire rope net panels and rolls are produced from metallic-coated wire ropes.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. Fo
20、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2408, Steel wire ropes for general purposes Minimum requirementsISO 7500-1, Metallic materials Calibration and verification of static uniax
21、ial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring systemISO 7989-1, Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 1: General principlesISO 7989-2:2007, Steel wire and wire products Non-ferrous metalli
22、c coatings on steel wire Part 2: Zinc or zinc-alloy coatingISO 10474, Steel and steel products Inspection documentsISO 22034-1, Steel wire and wire products Part 1: General test methodsEN 10204, Metallic products Types of inspection documents3 Terms and definitionsFor the purposes of this document,
23、the following terms and definitions apply.3.1wire rope net panelpanel made from wire rope (3.2) or ropes arranged in a plain structure and connected at the points of overlapping by wire knots, by interlinking of the wire ropes or by metallic clips (3.5)3.2wire ropestandard steel wire ropes according
24、 to ISO 24083.3wire rope net sizesaverage value of the net dimensionsNote 1 to entry: Distance between two ropes in the same direction. ISO 2016 All rights reserved 1BS ISO 17746:2016ISO 17746:2016(E)3.4knotpoint of connecting, overlapping or crossing of the net wire ropesNote 1 to entry: A knot can
25、 be released using wires, clips (3.5) or by twisting the wrapping ropes.3.5clipsmetallic shell-like elements with fastening tabs to be used for forming connections between adjacent ropes3.6knot without clipsknot (3.4) of panel in which the overlapping points of the wrapping ropes are connected by tw
26、isting the wire ropes (3.2)3.7nominal net sizedistance between two junctions when measured along any single rope3.8dimensions of a panellength and width expressed in metres3.9advanced metallic coatingmetallic coating with a not specified composition having a superior corrosion resistance4 Descriptio
27、n of use and applicationsThe typical use for the considered products is retaining of unstable slopes, controlling and preventing rockfalls and loose debris flow along roads, highways and railway, urban areas, mines and quarries, and for snow avalanche protection.Figure 1 shows some relevant examples
28、 of applications of wire rope net panels.5 Wire rope net panels5.1 GeneralWire rope net panels are made of square nets or other shapes (e.g. triangular, jersey, rhomboidal, etc.) of nets manufactured with one or more than one rope as shown in Figure 1.Wire rope net can be manufactured both in panels
29、 and in rolls.2 ISO 2016 All rights reservedBS ISO 17746:2016ISO 17746:2016(E)Key1 net rope2 perimetral rope3 knotaOptional.Figure 1 Examples of wire rope net panels and their components ISO 2016 All rights reserved 3BS ISO 17746:2016ISO 17746:2016(E)The knot can be made in the different ways descri
30、bed in 5.2 to 5.4.5.2 Double knotThis kind of knot (see Figure 2) is made by two bindings, each one obtained by looping a pair of steel 3,00 mm wires coated with a zinc-aluminium-5 % alloy. The two bindings tightly envelop the ropes crossing each other.Key1 steel wire2 net ropeFigure 2 Example of do
31、uble knotThe use of single knot may be agreed between the supplier and purchaser, provided that performance to punching tests of the panel meets the project requirement.5.3 Clips or staple knotIn this kind of panel (see Figure 3), the overlapping points of the wrapping rope are connected using elect
32、ro-plated clips, which are made of two half-shells pressure-closed.Figure 3 Examples of clips knot and staple knot (patented)5.4 Without connection clipsSee Figure 4.4 ISO 2016 All rights reservedBS ISO 17746:2016ISO 17746:2016(E)Figure 4 Example of wire rope net where knot is formed without connect
33、ion clipsThe main properties of the wire ropes panels are specified in Table 1.Table 1 Main properties of wire ropes panelItems Nominal net sizeammNet wire ropes Peripheral wire ropes (optional)Diameter (mm) and typebMinimum breaking load (kN)Diameter (mm) and typebMinimum breaking load (kN)Wire rop
34、e net panel Double knot250 250 8 mm 6 7 + WC 40,7 10 mm 6 19 + WC 63,0300 300 10 mm 6 19 + WC 63,0 12 mm 6 19 + WC 90,7400 400 12 mm 6 19 + WC 90,7 14 mm 6 19 + WC 124,016 mm 6 19 + WC 161,0Wire rope net panel Clips knot200 200 8 mm 6 7 + WC 40,7 10 mm 6 19 + WC 63,0250 250 12 mm 6 19 + WC 90,7300 3
35、00 14 mm 6 19 + WC 124,016 mm 6 19 + WC 161,0Wire rope net rolls without connection clips250 250 8,6 mm (3 4) mm 61,4 12 mm 6 19 + WC 90,7275 275 6,6 mm (3 3) mm 36,7 16 mm 6 19 + WC 161,3aThe tolerance on the net nominal size is 10 % but can change in relation to the panel dimensions.bRope type (se
36、e ISO 2408), rope grade 1 770 N/mm2.Other net sizes are possible, in accordance with project design requirements.6 Properties of wire used in knots6.1 Mechanical propertiesThe tensile strength of the wire used in knot shall be a minimum of 350 N/mm2. The tensile strength of the wire used in knot sha
37、ll be tested in accordance with ISO 22034-1. ISO 2016 All rights reserved 5BS ISO 17746:2016ISO 17746:2016(E)6.2 Coating propertiesThe steel wire used in knot must be a nominal minimum diameter of 3,00 mm and coated with a zinc-aluminium alloy in accordance with the ISO 7989-1 and ISO 7989-2, class
38、A. Method of assessment and acceptance criteria for zinc and zinc alloy coating weight are prescribed in ISO 7989-2:2007, Clause 5.Lower wire diameters may be used provided that performance characteristics of the whole net panel can be demonstrated to be appropriate for the intended use.The corrosio
39、n resistance of the connections (clips, staples, etc.) shall exceed the corrosion resistance of the ropes after the manufacturing.7 Wire rope propertiesWire ropes used in wire rope net panels shall be in accordance with ISO 2408:2004, Table 1. Non-ferrous metallic coatings on steel wire shall be in
40、accordance with ISO 7989-2, class A or class B.8 Rope net properties8.1 Ageing and corrosion resistance8.1.1 Zn class BWhen subjected to the neutral salt spray test according to the procedures in ISO 9227, after a period of 200 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.2
41、 Zn class AWhen subjected to the neutral salt spray test according to the procedures in ISO 9227, after a period of 500 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.3 Zn95Al5 class BWhen subjected to the neutral salt spray test according to the procedures in ISO 9227, after
42、 a period of 500 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.4 Zn95Al5 class AWhen subjected to the neutral salt spray test according to the procedures in ISO 9227, after a period of 1 000 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.5 Advanced me
43、tallic coatings (as Zn90Al10) class BWhen subjected to the neutral salt spray test according to the procedures in ISO 9227, after a period of 1 000 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.6 Advanced metallic coatings (as Zn90Al10) class AWhen subjected to the neutral s
44、alt spray test according to the procedures in ISO 9227, after a period of 2 000 h of exposure, the net samples shall not show more than 5 % of DBR.8.1.7 Additional organic coatingWire ropes used in wire rope net panel could be additionally organic coated. The polymeric coating material mechanical ch
45、aracteristics (tensile strength and elongation), after exposure to UV-rays, the 6 ISO 2016 All rights reservedBS ISO 17746:2016ISO 17746:2016(E)number of hours QUV-A (ISO 4892-3 exposure mode 1) shall not decrease by more than 25 % from the initial test results. These results cannot be compared to I
46、SO 9227.8.2 Maximum breaking load of knotFor wire knots (double or single) and clips knots, the value of the maximum breaking load shall be evaluated using the “test on knot” as reported below. See Figure 5.For the test, the element is mounted in a calibrated test traction rig. The test should allow
47、 the evaluation of the slipping force of the rope through the knot. Tests shall be performed on a minimum number of three samples.The tensile test machine shall be of class 1 according to ISO 7500-1 (definition of class of testing machine).KeyF traction force1 fixed endFigure 5 Scheme for test on kn
48、ot Maximum slipping force8.3 Maximum load of tear break of knotFor wire knots (double or single) and clips knots, the value of the maximum load of tear break shall be evaluated using the “test on knot” as reported below.The value of the maximum load of tear break shall be evaluated using the followi
49、ng test procedure (see Figure 6).For the test with the element, mount the element in a calibrated test traction. The test should allow the evaluation of the breaking force of the knot defined as maximum load of tear break.The testing machine shall be of class 1 according to ISO 7500-1.Tests shall be performed on a minimum number of three samples. ISO 2016 All rights reserved 7BS ISO 17746:2016ISO 17746:2016(E)KeyF traction force1 fixed endaSection of the w
