1、BS ISO 17745:2016Steel wire ring net panels Definitions and specificationsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 17745:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17745:2016.The UK participation in its p
2、reparation was entrusted to TechnicalCommittee ISE/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 correctappl
3、ication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 78010 3ICS 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 Commit
4、tee on 30 June 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 17745:2016 ISO 2016Steel wire ring net panels Definitions and specificationsPanneaux de filet en anneaux de fil dacier Dfinitions et spcificationsINTERNATIONAL STANDARDISO17745First edition2016-05-01
5、Reference numberISO 17745:2016(E)BS ISO 17745:2016ISO 17745:2016(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
6、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 ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-
7、1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 17745:2016ISO 17745:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Description of use and applications . 25 Wire ring net panels . 26 Properties of wire 36.1
8、 Ageing and corrosion resistance . 36.1.1 Zn class A 36.1.2 Zn95Al5 class B . 46.1.3 Zn95Al5 class A . 46.1.4 Advanced metallic coatings (as Zn90Al10) class B 46.1.5 Advanced metallic coatings (as Zn90Al10) class A 47 Wire net properties . 48 Wire ring net properties (longitudinal tensile test with
9、no lateral contraction and load bearing capacity test) . 49 Sampling and testing 410 Inspection and documentation . 5Annex A (informative) Possible metallic coating options . 6Annex B (informative) Load bearing capacity tests 8Annex C (informative) Net tensile strength (longitudinal tensile test wit
10、h no lateral contraction) .13Annex D (informative) Methods for measuring the dimensions of a ring net panel .15Bibliography .16 ISO 2016 All rights reserved iiiContents PageBS ISO 17745:2016ISO 17745:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of
11、 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. Int
12、ernational 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 in
13、tended 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 w
14、ww.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
15、 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 on the meaning of ISO specific terms and expr
16、essions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical 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 w
17、ire rod and wire products.iv ISO 2016 All rights reservedBS ISO 17745:2016INTERNATIONAL STANDARD ISO 17745:2016(E)Steel wire ring net panels Definitions and specifications1 ScopeThis International Standard specifies the characteristics of steel wire ring net panel for retaining of unstable slopes co
18、ntrolling and preventing rockfalls and loose debris flow along roads, highways and railway, urban areas, mines and quarries, and for snow avalanche protection produced from metallic-coated steel wire or advanced metallic coating.It is not applicable to anchors or soil nails for fixing of steel mesh
19、to an unstable slope.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
20、(including any amendments) applies.ISO 7500-1, Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring systemISO 7989-2:2007, Steel wire and wire products Non-ferrous metallic
21、 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 methodsISO 22034-2:2007, Steel wire and wire products Part 2: Tolerances on wire dimensions3 Terms and definitionsFor the p
22、urposes of this document, the following terms and definitions apply.3.1wire ringsteel ring obtained by looping a single steel wire with ends inserted into the thread or secured by one or more than one ferrules3.2nominal wire diameterdiameter used to designate the wireNote 1 to entry: It is expressed
23、 in millimetres (mm).3.3real wire diameteraverage value of the minimal and the maximal diameter, measured in the same section of a straight piece of wire, by means of a micrometer to 0,01 mm3.4wire ring sizeaverage value of the diameter of the single ringNote 1 to entry: See Figure 1. ISO 2016 All r
24、ights reserved 1BS ISO 17745:2016ISO 17745:2016(E)Figure 1 Ring size3.5wire ring net panelstructure of the panel net, made by rings connected with the contiguous rings3.6advanced metallic coatingmetallic coating with a non-specified composition and having a superior corrosion resistance3.7dimensions
25、 of a panellength and width expressed in metres or in number of ringsNote 1 to entry: See Annex D.3.8ring structureway that the ring is manufactured and constituted4 Description of use and applicationsThe typical use for the considered products is retaining of unstable slopes, controlling and preven
26、ting rockfalls and loose debris flow along roads, highways and railway, urban areas, mines and quarries, and for snow avalanche protection.5 Wire ring net panelsWire ring net panels are ring panels where each ring is made by several loop bindings, each one obtained by looping a single steel wire. Ea
27、ch ring is connected with four or six contiguous rings in order to create a net as shown in Figure 2.For the connection of the panels, shackles or wire rope shall be used. The strength of the connection formed shall be equal to or greater than the tensile strength of the ring net panel.2 ISO 2016 Al
28、l rights reservedBS ISO 17745:2016ISO 17745:2016(E)a) Four contiguous rings b) Six contiguous ringsFigure 2 Example of ring wire net panel layoutThe wire ring net panels shall comply with the specifications given in Table 1.Table 1 Properties and possible combinations of wire ring net panelsStandard
29、 ring diameterammStandard windingsbnWire diameterc,dmm7300 9 3350 12 4420 1619aOther ring diameters and wire diameters are possible, in accordance with project design requirements.bOther number of windings are possible, in accordance with project design requirements.cBy agreement, other values shoul
30、d be provided.dTolerances of metallic coated wire diameter are in accordance with class T1 in ISO 22034-2:2007, Table 1.6 Properties of wireThe wires shall comply with the diameter and tolerances as specified in Table 1, with the coating as specified in Table A.1, and with the coating weight as spec
31、ified in ISO 7989-2.Method of assessment and acceptance criteria for zinc and zinc alloy coating weight are described in ISO 7989-2:2007, Clause 5.The tensile strength of the wire used for rings shall be minimum 1 380 MPa. The tensile strength of the wire used for rings shall be tested in accordance
32、 with ISO 22034-1.6.1 Ageing and corrosion resistance6.1.1 Zn class AWhen subjected to the neutral salt spray test according to the procedures given in ISO 9227, after a period of 500 h of exposure, the ring samples shall not show more than 5 % of DBR. ISO 2016 All rights reserved 3BS ISO 17745:2016
33、ISO 17745:2016(E)6.1.2 Zn95Al5 class BWhen subjected to the neutral salt spray test according to the procedures given in ISO 9227, after a period of 500 h of exposure, the ring samples shall not show more than 5 % of DBR.6.1.3 Zn95Al5 class AWhen subjected to the neutral salt spray test according to
34、 the procedures given in ISO 9227, after a period of 1 000 h of exposure, the ring samples shall not show more than 5 % of DBR.6.1.4 Advanced metallic coatings (as Zn90Al10) class BWhen subjected to the neutral salt spray test according to the procedures given in ISO 9227, after a period of 1 000 h
35、of exposure, the ring samples shall not show more than 5 % of DBR.6.1.5 Advanced metallic coatings (as Zn90Al10) class AWhen subjected to the neutral salt spray test according to the procedures given in ISO 9227, after a period of 2 000 h of exposure, the ring samples shall not show more than 5 % of
36、 DBR.7 Wire net propertiesThe chain of three rings is mounted in a calibrated test traction rig and it is connected to the machine with two circular elements of 50 mm diameter, not less than four times the diameter of the strand.Before the test, a slight tension is given to stabilize the system, the
37、n the force is reduced again to zero before the test starts.The chain of three rings is tensioned by the test machine with a recommended displacement speed of 2 mm/s, until breaking (see Figure 2).The chain of three rings breaking load is reached when the chain is no longer able to support any incre
38、ase of the applied force. 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.Figure 3 Scheme of the test on net rings8 Wire ring net properties (longitudinal tensile test with no lateral contraction and load bearing capa
39、city test)Tensile strength and load bearing capacity tests are described in Annex B and Annex C.Tensile strength and load bearing capacity tests are indications of product performance and quality. The use of the results for design purposes shall be based on an engineering judgement in accordance wit
40、h the experience and the current practice and site conditions.9 Sampling and testingThe manufacturer is responsible for the control of product quality.4 ISO 2016 All rights reservedBS ISO 17745:2016ISO 17745:2016(E)10 Inspection and documentationIf agreed at the time of ordering, a certificate accor
41、ding to ISO 10474 shall be supplied containing the following data: product description; manufacturers name and address; quantity of products supplied; wire coating (type and class); maximum breaking load of chain of three rings; length and width of ring panels in m and number of rings; number of hou
42、rs of exposure without showing not more than 5 % of DBR.In addition, if requested, the following data shall also be supplied:a) client name;b) ring net load bearing capacity;c) ring net tensile strength. ISO 2016 All rights reserved 5BS ISO 17745:2016ISO 17745:2016(E)Annex A (informative) Possible m
43、etallic coating optionsThe wire of the ring net panel is protected with a metallic coating. Depending on the corrosivity of the environment for which the wire ring mesh is installed (see ISO 9223), possible options for metallic coating are presented in Table A.1.Table A.1 Description of the environm
44、ent of the installation site, coating wire ring requirementSite environment level (in accordance with ISO 9223:2012, Table 4)CoatingClass (ISO 79892)Estimated working life of the product (year)Low aggressive: (C2) Dry conditions Temperate zone, atmospheric environment with low pollution, e.g. rural
45、areas, small towns (over 100 m above sea level). Dry or cold zone, atmospheric environment with short time of wetness, e.g. deserts, sub-arctic areas.Zinc A 25Zn95 %/Al5 % alloyA B50 25Advanced metallic coatingA B120 50Medium aggressive: (C3) Dry conditions Temperate zone, atmospheric environment wi
46、th medium pollution or some effect of chlorides, e.g. urban areas, coastal areas with low deposition of chlorides, e.g. subtropical and tropical zone, atmosphere with low pollutionZinc A 10Zn95 %/Al5 % alloyA B25 10Advanced metallic coatingA B50 25High aggressive: (C4) Wet conditions Temperate zone,
47、 atmospheric environment with high pollution or substantial effect of chlorides, e.g. polluted urban areas, industrial areas, coastal areas, without spray of salt water, exposure to strong effect of de-icing salts, e.g. subtropical and tropical zone, atmosphere with medium pollution, industrial area
48、s, coastal areas, shelter positions at coastline.Zn95 %/Al5 % alloy A 10Advanced metallic coatingA B25 10NOTE Working life (product) the period of time during which the performance of a product will be maintained at a level that enables a properly designed and executed works to fulfil the essential
49、requirements (i.e. the essential characteristics of a product meet or exceed minimum acceptable values, without incurring major costs for repair or replacement). The working life of a product depends upon its inherent durability and normal installation and maintenance.A clear distinction has to be made between the assumed economically reasonable working life for a product (also called: design working life), which underlies the assessment of durability in Technical Specifications, and the actual working life of
