1、BRITISH STANDARD BS1892-2.11: 1989 Gymnasium equipment Part 2: Particular requirements Section 2.11 Specification for practice and games netting and supporting trackways UDC 796.022:685.6+685.6:614.8:684.76:677.07-427.3BS1892-2.11:1989 This British Standard, having been prepared under the directiono
2、f the Textiles and Clothing Standards Policy Committee, was published underthe authority of theBoardofBSI and comes into effect on 31 August1989 BSI09-1999 The following BSI references relate to the work on this standard: Committee reference TCM/14 Draft for comment87/43066 DC ISBN 0 580 17364 X Com
3、mittees responsible for this British Standard The preparation of this British Standard was entrusted by the Textiles and Clothing Standards Policy Committee (TCM/-) to Technical Committee TCM/14, upon which the following bodies were represented: Birmingham City British Amateur Athletic Board British
4、 Amateur Weight Lifters Association British Association of Advisers and Lecturers in Physical Education British Leather Confederation British Sports and Allied Industries Federation Central Council of Physical Recreation City of Glasgow Consumer Policy Committee of BSI Department of Education and Sc
5、ience Department of the Environment (Building Research Establishment) Department of Trade and Industry (Consumer Affairs Division) English Basketball Association Home Office Institute of Trading Standards Administration Ministry of Defence Physical Education Association of Great Britain and Northern
6、 Ireland Recreation and Leisure Trade Association Sports Council The following body was also represented in the drafting of the standard, through subcommittees and panels: Institute of Leisure and Amenity Management Amendments issued since publication Amd. No. Date of issue CommentsBS1892-2.11:1989
7、BSI 09-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definition 1 3 General requirements 1 4 Netting 1 5 Screening and archery netting 2 6 Trackway(s) 2 7 Marking 2 Appendix A Recommendations covering safety aspects of archery netting 5 Appendix B Measurement
8、 of mesh size 5 Appendix C Netting trackway deflection tests 5 Figure 1 Machine selvedge 3 Figure 2 Hand selvedge 4 Figure 3 Suggested typical layout for archery and cricket bay nets (with no other concurrent activities) 6 Figure 4 Suggested typical layout for archery and cricket bay nets (with othe
9、r concurrent activities) 7 Figure 5 Mesh size measurement 8 Figure 6 Netting trackway deflection tests 9 Table 1 Classification and description of main use 1 Table 2 Tolerances for drape 1 Table 3 Physical properties for knotted netting 2 Table 4 Screening and archery netting 2 Publications referred
10、 to Inside back coverBS1892-2.11:1989 ii BSI 09-1999 Foreword This Section of BS1892 has been prepared under the direction of the Textiles and Clothing Standards Policy Committee. With the varied range of activities which necessitates the use of netting in sports halls covering archery, cricket and
11、golf, the proposed division of that hall is to allow the different activities to take place within that hall. The categorization is to provide guidance to the purchaser as to the acceptability of the netting so as to allow the participation of individuals in separate activities within that hall and
12、to provide adequate protection and economic use of the areas so divided. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer i
13、mmunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the
14、 amendment table on the inside front cover.BS1892-2.11:1989 BSI 09-1999 1 1 Scope This section of BS1892 specifies requirements for practice and games netting and supporting trackway(s) for use in gymnasia and sports halls. Recommendations covering the safety aspects of archery netting are given in
15、Appendix A. NOTEThe titles of publications referred to in this BritishStandard are listed on the inside back cover. 2 Definition For the purposes of this Section of BS1892 the following definition applies. drag the amount of netting which lies on the floor subsequent to the fixing of the netting uni
16、t to the overhead tracking 3 General requirements Practice and games netting and supporting trackways shall comply with the requirements of BS1892-1, except insofar as they are modified by this Section. 4 Netting 4.1 Classification Netting shall be classified by the sport/activity areas that it is t
17、o be generally used in conjunction with. These shall be distinguished as shown in Table 1. Table 1 Classification and description ofmain use NOTE 1It is intended that netting of an alternative classification (see Table 1) may be used in any given situation. Netting should be specified to the highest
18、 end-use classification for that sport/activity. NOTE 2When looking at the alternative uses for any of these categories of netting, advice should be sought from the supplier. 4.2 Materials The cord shall consist of3-ply, continuous filament polyamide S or Z twist. 4.3 Construction 4.3.1 General. All
19、 knotted netting shall be machine-made single knot construction. Bulk netting shall be cut into square mesh pieces. When separate pieces of netting require to be joined, this shall be done by hand using cord similar in construction to that used for the manufacture of the netting selvedge (see4.3.2).
20、 NOTEThis hand rigging operation is called “shutting”, and may be used where very large areas of netting are required necessitating the joining of several pieces of netting, e.g.cricket practice bays. In this latter case, single, double or multi-bays are generally fully enclosed except for the bowle
21、rs end. In these circumstances the wings, roofs and back nets are cut individually and joined together. 4.3.2 Selvedge 4.3.2.1 Machine selvedge. A continuous cord of minimum diameter3mm, shall be attached to the periphery of the net by machine stitching with polyamide or polyethylene thread (see Fig
22、ure 1). 4.3.2.2 Hand selvedge. The netting edges shall have a selvedge consisting of two twines hand knotted at every mesh knot (see Figure 2) using cord as specified in4.3.2.1. 4.3.3 Drape NOTEAs the retractable netting suspended on tracking or strained wire systems has a natural tendency to drape
23、or produce a curtain effect, allowances for this factor should be built in at the ordering stage or at the manufacturing stage. Otherwise, the draped netting will not cover the intended hall space. Netting shall be subject to the tolerances specified in Table 2, as appropriate, for drape (fullness i
24、n length). Table 2 Tolerances for drape 4.3.4 Drag. All netting shall be subject to a minimum tolerance of150mm and a maximum tolerance of600mm for drag. NOTEFor particular sports the appropriate governing body may lay down requirements for allowed drag and consequently they should be consulted in t
25、his respect. No drag, or too little drag, will allow a ball to pass underneath the netting and therefore from area to area. Too much drag may look unsightly, be easily subject to damage, and potentially dangerous if a person gets tangled up in it. 4.4 Physical properties Netting shall comply with Ta
26、ble 3, as appropriate, when tested in accordance with the methods specified therein. Classification Description of main use AR/N a Archery AT/N Athletics throwing: single layer for discus double layer for hammer BT/N Badminton, table tennis GB/N Golf, badminton, table tennis JC/N General purpose div
27、iding netting for large ball games, e.g.tennis, cricket where the junior ball may be used SC/N General purpose dividing netting for large ball games, e.g.senior cricket SQ/N Squash a See clause5. Netting Min. tolerance (in length) AT/N, JC/N, SC/N BT/N, GB/N, SQ/N % +15 +20BS1892-2.11:1989 2 BSI 09-
28、1999 5 Screening and archery netting Screening and archery netting shall comply with Table 4, as appropriate, when tested in accordance with the methods specified therein. 6 Trackway(s) NOTEIt is not intended that this Section of BS1892 should limit the individuality of choice of materials and the m
29、ethods to be employed in the installation of trackway(s). 6.1 Brackets and braces All nuts and bolts used in the installation of fixing brackets shall be corrosion resistant when tested in accordance with BS1706. NOTEBecause of the varying roof structures to which trackway (s) have to be fitted, it
30、is not practical to specify the design of brackets and braces. The brackets should be of sufficient strength to withstand any stresses which the track to which they are attached is designed to withstand. Where storage bags or envelopes are used, these and their attachments should be of sufficient st
31、rength to withstand a test load of70kg together with the total mass of the netting to be used. 6.2 Supported mass The trackway, in addition to supporting its own mass, shall be capable of being submitted to the test loads as described in Appendix C, without exhibiting a vertical deflection (D 1 ) of
32、 more than1% and a horizontal deflection (D 2 ) of more than0.5% of the distance(S) between the fixing points. 6.3 Runners The distance between runners shall be a maximum of500mm and a minimum of300mm measured with the net fully extended. NOTEEach runner and its attachment should be capable of suppo
33、rting a minimum load of10kg. 7 Marking Installations complying with this Section of BS1892 shall be marked with the following information: a) the number and date of this British Standard, i.e.BS1892-2.11:1989 1) ; b) the manufacturers name or trade mark. Table 3 Physical properties for knotted netti
34、ng Table 4 Screening and archery netting 1) Marking BS1892-2.11:1989 on or in relation to a product represents a manufacturers declaration of conformity, i.e.a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is therefore so
35、lely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable. Property Test procedure AT/N BT/N GB/N JC/N SC/N SQ/N Runnage (in m/kg) BS6125 410 20 1470 70 1000 50 740 40 740 40 1000 50 Turn
36、s per metre BS2085 120 5 190 5 150 5 140 5 140 5 150 5 Minimum breaking strength (in N) BS5053 1 250 360 490 690 690 490 Mesh size knot to knot (in mm) Appendix B a 44 19 19 45 50 25 a Tolerances are 5mm on100mm stretched full diamond mesh. Property Test procedure 100% cotton screening Lightweight p
37、olyamide screening Heavyweight polyamide screening AR/N Minimum mass/unit area (in g/m 2 ) BS2471 290 190 390 275 Minimum width (in mm) BS1930 2000 1650 1450 3000 Threads per centimetre warp weft BS2862 30 12 21 15 25 17 Minimum breaking strength (in N) warp weft BS2576 790 560 2800 2000 4800 4800 1
38、400 1280BS1892-2.11:1989 BSI 09-1999 3 Figure 1 Machine selvedgeBS1892-2.11:1989 4 BSI 09-1999 Figure 2 Hand selvedgeBS1892-2.11:1989 BSI 09-1999 5 Appendix A Recommendations covering safety aspects of archery netting Archery is an activity ideally suited to a specialist projectile hall. In the abse
39、nce of such a provision, the safety factor is of the utmost importance. With a two court hall which constitutes an open play area of approximately36m 34m, the archery projectile bays should be designed in such a way that there would be no danger to persons taking active part in other sporting activi
40、ties in adjacent areas of that hall, plus total protection to viewing areas and entry and access points. It is also important that neither the access nor entry points should be at the target end. If no other activity is to run concurrently with the archery, and providing there are no viewing areas t
41、o the side or target ends of the area, then other mesh netting may be used in conjunction with archery mesh netting in accordance with the layout shown in Figure 3, i.e.6m along each wing net 3m high, back nets3m or3.5m wide 4m high, which can also serve as the sight screens for cricket. If there ar
42、e other activities in the play area which are proposed to run concurrently with the archery, then adequate safety features have to be built in. With reference to Figure 4, which depicts a one-and-a-half to two hall layout showing proposed projectile bays where individuals are involved in any other s
43、porting activity, the dividing net between these two areas has to provide the necessary safety aspect, and to provide this, it is recommended that a minimum of3m, from finished floor level throughout its length, of archery mesh should be incorporated with the other mesh netting for the remainder of
44、its height. As mentioned in connection with Figure 3, viewing to projectile bays and entry and access points should have full safety protection. In general, archery netting is effective and safe to use in almost all situations for beginners, intermediate and advanced standard archers. Provided that
45、the netting is loosely hung and tied, and not stretched taut, then arrows are effectively stopped by the impact absorbing powers of the heavy and fine mesh net. However, there are occasions when arrows may be shot through this netting if very fine arrows are shot from the most powerful of Olympic-st
46、yle target competition equipment or arrows from hunting power compound bows. Care should be taken when using these extremes of penetrative power. A second net layer behind the first with a gap of about0.5m to1m will usually make an effective barrier in these cases. Appendix B Measurement of mesh siz
47、e Pull the net taut and using a1m length rule, determine the average number of full meshes over the1m distance. NOTEAlthough mesh size is described as knot to knot, it is determined over an average number of full meshes for a measurement of1m. For example,50mm knot to knot equates to100mm stretched
48、full diamond mesh and should produce approximately10 full meshes per metre. Similarly25mm knot to knot equates to50mm stretched full diamond mesh and should produce approximately20 full meshes per metre (seeFigure 5). Appendix C Netting trackway deflection tests C.1 Apply a load of70kg together with
49、 the mass of netting when gathered up at the mid-point between fixing points. Note the vertical deflection at the central point in millimetres see Figure 6(a). C.2 Apply a load of10kg to one edge of the trackway at the mid-point between fixing points. Note the horizontal deflection at the central point in millimetres see Figure 6(b). BS1892-2.11:1989 6 BSI 09-1999 Figure 3 Suggested typical layout for archery and cricket bay nets (with no otherconcurrentactivities)BS1892-2.11:1989 BSI 09-1999 7 Figure 4 Su
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