1、BS 4592-6:2008Industrial type flooring and stair treads Part 6: Glass reinforced plastics (GRP) moulded open mesh gratings and protective barriers SpecificationICS 91.060.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe B
2、SI copyright notice displayed in this document indicates when the document was last issued. BSI 2008ISBN 978 0 580 57716 1The following BSI references relate to the work on this standard:Committee reference B/208Draft for comment 07/30156441 DCPublication historyFirst published September 2008Amendme
3、nts issued since publicationAmd. no. Date Text affectedBS 4592-6:2008 BSI 2008 iBS 4592-6:2008ContentsForeword ii1 Scope 12 Normative references 13 Terms and definitions 14 Information to be supplied 35 Material requirements 36 Dimensional and manufacturing tolerances 47 Installed panels 58 Structur
4、al performance requirements 5Bibliography 7List of figuresFigure 1 Grating terms 2List of tablesTable 1 Permissible grating panel size tolerances 4Table 2 Manufacturing tolerances 4Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 7 and a back c
5、over.BS 4592-6:2008ii BSI 2008ForewordPublishing informationThis part of BS 4592 was published by BSI and came into effect on 30 September 2008. It was prepared by Subcommittee B/208/1, Stairs and walkways Industrial, under the authority of Technical Committee B/208, Stairs and walkways. A list of o
6、rganizations represented on this committee can be obtained on request to its secretary. Information about this documentBS 4592 is published in seven parts, as follows: Part 0: Common design requirements and recommendations for installation; Part 1: Metal open bar gratings Specification; Part 2: Expa
7、nded metal grating Specification; Part 3: Cold formed metal planks Specification; Part 4: Glass reinforced plastics (GRP) open bar gratings Specification; Part 5: Solid plates in metal and glass reinforced plastics (GRP) Specification; Part 6: Glass reinforced plastics (GRP) moulded open mesh gratin
8、gs Specification (this part).The requirements in this part cover areas that are not addressed by BS EN ISO 14122, Safety of machinery Permanent means of access to machinery, which is published in the following parts: Part 1: Choice of fixed means of access between two levels; Part 2: Working platfor
9、ms and walkways; Part 3: Stairways, stepladders and guard-rails; Part 4: Fixed ladders.It has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.Presenta
10、tional conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic type, and does not consti
11、tute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. BSI 2008 1BS 4592-
12、6:20081 ScopeThis part of BS 4592 specifies requirements for the design, manufacture, supply and installation of glass reinforced plastics (GRP) moulded open mesh gratings intended for industrial flooring, walkways and stair treads.It is not applicable where access to machinery is required, in which
13、 case the requirements of BS EN ISO 14122 apply.NOTE For the common requirements for industrial flooring and stair treads, see BS 4592-0.In addition to the definitive requirements, this standard also requires the items detailed in BS 4592-0:2006, Clause 4 to be documented. For compliance with this s
14、tandard, both the definitive requirements and the documented items have to be satisfied.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of
15、 the referenced document (including any amendments) applies.BS 4592-0:2006, Industrial type flooring and stair treads Part 0: Common design requirements and recommendations for installationBS 4592-1, Industrial type flooring and stair treads Part 1: Metal open bar gratings SpecificationBS EN 14020,
16、Reinforcements Specification for textile glass rovings3 Terms and definitionsFor the purposes of this part of BS 4592, the terms and definitions given in BS 4592-0, BS 4592-1 and the following apply.NOTE Definitions of some common terms are illustrated in Figure 1.3.1 General terms3.1.1 installed pa
17、nelgrating panel cut or supplied to installation size3.1.2 meshregular pattern of orthogonal ribsNOTE Typical mesh shapes are square and rectangular.3.1.3 mesh size (pitch)centre to centre spacing of the structural elements of the moulded grid3.1.4 moulded open mesh grating panel panel moulded as a
18、single unit with orthogonal mesh holes where the ribs are reinforced by continuous interlocking glass fibresBS 4592-6:20082 BSI 2008Figure 1 Grating terms812149107LIGHT_1123456A1161681511134623 BSI 2008 3BS 4592-6:20083.1.5 nosingsingle or composite section at the leading edge of a stair tread or to
19、 a grating at the head of a stair to provide additional reinforcement to the edge of the tread and/or additional slip resistance and/or a colour contrast to the main area of the tread3.1.6 solid top gratingmoulded open mesh grating panel to which a sheet of GRP has been bonded to the top surface dur
20、ing manufacture3.2 Dimensions of grating panels3.2.1 depthoverall thickness of the grating panel, including additional walking surface, if fitted3.2.2 installed widthdimension of the installed panel at right-angles to the overall span3.2.3 lengthlongest side of the grating panel, regardless of wheth
21、er it is the overall span or the installed width3.2.4 overall spandimension of the installed panel at right-angles to the primary supports3.2.5 widthshortest side of the grating panel regardless of whether it is the overall span or the installed width4 Information to be suppliedInformation shall be
22、supplied by the purchaser in accordance with BS 4592-0:2006, Clause 4.5 Material requirementsThe material shall be a composite of thermosetting resin reinforced with continuous glass fibre complying with BS EN 14020, with an equal number of layers in each direction. The top layer of reinforcement sh
23、all be not less than 4 mm below the top surface of the grating to provide maximum stiffness and prevent resin chipping from unreinforced edges. The glass content shall not exceed 40% w/w. Figure 1 Grating termsKey12345678NosingSolid plated top with raised pattern surfaceSolid plated top with gritted
24、 surfaceMini mesh gratingRectangular mesh gratingSquare mesh gratingCut-out with curved shaping and toe-plateErection clearance910111213141516Column or any other penetration requiring coverCut-out with straight shaping and toe-plateOverall spanClear span (between primary supports)Secondary supportPr
25、imary supportMoulded curb angle (with continuous grouting tang)WidthBS 4592-6:20084 BSI 2008The top surface shall incorporate a suitable slip resistant surface to meet the requirements of BS 4592-0:2006, Clause 7.NOTE 1 For additional protection, surfaces that are subject to abrasion in service, sho
26、uld have a quartz grit applied, bonded on with an epoxy resin adhesive.NOTE 2 The glass fibre might include continuous strand mat reinforcing, and only those additives (stabilizers, fillers, etc.) that are necessary to enable conformance to the requirements of this standard should be used in the res
27、in mix.NOTE 3 A post-manufacture protective surface coat can also be applied, if required, to enhance ultraviolet degradation resistance.NOTE 4 Flame retardency to meet the requirements of BS 476-7, Class 1 or Class II and toxic fume emission when subject to flame can also be kept to a minimum if sp
28、ecifically required, by adjusting the material composition appropriately during the course of manufacture.6 Dimensional and manufacturing tolerances6.1 GeneralThe maximum permissible tolerance of the finished sizes of the grating panels shall be as given in Table 1.The maximum permissible manufactur
29、ing tolerance shall be given in Table 2.Table 1 Permissible grating panel size tolerancesLocation Tolerancemm Length of grating panel +0p5Width of grating +0p5Depth of grating Up to and including 25 mm deep+1p0Over 25 mm deep +1.5p0Table 2 Manufacturing tolerancesLocation TolerancemmDifference of th
30、e length of diagonals 5 (out of squareness of grating panel)Transverse bow of panel before fastening to supports 1:100Longitudinal bow of panel before fastening to supports 1:200Bearing bar or grid spacing 5 per 1 500 length/width of panel BSI 2008 5BS 4592-6:20086.2 Moulded open mesh gratingAfter m
31、oulding, no dry glass fibres shall be visible on any surface. With the exception of the walking surface, all surfaces shall be smooth and uniform. There shall be no evidence of fibre orientation irregularities, inter-laminar voids, resin rich or resin starved areas.The grid pattern shall be consiste
32、nt over the area of the panel, subject to variants to match mesh size to moulded panel size.The tolerance of the width of the moulded ribs making up the grid shall be not more than 0.5 mm of the width declared by the manufacturer.7 Installed panelsNOTE 1 Panels can be cut to suit required length or
33、penetrations. After cutting, all cut edges shall be sealed with a suitable resin compatible with the grating resin.NOTE 2 Individual panels can be joined together by either bolting or clipping or they can be restrained, in order to prevent uneven deflection or trip hazards, by the provision of butt
34、straps or secondary supports.NOTE 3 The direction of rectangular mesh should be clearly stated on all documentation so that the long side is always in the direction of the overall span.8 Structural performance requirements8.1 GeneralWhen tested in accordance with 8.2 or 8.3, as applicable, the grati
35、ngs shall withstand the appropriate unfactored loads given in BS 4592-0:2006, Table 1. Where a cut-out is required, the remaining area of the grating shall be able to carry the same load.The positions of concentrated loads during testing shall be either those that produce the maximum stresses or, wh
36、ere deflection is the design criterion, those that produce maximum deflection.8.2 Flooring and walkwaysWhen tested in accordance with BS 4592-0:2006, Annex A, the flooring or walkway shall conform to the following requirements:a) It shall have a load safety factor, for dead and imposed loads, of not
37、 less than 4.0 when subjected to the unfactored imposed load given in BS 4592-0:2006, Table 1.b) It shall deflect elastically by not more than 1/200 times the effective span or 10 mm, whichever is the least amount, when subjected to the unfactored imposed load given in BS 4592-0:2006, Table 1.NOTE S
38、tandard structural design theory can be used for calculations at the preliminary design stage. In such calculations, it is important that the appropriate mechanical properties for each moulded grating be taken into account (see manufacturers literature). BS 4592-6:20086 BSI 20088.3 Stair treadsFor g
39、lass reinforced plastics (GRP) moulded gratings the requirements of BS 4592-0:2006, Clause 6 shall be met.NOTE See Note to 8.2.8.4 Protective barriersFor protective barriers, the requirements of BS 4592-0:2006, 5.4 shall be met.NOTE See Note to 8.2. BSI 2008 7BS 4592-6:2008BibliographyFor dated refe
40、rences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 476-7, Fire tests on building materials and structures Part 7: Method of test to determine the classification of the surface spread of flame of products
41、BS EN ISO 14122, Safety of machinery Permanent means of access to machinery Part 1: Choice of a fixed means of access between two levelsBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe an
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