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    BS 4592-4-2006 Industrial type flooring and stair treads - Glass reinforced plastics (GRP) open bar gratings - Specification《工业用地面和梯板 玻璃增强塑料(GRP)敞口条形栅栏 规范》.pdf

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    BS 4592-4-2006 Industrial type flooring and stair treads - Glass reinforced plastics (GRP) open bar gratings - Specification《工业用地面和梯板 玻璃增强塑料(GRP)敞口条形栅栏 规范》.pdf

    1、BS 4592-4:2006Industrial type flooring and stair treads Part 4: Glass reinforced plastics (GRP) open bar gratings SpecificationICS 91.060.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in

    2、this document indicates when the document was last issued. BSI 2006ISBN 0 580 48257 XThe following BSI references relate to the work on this standard:Committee reference B/208Draft for comment 06/30094366 DCPublication historyFirst published December 1992Second (present) edition December 2006Amendme

    3、nts issued since publicationAmd. no. Date Text affectedBS 4592-4:2006 BSI 2006 iBS 4592-4:2006ContentsForeword iii1 Scope 12 Normative references 13 Terms and definitions 14 Information to be supplied 45 Material requirements 46 Size requirements 47 Tolerance requirements 58 Construction requirement

    4、s 69 Performance requirements 9Bibliography 10List of figuresFigure 1 Grating terms 3Figure 2 Fixing dimensions for tread supports 7Figure 3 Examples of attachments to bearing bars 8List of tablesTable 1 Permissible tolerances 5Table 2 Manufacturing tolerances 6Summary of pagesThis document comprise

    5、s a front cover, an inside front cover, pages i to iv, pages 1 to 10, an inside back cover and a back cover.BS 4592-4:2006ii BSI 2006 This page deliberately left blank BSI 2006 iiiBS 4592-4:2006ForewordPublishing informationThis part of BS 4592 was published by BSI and came into effect on 29 Decembe

    6、r 2006. 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 organizations represented on this committee can be obtained on request to its secretary. SupersessionThis part of BS 4592, together with P

    7、art 0, supersedes BS 4592-4:1992, which is withdrawn.Information about this documentThis revision incorporates, where applicable, the requirements of BS EN ISO 14122-2 and BS EN ISO 1422-3. It also incorporates some of the requirements of BS 5395-3 that will be removed from BS 5395-3 in due course.B

    8、S 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: Expanded metal sections Specification; Part 3: Cold formed metal planks Specification; Part 4: Glass reinforced plastics (GR

    9、P) 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 gratings Specification1).The requirements in this part cover areas that are not addressed by BS EN ISO 14122, Safety of machi

    10、nery 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 platforms and walkways; Part 3: Stairways, stepladders and guard-rails; Part 4: Fixed ladders.It has been assumed in the preparation of

    11、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.1)In preparation.BS 4592-4:2006iv BSI 2006Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright)

    12、 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 constitute a normative element.Requirements in this standard are drafted in accordance with T

    13、he BSI guide to standardization Section 2: Rules for the structure, drafting and presentation of British Standards, subclause 11.3.1, which states, “Requirements should be expressed using wording such as: When tested as described in Annex A, the product shall .”. This means that only those products

    14、that are capable of passing the specified test will be deemed to conform to this standard.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

    15、cannot confer immunity from legal obligations. BSI 2006 1BS 4592-4:20061 ScopeThis part of BS 4592 specifies requirements for the design, manufacture, supply and installation of glass reinforced plastics (GRP) open bar gratings intended for use in industrial flooring, walkways and stair treads.It is

    16、 not applicable where access to machinery is required, in which case the requirements of BS EN ISO 14122 apply.NOTE For the common requirements for industrial type flooring and stair treads, see BS 4592-0.In addition to the definitive requirements, this standard also requires the items detailed in B

    17、S 4592-0:2006, Clause 4 to be documented. For compliance with this standard, 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

    18、edition cited applies. For undated references, the latest edition of 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 sta

    19、ir treads Part 1: Metal open bar gratings Specification3 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 Types of bar3.1.1 bearing barm

    20、ember that carries the load between supports 3.1.2 transverse barmember fixed at right angles to bearing bars to provide lateral restraint3.2 Dimensions of gratings3.2.1 grating lengthoverall measurement in a direction parallel to the bearing bars3.2.2 grating widthoverall measurement in a direction

    21、 at right angles to the bearing bars3.2.3 grating depthoverall depth of grating, which is usually the depth of the bearing barBS 4592-4:20062 BSI 20063.3 Pitch3.3.1 bearing bar pitchdistance centre-to-centre of bearing bars3.3.2 transverse bar pitchdistance centre-to-centre of transverse bars3.4 sol

    22、id top gratingopen mesh grating to which a GRP plate is bonded to the top surface during manufacture3.5 starting edgedistance from centre of first transverse bar to end of grating3.6 tread supporteither a shelf angle with the tread securely clipped, bolted or bonded to it or a flat plate fixed to ea

    23、ch end of the tread, with each support having holes provided for fixing the tread between stair stringers BSI 2006 3BS 4592-4:2006Figure 1 Grating terms 56341798102L11 1213161415BS 4592-4:20064 BSI 20064 Information to be suppliedFor compliance with the standard both the definitive requirements spec

    24、ified throughout this part of BS 4592 and those specified in BS 4592-0:2006, Clause 4 shall be satisfied.5 Material requirements5.1 The material used in glass reinforced plastics (GRP) open bar gratings shall be a composite of thermosetting resin mix reinforced with continuous glass fibre roving whi

    25、ch, when fabricated into a panel, meets the appropriate design criteria specified in BS 4592-0 and is fit for the relevant design load, as specified in BS 4592-0:2006, Table 1. 5.2 Surfaces of the composite shall have a thermoplastic veil. NOTE 1 For additional protection, surfaces that are subject

    26、to abrasion in service should 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

    27、 should be used in the resin mix.NOTE 3 A post-manufacture protective surface coat can also be applied, if required, to enhance ultraviolet degradation resistance.5.3 All cut ends shall be sealed with a suitable resin after cutting.6 Size requirementsThe sizes of bearing bars, binding bars and trans

    28、verse bars (subject to the tolerances permitted in the appropriate material standard), shall be such that it can be demonstrated by calculation or test, that they meet the appropriate design criteria specified in BS 4592-0 and are fit for the relevant design load, as specified in BS 4592-0:2006, Tab

    29、le 1.Figure 1 Grating terms (continued)Key1 Slip resistant strip (nosing) at top of stairs or step-off point910111213141516Make-up panel widthErection clearanceBearing bars to follow profile of cut-outToe plate bolted/pinned and bonded to bearing barTop surface of bars with slip-resistant surfaceTra

    30、nsverse barsBearing bar pitchGrating length (direction of span)2 Curved toe plate3 Transverse bar pitch4 Binding bar, only where essential5 Effective span6 Special pultruded GRP curb angle section (as alternative to galvanized mild steel)7Starting edge8 Standard panel widthNOTE A curved toe plate is

    31、 not available in pultruded GRP. Where upstand is unavoidable, multisided shaping is acceptable or moulded GRP pipe of a suitable diameter. BSI 2006 5BS 4592-4:2006The transverse bar pitch shall be determined by calculation or test such that it meets the appropriate design criteria specified in BS 4

    32、592-0 and is fit for the relevant design load, as specified in BS 4592-0:2006, Table 1.NOTE Gratings can be provided with a solid GRP plate bonded to the top surface during manufacture, in order to cover any opening in the top surface that would permit the passage of smaller objects. This would also

    33、 increase the strength of the floor and provide a more suitable surface for the passage of small solid wheeled trolleys when required.7 Tolerance requirements7.1 The maximum permissible tolerances from finished sizes of glass reinforced plastics (GRP) open bar gratings shall be as shown in Table 1.T

    34、able 1 Permissible tolerancesLocation Tolerance mmLength of grating panel or individual bearing bar +0p5Grating width +0p5Depth of bearing bar:up to and including 25 +1p0over 25 up to 50 +1.5p0Thickness of bearing bar:up to 10 0.4over 10 up to 15 0.5Binding:top of binding bar above bearing bar +4.0p

    35、0Underside of binding bar above bottom of bearing bar +0BS 4592-4:20066 BSI 20067.2 The maximum permissible manufacturing tolerances for glass reinforced plastics (GRP) open bar gratings shall be as given in Table 2.8 Construction requirements8.1 Bearing barsBearing bars shall be provided with later

    36、al restraint by means of transverse bars fixed at each point of intersection or contact with the bearing bars, either mechanically or by means of an epoxy resin adhesive. Binding bars shall be attached by bonding, or bonding and pinning.8.2 Binding barsBinding bars shall be attached to bearing bars

    37、where:a) panels have less than two transverse bars;b) the starting edge of a panel is more than 150 mm from the transverse bar.8.3 Supports for stair treads Tread supports, clipped securely to the stair treads, shall be bolted to the stair strings. NOTE 1 For typical details of fixing dimensions for

    38、 tread supports, see Figure 2.NOTE 2 For imposed loads on treads, see BS 4592-0.Table 2 Manufacturing tolerancesLocation TolerancemmDifference between the length of diagonals 5 (out of squareness of grating panel)Transverse bars in either direction from perpendicular alignment with bearing bars1:100

    39、Transverse bar spacing 5 per 1 500 length of bearing barsBearing bar lean 1:10Transverse bow of panel before fastening to supports1:100Longitudinal bow of panel before fastening to supports1:200 BSI 2006 7BS 4592-4:2006Figure 2 Fixing dimensions for tread supportsKey1 Pitch line 9 Depth of tread sup

    40、port (50 mm)234567816 mm min. overlapDepth of tread and supportGrating depth of treadRear holeFixing holes 13 mm diameter for M12 boltsWidth of treadGoing10111213Dimension from bottom of tread support to bolt centre (22 mm)Distance to first bolt centre from end of tread support (30 mm)Bolt centres (

    41、see Note 4 and Note 5)Dimension from top of tread to bolt centreNOTE 1 Dimension 13 is 53 mm when using 25 mm deep tread.NOTE 2 Dimension 13 is 66 mm when using 38 mm deep tread.NOTE 3 If the width of tread is 250 mm to 290 mm, the dimension 12 is 125 mm.NOTE 4 If the width of tread is 291 mm or mor

    42、e, the dimension 12 is 175 mm.NOTE 5 The minimum section thickness for a tread support angle is 6 mm.NOTE 6 The rear hole (5) in the support angle can be slotted.13425687910121311BS 4592-4:20068 BSI 20068.4 Toe platesWherever possible, toe plates shall be fixed to the supporting structure for glass

    43、reinforced plastics (GRP) open bar gratings. When fitted, toe plates shall be formed from channel, angle or flat sections (see Figure 3) or suitable profiles.NOTE 1 Channel sections can be used where toe plates are attached to the guard rail posts. Where this is possible, it is the preferred method,

    44、 as it does not rely on the adhesive bond to a bearing bar.NOTE 2 Angle sections are preferred to flat sections. Flat sections, however, can be used around multi-sided openings (see Figure 1) as curved toe plates of the same material as the bearing bars are generally unavailable. 8.5 Cut-outsWhere a

    45、 cut-out is required in a glass reinforced plastics (GRP) open bar grating, it shall be shaped to reduce the necessity for binding bars or toe plates.NOTE 1 Additional supports around the cut-out might be required to satisfy the design criteria.NOTE 2 The rigidity of the panel can be maintained by j

    46、oining to adjacent panels.Figure 3 Examples of attachments to bearing barsa) Flat section on panel side b) Angle section on panel end (toeing out)c) Angle section on panel end (toeing in) d) Flat section on panel ende) Channel binding bar on panel end BSI 2006 9BS 4592-4:20069 Performance requiremen

    47、ts9.1 GeneralWhen tested in accordance with 9.2 or 9.3, as applicable, glass reinforced plastics (GRP) open bar grating 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 lo

    48、ad.The positions of concentrated loads during testing shall be either those that produce the maximum stresses or, where deflection is the design criterion, those that produce maximum deflection.9.2 Flooring and walkwaysWhen tested in accordance with BS 4592-0:2006, Annex A, the flooring or walkway s

    49、hall conform to the following requirements.a) shall have a load safety factor, for dead and imposed loads of not 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 Standard structural design theory can be used for calc


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