1、BS 4592-1:2006Industrial type flooring and stair treads Part 1: Metal open bar gratings SpecificationICS 91.060.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDIncorporating Corrigendum No. 1Publishing and copyright informationThe BSI copyright notice displaye
2、d in this document indicates when the document was last issued. BSI 2009 ISBN 978 0 580 69266 6 The following BSI references relate to the work on this standard:Committee reference B/208Draft for comment 06/30094360 DCPublication historyFirst published as BS 4592 March 1970First published as BS 4592
3、-1 July 1987Second edition April 1995Third (present) edition December 2006Amendments issued since publicationAmd. no. Date Text affectedBS 4592-1:2006C. 1 31 January 2010 See 6.3 BSI 2009 iBS 4592-1:2006ContentsForeword iii1 Scope 12 Normative references 13 Terms and definitions 14 Information to be
4、 supplied 45 Material requirements 46 Size requirements 57 Tolerance requirements 58 Construction requirements 69 Performance requirements 7Bibliography 9List of figuresFigure 1 Grating terms 3 Figure 2 Fixing dimensions for tread end plates 8List of tablesTable 1 Permissible tolerances 6Table 2 Man
5、ufacturing tolerances 6Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 9 and a back cover.BS 4592-1:2006ii BSI 2009 This page deliberately left blank BSI 2009 iiiBS 4592-1:2006ForewordPublishing informationThis part of BS 4592 was published by
6、BSI and came into effect on 29 December 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. Supersessio
7、nThis part of BS 4592, together with Part 0, supersedes BS 4592-1:1995, which is withdrawn.Information about this documentThe start and finish of text introduced by Corrigendum No.1 is indicated in the text by tags PQ.This part of BS 4592 incorporates some of the requirements of BS 5395-3 that will
8、be removed from BS 5395-3 in due course.BS 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 Specificati
9、on; 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 gratings Specification1).The requirements in this part cover areas that are not addr
10、essed 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 platforms and walkways; Part 3: Stairways, stepladders and guard-rails; Part 4: Fixed ladders.I
11、t 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.1) In preparation.BS 4592-1:2006iv BSI 2009Presentational conventionsThe provisions of this stan
12、dard 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 constitute a normative element.Requirements in this
13、 standard are drafted in accordance with The 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 shal
14、l .”. This means that only those products 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 appli
15、cation.Compliance with a British Standard cannot confer immunity from legal obligations. BSI 2009 1BS 4592-1:20061 ScopeThis part of BS 4592 specifies requirements for the design, manufacture, supply and installation of metal open bar gratings intended for use in industrial flooring and stair treads
16、.It is 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 flooring and stair treads, see BS 4592-0.In addition to the definitive requirements, this standard also requires the items detailed in
17、BS 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 documents (including any amendments) applies.BS 4592-0:2006, Industrial type flooring and stair treads Part 0: Common design requirements and recommendations for installationBS 8118-2, Structural use of aluminium Pa
19、rt 2: Specification for materials, workmanship and protectionBS EN 10025, Hot rolled products of non-alloy structural steels Technical delivery conditionsBS EN 1011, Welding Recommendations for welding of metallic materialsBS EN 10258, Cold-rolled stainless steel narrow strip and cut lengths Toleran
20、ces on dimensions and shapeBS EN 12020-1, Aluminium and aluminium alloys Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 Part 1: Technical conditions for inspection and deliveryBS EN 12020-2, Aluminium and aluminium alloys Extruded precision profiles in alloys EN AW-6060 and EN AW-60
21、63 Part 2: Tolerances on dimensions and formBS EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods3 Terms and definitionsFor the purposes of this part of BS 4592, the terms and definitions given in BS 4592-0 and the following apply.NOTE Defi
22、nitions of some common terms are illustrated in Figure 1.3.1 end plateplate fixed to stair tread for attachment to a stringBS 4592-1:20062 BSI 20093.2 curb anglesupport fixed to concrete or steelwork (vertical leg up) around perimeter of flooring to provide a toe plate3.3 Types of bar3.3.1 bearing b
23、armember that carries the load between supports3.3.2 transverse barmember fixed at right angles to bearing bars to provide lateral restraint3.3.3 pressed barmember fixed diagonally between adjacent bearing bars to provide lateral restraint3.3.4 binding barmember or section fixed to the edge of a gra
24、ting, flush with the top of the bearing bar3.4 nosingmember attached to the front edge of a stair tread or to a grating at the head of a stair3.5 Dimensions of gratings3.5.1 grating lengthoverall measurement in a direction parallel to the bearing bars3.5.2 grating widthoverall measurement in a direc
25、tion at right angles to the bearing bars3.5.3 grating depthoverall depth of grating, which is usually the depth of the bearing bar3.5.4 grating starting edgedistance from centre of first transverse bar to end of grating3.6 Pitch3.6.1 bearing bar pitchdistance centre-to-centre of bearing bars3.6.2 tr
26、ansverse bar pitchdistance centre-to-centre of transverse bars3.6.3 pressed bar pitchdistance in a longitudinal direction between points of lateral restraint to adjacent bearing bars3.6.4 serration pitchdistance centre-to-centre of the repeat pattern3.7 solid top gratingopen mesh grating to which a
27、steel plate is welded to the top surface during manufacture3.8 resistance weldingmethod whereby heat is generated at the metal intersection points by an electric current and, as the forging temperature is reached, pressure is applied and the materials are forge-welded together BSI 2009 3BS 4592-1:20
28、06Figure 1 Grating terms21345671211141317161510199A21228AAA-AAA201823249BBS 4592-1:20064 BSI 20094 Information to be suppliedThe following items to be agreed between the contracting parties are specified in the clauses referred to and shall be fully documented. For compliance with the standard both
29、the definitive requirements specified throughout this part of BS 4592 and those specified in BS 4592-0:2006, Clause 4 and the following documented item shall be satisfied.a) Requirements for protection against corrosion (see 5.3).5 Material requirements5.1 SteelLow carbon steel for metal open bar gr
30、atings shall, as a minimum, conform to BS EN 10025.Stainless steel shall, as a minimum, conform to the requirements of austenitic steel specified in BS EN 10258.5.2 AluminiumAluminium for metal open bar gratings shall, as a minimum, conform to BS EN 12020-1 and BS EN 12020-2.Figure 1 Grating terms (
31、continued)Key1 Erection clearance (from inside of toe plate to face ofcolumn)12 13 14 15 16 17 18 19 20 21 22 23 24Span Pressed bar Binding bar Grating depth Bearing bar pitch Transverse bars Erection clearance Width Curb angle (with grouting tangs) Top clip Bottom clip Bolt Grating starting edge2 W
32、all or column 3 Slip resistant strip (nosing) at top of stair or step-off point and tread 4 Cut-out with straight shaping and toe plate 5 Bearing bars 6 Curb angle used on edge of concrete rebate 7 Cut-out with curved shaping and toe plate 8 Transverse bar pitch 9A Length of serration (see 6.3) 9B D
33、epth of serration (see 6.3) 10 Serration pitch 11 Grating length BSI 2009 5BS 4592-1:20065.3 Protection against corrosionMetal open bar gratings shall be free draining.NOTE 1 The requirements vary, depending on the end-use and the exposure environment. However, hot dip galvanizing is recommended for
34、 external protection of low carbon steel.NOTE 2 Guidance on the required level of protection should be sought by referring to BS EN ISO 14713.Requirements for protection against corrosion shall be agreed between the manufacturer and the purchaser.When hot dip galvanizing is applied, it shall conform
35、 to BS EN ISO 1461.6 Size requirementsNOTE Gratings can be provided with a solid steel plate welded 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 increase the strength of the floor and provide
36、 a more suitable surface for the passage of small solid wheeled trolleys when required.6.1 The thickness of bearing bars, binding bars and either flat, square or round transverse bars, or pressed bars subject to the tolerances permitted in the appropriate material standard, shall be such that it can
37、 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, Table 1.6.2 The transverse bar pitch and pressed bar pitch shall be determined by calculation or test, such that th
38、ey meet the appropriate design criteria and are fit for the purpose for which they are intended, as specified in BS 4592-0.6.3 For serrations (see Figure 1), the serration length shall be not less than 55% of their pitch (see Figure 1, 9A) and serration depth shall be not less than 2.5 mm (see Figur
39、e 1, 9B). There shall be at least five serrations per 100 mm length of grating. PMill rolled and machine cut serrations shall be provided to increase grip and interlock between the top of the floor and the appropriate industrial type footwear to provide an enhanced slip resistant floor.Q7 Tolerance
40、requirements7.1 The maximum permissible tolerances from finished sizes of gratings shall be as shown in Table 1.7.2 The maximum permissible manufacturing tolerances shall be as given in Table 2.BS 4592-1:20066 BSI 20098 Construction requirementsNOTE For imposed loads on treads, see BS 4592-0.8.1 Bea
41、ring bars shall be provided with lateral restraint by means of transverse bars or pressed bars, fixed at each point of intersection or contact with the bearing bars by means of welding (see 8.2), riveting or pressure locking.8.2 Welding of steel shall either be arc welding, in accordance with BS EN
42、1011, or resistance welding.Welding of aluminium shall be in accordance with BS 8118-2.Table 1 Permissible tolerancesLocation TolerancemmLength of grating panel or individual bearing bar +0 p5Width of grating +0 p5Depth of bearing bar: up to and including 25 +1 p0.5over 25 up to 50 +1.5 p0.75over 50
43、 up to 100 +2.0 p1.0over 100 up to 150 +2.0 p1.5Thickness of bearing bar: up to 10 0.4over 10 up to 15 0.5Binding: top of binding bar above bearing bar +4.0 p0 underside of binding bar above bottom of bearing bar +0Table 2 Manufacturing tolerancesLocation Tolerance mmDifference between the length of
44、 diagonals 5 (out of squareness of grating panel)Transverse bars in either direction from perpendicular alignment with bearing bars 1:100Transverse bar spacing 5 per 1 500 length of bearing barsBearing bar lean 1:10Transverse bow of panel before fastening to supports 1:100 Longitudinal bow of panel
45、before fastening to supports1:200 BSI 2009 7BS 4592-1:2006NOTE Binding bars can be reduced in depth to aid free draining (see 5.3) provided that it can be demonstrated if required, by calculation or test, that they are fit for the purpose for which they were intended.8.3 Where binding bars are loadb
46、earing, they shall be of equivalent strength to the bearing bars but not project below them. NOTE 1 Alternatively, binding bars can be connected by an electroforge process in a manner that can be demonstrated if required, by calculation or test, that they meet the appropriate design criteria and are
47、 fit for the purpose for which they are intended.NOTE 2 Where end plates transfer the load from stair treads through a ledge support, the amount of welding can be reduced, if this can be demonstrated by calculation or test.8.4 Where the function of binding bars excludes load transfer, they shall be
48、attached to the bearing bar by such means as that they can be demonstrated if required, by calculation or test, to be fit for the purpose for which they are intended.However, where the binding bars are subject to load transfer from bearing bars, including end plates for stair treads, the connection
49、between them shall be provided, if welded, by a fillet weld. The fillet weld shall have a leg length that is at least equivalent to the thickness of a bearing bar, throughout the depth of the connection on one side of every bearing bar.8.5 When binding bars are applied along the length of a grating, they shall be secured at every transverse bar, or at every point where they are in contact with a pressed bar.8.6 Where a cut-out is required in a grating and the gap is less than 3
