1、BS 4592-2:2006Industrial type flooring and stair treads Part 2: Expanded metal grating SpecificationICS 91.060.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates whe
2、n the document was last issued. BSI 2006ISBN 0 580 48255 3The following BSI references relate to the work on this standard:Committee reference B/208Draft for comment 06/30094362 DCPublication historyFirst published July 1987Second (present) edition December 2006Amendments issued since publicationAmd
3、. no. Date Text affectedBS 4592-2:2006 BSI 2006 iBS 4592-2:2006ContentsForeword iii1 Scope 12 Normative references 13 Terms and definitions 14 Information to be supplied 25 Material requirements 26 Size requirements 37 Tolerance requirements 48 Performance requirements 4AnnexesAnnex A (informative)
4、Recommendations for installation of gratings 6Bibliography 11List of figuresFigure 1 Grating panel terms 3Figure 2 Types of grating panel 4Figure 3 Fixing dimensions for tread angle end supports 5Figure A.1 Alignment of grating panels 6Figure A.2 Positioning of grating panels 7Figure A.3 Structural
5、supports 7Figure A.4 Fixing gratings using clips or hook bolts 8Figure A.5 Fixing grating panels by welding 9Figure A.6 Banding of cut edges 10Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 11 and a back cover.BS 4592-2:2006ii BSI 2006 This pa
6、ge deliberately left blank BSI 2006 iiiBS 4592-2:2006ForewordPublishing informationThis part of BS 4592 was published by 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
7、 walkways. A list of organizations represented on this committee can be obtained on request to its secretary. SupersessionThis Part of BS 4592-2, together with Part 0, supersedes BS 4592-2:1987, which is withdrawn.Information about this documentBS 4592 is published in seven parts, as follows: Part 0
8、: 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 (GRP) open bar gratings Specification; Part 5: Solid plat
9、es 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 machinery Permanent means of access to machinery, which is
10、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 this British Standard that the execution of its provis
11、ions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.Presentational 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 “sha
12、ll”.Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.1)In preparation.BS 4592-2:2006iv BSI 2006Requirements in this standard are drafted in accordance with The BSI guide to standardization Section 2: Rules for t
13、he 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 that are capable of passing the specified test will be
14、 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 cannot confer immunity from legal obligations. BSI 200
15、6 1BS 4592-2:20061 ScopeThis part of BS 4592 specifies requirements for the design, manufacture, supply and installation of expanded metal gratings intended for use in industrial flooring and stair treads. It is not applicable in cases where access to machinery is required, in which case the require
16、ments of BS EN ISO 14122 apply. NOTE 1 Annex A gives additional recommendations for installation of gratings.NOTE 2 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 459
17、2-0:2006, 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 editi
18、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 4592-0:2006, Industrial type flooring, walkways and stair treads Part 0: Common requirementsBS EN 10025 (all parts), Hot rolled products of non-alloy structural steelsBS EN 1
19、0258, Cold-rolled stainless steel narrow strip and cut lengths Tolerances on dimensions and shapeBS EN 10259, Cold-rolled stainless and heat resisting steel wide strip and plate/sheet Tolerance on dimensions and shapeBS EN 12020-1, Aluminium and aluminium alloys Extruded precision profiles in alloys
20、 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-6063 Part 2: Tolerances on dimensions and formBS EN ISO 1461, Hot dip galvanized coatings on fabricated iron and
21、 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.3.1 expanded metal gratinggrating formed by slitting and expanding blank metal plates in a single continuous processBS
22、4592-2:20062 BSI 20063.2 Grating features3.2.1 strandslit section of plate, when expanded, that forms part of the boundary to an open sectionNOTE See Figure 1 and Figure 2.3.2.2 knuckledeformed section of plate joining strandsNOTE See Figure 1 and Figure 2.3.3 long way (LW)distance between centres o
23、f knuckles along grating NOTE See Figure 1.3.4 short way (SW)distance between centres of knuckles across gratingNOTE See Figure 1.3.5 stagcut knuckleNOTE See Figure A.5 c).3.6 framed gratinggrating framed with angles, tee bars or flat bars, etc.NOTE Framing can be used to finish the edge for removab
24、le gratings and/or to connect subsidiary support members to increase the load-carrying capacity of the grating.3.7 complete meshgrating formed by cutting through the centres of the knuckles in both directions4 Information to be suppliedThe following items to be agreed between the contracting parties
25、 are specified in the clauses referred to and shall be fully documented. For compliance with the standard both 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 fo
26、r protection against corrosion (see 5.3).5 Material requirements5.1 SteelLow carbon steel used for expanded metal sections shall, as a minimum, conform to BS EN 10025.Stainless steel shall, as a minimum, conform to either BS EN 10258 or BS EN 10259, depending on the size of panel required. BSI 2006
27、3BS 4592-2:20065.2 AluminiumAluminium used for expanded metal sections shall, as a minimum, conform to BS EN 12020-1 and BS EN 12020-2.5.3 Protection against corrosionRequirements for protection against corrosion shall be agreed between the manufacturer and the purchaser. NOTE 1 The requirements var
28、y, depending on the end-use and the exposure environment. However, for external protection in particular, hot dip galvanizing is recommended.NOTE 2 Guidance on the required level of protection should be sought by referring to BS EN ISO 14713.When hot dip galvanizing is applied to expanded metal sect
29、ions, it shall conform to BS EN ISO 1461.6 Size requirementsFor unframed gratings, finished sizes shall be half, or whole, multiples of the long way. The short way shall be cut to a complete mesh.NOTE 1 For unframed gratings, matched panels are required on continuous runs, i.e. all panels are either
30、 sheared whole or half multiples of the long way.NOTE 2 For framed gratings, the long way and the short way can be cut to complete meshes or be random cut.Treads for expanded metal sections shall consist of framed gratings and shall be at least 25 mm thick.Figure 1 Grating panel termsKey1 Strand 4 S
31、hort way (SW)2 Strand width 5 Strand thickness3Knuckle 6Long way (LW)123456BS 4592-2:20064 BSI 20067 Tolerance requirementsThe maximum permissible deviations from finished sizes of framed gratings shall be as follows:a) length of panel, +0 mm to p5 mm;b) width of panel, +0 mm to p5 mm;c) difference
32、between diagonals, 5 mm (out of squareness of panel).NOTE Permissible deviations for unframed gratings are not specified, since these panels either overlap (short way) or are cut (long way) when installed on site (see Annex A).8 Performance requirements8.1 GratingsExpanded metal gratings shall confo
33、rm to the loads specified in BS 4592-0:2006, Clause 5.8.2 Stair treadsStair treads for expanded metal sections shall withstand the appropriate loads specified in BS 4592-0:2006, Clause 6.NOTE 1 Where end supports for stair treads are welded to the treads see Figure A.5. NOTE 2 Fixing dimensions for
34、tread angle end supports are shown in Figure 3.NOTE 3 For imposed loads on treads, see BS 4592-0.Figure 2 Types of grating panela) Regular knuckle grating panel b) Long knuckle grating panelc) Dimpled long knuckle grating panel BSI 2006 5BS 4592-2:2006Figure 3 Fixing dimensions for tread angle end s
35、upportsKey12345678Leading edge of stair tread fitted with anti-slip nosingPitch lineRiserGoingOverlap (= 16 mm)Tread widthOverall depth of end support (50 mm)Dimension from top of end support to centre bolts (30 mm)91011121314Dimension from leading edge of tread to centre of first bolt (30 mm)Bolt c
36、entre dimension (see Notes 1 and 2)Hole centre for dimension of slotted hole (30 mm)Dimension for slot width (14 mm for stair treads, 12 mm for ladder treads)Hole diameter for first bolt (14 mm for stair treads, 12 mm for ladder treads)Depth of suitable expanded metal tread materialNOTE 1 For tread
37、widths (6) of 250 mm to 290 mm dimension 10 is 125 mm.NOTE 2 For tread widths (6) of 291 mm or more dimension 10 is 175 mm.NOTE 3 The depth of expanded metal (14) required to suit the design criteria is to be determined by the manufacturer. 109781426411121353141BS 4592-2:20066 BSI 2006Annex A (infor
38、mative) Recommendations for installation of gratingsA.1 FixingGratings should be secured to structural steelwork by welding or by using fixing clips.Fixings for regular knuckle gratings and framed gratings should consist of clamps projecting a maximum of 4 mm, or hook bolts projecting a maximum of 6
39、 mm, above the surface of the grating. Fixing clips for other types of grating should consist of an upper saddle engaging over two knuckles of the grating, with a screw passing through the saddle and tightening into a lower clamping strip. The lower clamping strip is then notched to engage with the
40、bottom edge of a knuckle.Fixings should be spaced at regular intervals and staggered on opposite sides of the walkway.Gratings should be fixed or contained positively so that they cannot move laterally or away from their supporting members. Otherwise, the minimum extension of flooring over supports
41、should be 30 mm.A.2 Installation procedureA.2.1 Arrange adjacent gratings so that the strands slope in the same direction to ensure correct lapping (see Figure A.1).A.2.2 Place the gratings with the flat, straight edged mesh intersections uppermost (see Figure A.2).A.2.3 Place the ends of each assem
42、bly on structural supports(see Figure A.3).A.2.4 Clamp and fix with clips (see Figure A.4). Alternatively, weld gratings together, using butt welding see Figure A.5 a) or overlapping and welding see Figure A.5 b), or a support welded to the gratings beneath the joint. Then weld each fourth stag to t
43、he structural support see Figure A.5 c).A.2.5 Where it is necessary to cut holes in the grating, e.g. for pipes or structural members, weld a bar at the contact points to form an edge for the cut-out (see Figure A.6). Figure A.1 Alignment of grating panelsKey1 Slope same direction1 BSI 2006 7BS 4592
44、-2:2006Figure A.2 Positioning of grating panelsKey1 Walkway width (LW) 3 Walkway clear span2 Curved edge down 4 Overlap = 30 mmFigure A.3 Structural supports123304BS 4592-2:20068 BSI 2006Figure A.4 Fixing gratings using clips or hook boltsKey1 Walkway width (LW) 5 Regular knuckle grating2 Hook bolt
45、over joint 6 Hook bolt and clamp3 Long knuckle grating 7 Overlap = 30 mm4 Curved edge down12345630 307 7 BSI 2006 9BS 4592-2:2006Figure A.5 Fixing grating panels by weldinga) Grating panels joined by butt weld b) Grating panels joined by overlap and weldc) Welding grating panels to structural suppor
46、tsKey1 Weld each fourth stag1BS 4592-2:200610 BSI 2006Figure A.6 Banding of cut edges BSI 2006 11BS 4592-2:2006BibliographyStandards publicationsFor dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
47、ies.BS EN ISO 14122, Safety of machinery Permanent means of access to machineryBS EN ISO 14713, Protection against corrosion of iron and steel in structures Zinc and aluminium coatings GuidelinesFurther reading BS 5395-1:2000, Stairs, ladders and walkways Part 1: Code of practice for the design, con
48、struction and maintenance of straight stairs and windersBS 5950-1:2000, Structural use of steelwork in building Part 1: Code of practice for design Rolled and welded sectionsBS 5950-2:2001, Structural use of steelwork in building Part 2: Specification for materials, fabrication and erection Rolled a
49、nd welded sectionsBS 6100-1, Glossary of building and civil engineering terms Part 1: General and miscellaneousBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users
