1、BSI Standards PublicationBS 5834-2:2011Incorporating Corrigendum No.1Surface boxes, guards andunderground chambers forthe purposes of utilitiesPart 2: Specification for surfaceboxesPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the documentwas
2、last issued. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 84979 4ICS 91.140.40; 91.140.60The following BSI references relate to the work on this standard:Committee reference B/504Draft for comment 08/30142158 DCPublication historyPart 2 first published
3、January 1983Part 3 first published October 1985Second (present) edition as Part 2 (combined revision of Part 2 and Part 3), July 2011Amendments issued since publicationDate Text affectedDecember 2013 C1. See foreword for detailsBS 5834-2:2011 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative r
4、eferences 13 Terms and definitions 24 Classification and grading 35 Materials 46 Frames for combination units 57 Fasteners 68 Dimensions and design of surface boxes 69 Manufacture and workmanship 1310 Coatings and corrosion protection 1411 Bedding-in, permanent set and durability requirements 1412 M
5、arking 16AnnexesAnnex A (normative) Loading tests 17Annex B (informative) Optional items to be agreed between the manufacturerand the purchaser 24Bibliography 27List of figuresFigure1Typical section and minimum dimensions for a combination unit andframe for a small surface box 5Figure2Typical sectio
6、n and minimum dimensions for combination unit andframe for a large surface box 5Figure 3 Height or depth of raised or recessed patterns 9Figure 4 Dimensions of prising slots 10Figure 5 Open keyway 11Figure 6 Closed keyway 12Figure 7 Keys 12Figure A.1 Example of a measuring device support used for me
7、asuring coverand frame movement under permanent set loads 18Figure A.2 Test load positions for large surface boxes 21Figure A.3 Cover and frame: arrangement of measurements 22Figure A.4 Cover to frame alignment relative to cover planar surface for raisedpatterns 22Figure A.5 Cover to frame alignment
8、 relative to cover planar surface forrecessed patterns 23Figure A.6 Views of cover and frame assemblies illustrating measurementpositions 24List of tablesTable 1 Surface box grades 3Table 2 Performance of thermoplastics materials 4Table 3 Designations and specified dimensions of small surface boxes
9、7Table 4 Minimum dimensions of large surface box frames 7Table 5 Prising slots 10Table 6 Keyway dimensions 10Table 7 Key dimensions 13Table A.1 Test loads for small surface boxes 19Table A.2 Test loads for large surface boxes 20Table B.1 Example of a test report 26Summary of pagesThis document compr
10、ises a front cover, an inside front cover, pages i to ii,pages 1 to 28, an inside back cover and a back cover.BRITISH STANDARD BS 5834-2:2011 The British Standards Institution 2013 iForewordPublishing informationThis part of BS 5834 is published by BSI Standards Limited, under licence fromthe Britis
11、h Standards Institution, and came into effect on 31 July 2011. It wasprepared by Technical Committee B/504, Water supply. A list of organizationsrepresented on this committee can be obtained on request to its secretary.SupersessionThis part of BS 5834 supersedes BS 5834-2:1983 and BS 5834-3:1985, wh
12、ich arewithdrawn.Relationship with other publicationsBS 5834 is published in three parts: Part 1: Specification for guards and plinths; Part 2: Specification for surface boxes; Part 4: Specification for utility chambers.Information about this documentThis standard is a revision and an amalgamation o
13、f BS 5834-2:1983 andBS 5834-3:1985. It has been extended to include surface boxes made from castiron, cast aluminium, plastics and fabricated steel and to include surface boxesdesigned for use with all types of utility.Text introduced or altered by Corrigendum No. 1 is indicated in the text by tags.
14、 Minor editorial corrections are not tagged.Product certification. Users of this British Standard are advised to consider thedesirability of third-party certification of conformity to this British Standard.Users seeking assistance in identifying appropriate conformity assessment bodiesor schemes may
15、 ask BSI to forward their enquiries to the relevant association.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informa
16、tive material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standa
17、rd cannot confer immunity from legalobligations.BRITISH STANDARDBS 5834-2:2011ii The British Standards Institution 20131 ScopeThis part of BS 5834 specifies requirements for surface boxes to be used withguards and underground chambers designed for the purposes of utilitiesincluding those intended fo
18、r factory infill having a maximum designated overallclear opening of 450 mm 450 mm. This British Standard specifies surface boxesmade from cast iron, cast aluminium, plastics and fabricated steel. The selection,use and surface finish of infill materials for factory infilled covers is outside thescop
19、e of this standard.A test method for loading tests is specified in Annex A and a summary of theoptional items to be agreed between the manufacturer and the purchaser isgiven in Annex B.NOTE 1 See Table 4 for permitted intrusions to the clear opening.NOTE 2 Requirements for covers having a larger cle
20、ar opening than450 mm x 450 mm are specified in BS EN 124. In BS EN 124, such covers are referredto as gully or manhole tops.2 Normative referencesThe following referenced documents are indispensable for the application ofthis document. For dated references, only the edition cited applies. For undat
21、edreferences, the latest edition of the referenced document (including anyamendments) applies.BS 3412:1992, Methods of specifying general purpose polyethylene materials formoulding and extrusionBS 4190, ISO metric black hexagon bolts, screws and nuts SpecificationBS 4439:1991, Specification for scre
22、wed studs for general purposes MetricseriesBS 5139, Method of specifying general purpose polypropylene and propylenecopolymer materials for moulding and extrusionBS 5834-1:2009, Surface boxes, guards and underground chambers for thepurposes of utilities Part 1: Specification for guards and plinthsBS
23、 7668, Weldable structural steels Hot finished structural hollow sections inweather resistant steels SpecificationBS EN 1561, Founding Grey cast ironsBS EN 1563, Founding Spheroidal graphite cast ironBS EN 1676, Aluminium and aluminium alloys Alloyed ingots for remelting SpecificationBS EN 1706, Alu
24、minium and aluminium alloys Castings Chemical compositionand mechanical propertiesBS EN 10025-1, Hot rolled products of structural steels Part 1: General technicaldelivery conditionsBS EN 10025-2, Hot rolled products of structural steels Part 2: Technical deliveryconditions for non-alloy structural
25、steelsBS EN 10025-3, Hot rolled products of structural steels Part 3: Technical deliveryconditions for normalized/normalized rolled weldable fine grain structural steelsBS EN 10025-4, Hot rolled products of structural steels Part 4: Technical deliveryconditions for thermomechanical rolled weldable f
26、ine grain structural steelsBS EN 10025-5, Hot rolled products of structural steels Part 5: Technical deliveryconditions for structural steels with improved atmospheric corrosion resistanceBRITISH STANDARD BS 5834-2:2011 The British Standards Institution 2013 1BS EN 10025-6, Hot rolled products of st
27、ructural steels Part 6: Technical deliveryconditions for flat products of high yield strength structural steels in thequenched and tempered conditionBS EN 10029, Specification for tolerances on dimensions, shape and mass for hotrolled steel plates 3 mm thick or aboveBS EN 10210-1, Hot finished struc
28、tural hollow sections of non-alloy and finegrain steels Part 1: Technical delivery measurementsBS EN 12390-3, Testing hardened concrete Part 3: Compressive strength of testspecimensBS EN 14598-3, Reinforced thermosetting moulding compounds Specificationfor sheet moulding compound (SMC) and bulk moul
29、ding compound (BMC) Part3: Specific requirementsBS EN ISO 527-2:1996, Plastics Determination of tensile properties Part 2: Testconditions for moulding and extrusion plasticsBS EN ISO 580:2005, Plastics piping and ducting systems Injection-mouldedthermoplastics fittings Methods for visually assessing
30、 the effects of heatingBS EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methodsBS EN ISO 2063, Thermal spraying Metallic and other inorganic coatings Zinc,aluminium and their alloysDD CEN/TS 14541:2007, Plastics pipes and fittings for non-pres
31、sure applications Utilisation of non-virgin PVC-U, PP and PE materials3 Terms and definitionsFor the purposes of this part of BS 5834 the following terms and definitionsapply.3.1 bedding loadload applied to a surface box to achieve bedding-in of the load-bearing parts3.2 clear openingaccess opening
32、in a surface box through which a horizontal disc or a horizontalrectangular plate passes unimpeded, without deviation from a vertical axis,when a surface box is placed in its normal position and with the cover fullyopenNOTE See Note A to Table 4 for permitted intrusions.3.3 combination unitcover and
33、 frame set in a concrete surround and suitable for bedding on asectional-type guard or chamberNOTE A surface box embedded in concrete post-production does not constitute acombination unit.3.4 covermoveable part of a surface box that covers the access openingNOTE The cover may comprise one or more se
34、ctions.3.5 designationcategorization of a small surface box by grade and type3.6 framepart of a surface box that receives and supports the coverBRITISH STANDARDBS 5834-2:20112 The British Standards Institution 20133.7 horizontal disctheoretical disc used to assess the clear opening of a small surfac
35、e box whenpassed through at a horizontal angle3.8 horizontal rectangular platetheoretical rectangular plate used to assess the clear opening of a large surfacebox when passed through at a horizontal angle3.9 planar surfacehorizontal plane of a surface box cover, the vertical location of which isdete
36、rmined by the percentage covered by raised or recessed pattern3.10 raised patternareas of a surface box cover raised above the cover planar surface3.11 recessed patternareas of a surface box cover recessed below the cover planar surface3.12 surface boxassembly of a frame and cover to allow access to
37、 any utility apparatus3.13 test loadload applied to a surface box cover for the determination of load-bearingcapacity4 Classification and grading4.1 ClassificationSurface boxes shall be classified as one of the following.a) Small surface box. A surface box having a clear opening of300 mmor less in d
38、iameter.b) Large surface box. A surface box having at least one specified clear openingdimension exceeding300 mm, up to a maximum overall clearopening of 450 mm 450 mm.4.2 GradingSurfaces boxes shall be graded in accordance with Table 1.Table 1 Surface box gradesGrade DescriptionGrade A(heavy)Surfac
39、e boxes suitable for use in carriageways carrying fast-moving commercial vehicleshaving wheel loadsA)up to 5 tonnes, and in accordance with 8.10.Grade BB)(medium)Surface boxes capable of bearing wheel loads up to 5 tonnes, for use in areas to whichvehicles would have only occasional access.Grade CB)
40、light)Surface boxes for use in situations not intended for use by vehicles.A)The magnitude of the stated wheel load is as exerted by a stationary vehicle.B)Grade B1 and Grade C1 boxes (see 8.1 and Table 3) are suitable for use for pipe-type guards conforming toBS 5834-1.BRITISH STANDARD BS 5834-2:2
41、011 The British Standards Institution 2013 35 Materials5.1 GeneralThe materials used for the manufacture of surface boxes or combination unitsshall conform to 5.2, 5.3, 5.4, 5.5 and 5.6, as applicable.5.2 Cast ironThe metal used for the manufacture of iron covers or frames shall be either:a) grey ca
42、st iron (flake graphite iron) conforming to BS EN 1561; orb) ductile cast iron (spheroidal graphite iron or nodular graphite iron)conforming to BS EN 1563.5.3 Cast aluminiumThe metal used for the manufacture of aluminium castings shall suit the designand dimensions of the surface box and conform to
43、the applicable grade inaccordance with either BS EN 1676 or BS EN 1706.5.4 Plastics5.4.1 ThermoplasticThermoplastic materials used shall comprise one of the following plastics,incorporated or blended with other ingredients in accordance with Table 2.a) Unplasticized poly(vinylchloride) (PVC-U).b) Po
44、lyethylene (PE), specified as Code W in accordance with BS 3412:1992,Table 2.c) Polypropylene (PP), specified as Code L in accordance with BS 5139:1991,Table 2.d) Non virgin materials in accordance with DD CEN/TS 14541:2007,3.1.2 and 3.1.5.5.4.2 ThermosetThermoset materials used shall be either:a) B
45、MC conforming to BS EN 14598-3:2005; orb) SMC conforming to BS EN 14598-3:2005.5.5 Steel for fabricationSteel for fabrication shall conform to BS 7668, BS EN 10029, BS EN 10210-1,BS EN 10025-1, BS EN 10025-2, BS EN 10025-3, BS EN 10025-4, BS EN 10025-5 orBS EN 10025-6, as applicable.5.6 Concrete sur
46、round for combination unitsThe materials used for the concrete surround shall conform toBS 5834-1:2009, 8.3.Table 2 Performance of thermoplastics materialsPerformance PE PP PVC-U Test methodTensile strength (N/mm) 16 18 42 BS EN ISO 527-2:1996Elongation at break (%) 140 200 100 BS EN ISO 527-2:1996T
47、emperature resistance (C) 150 120 150 BS EN ISO 580:2005BRITISH STANDARDBS 5834-2:20114 The British Standards Institution 20136 Frames for combination unitsFrames for combination units shall be set in the concrete surround and conformto the minimum dimensions given in Figure 1 and Figure 2.Figure 1
48、Typical section and minimum dimensions for a combination unit and frame for a smallsurface boxDimensions in millimetresKey1 Frame 4 ConcreteA)2 Cover 5 Base arrangementB)3 HingeA)The concrete shall be a minimum thickness of 38 mm for 150 mm guards or of 50 mm for 175 mm guards.B)The base arrangement
49、 shall match the type of guard specified by the purchaser. The type of guard shallconform to BS 5834-1.Figure 2 Typical section and minimum dimensions for combination unit and frame for a large surfaceboxDimensions in millimetresKeyDimension D : Grade A 75 mmGrade B 50 mmGrade C 25 mmNOTE This figure gives minimum dimensions.BRITISH STANDARD BS 5834-2:2011 The British Standards Institution 2013 57 Fasteners7.1 GeneralFasteners supplied for loosely coupling
