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1、BRITISH STANDARD BS EN 12811-1:2003 Temporary works equipment Part 1: Scaffolds Performance requirements and general design The European Standard EN 12811-1:2003 has the status of a British Standard ICS 91.220 ? BS EN 12811-1:2003 This British Standard was published under the authority of the Standa
2、rds Policy and Strategy Committee on 16 June 2004 BSI 16 June 2004 ISBN 0 580 43279 3 National foreword This British Standard is the official English language version of EN 12811-1:2003. It supersedes BS 5973:1993 which is withdrawn. The UK participation in its preparation was entrusted by Technical
3、 Committee B/514, Access and support equipment, to Subcommittee B/514/21, Access and working scaffolds, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. It is anticipated that CEN will issue a corrigendum to correc
4、t the following items: a) in the key of Figure 5, line 3, “see Table 4” will read as “see Table 3”; b) in Equation 10 the value “2,4MB,d” will read as “2,0MB,d”; c) in Table C.1 the bending moment MB,k in kNm for class B, the value “2,4” will read as “1,4”; d) in the title of Figure C.2, “and C” wil
5、l be deleted. EN 12811-1:2003 is published with three national annexes. National annex NA gives general guidance on the use of this standard. National annex NB gives detailed information on the differences between this standard and BS 5973 (withdrawn). National annex NC discusses the aspects of stru
6、ctural design by limit state covered by this standard, but not considered in BS 5973 (withdrawn). Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Sta
7、ndards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standa
8、rd does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European
9、 developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 56, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendm
10、ents issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12811-1 December 2003 ICS 91.220 English version Temporary works equipment - Part 1: Scaffolds - Performance requirements and general design Equipements temporaires de chantiers - Partie 1: Echaf
11、audages - Exigences de performance et tude, en gnral Temporre Konstruktionen fr Bauwerke - Teil 1: Arbeitsgerste - Leistungsanforderungen, Entwurf, Konstruktion und Bemessung This European Standard was approved by CEN on 4 September 2003. CEN members are bound to comply with the CEN/CENELEC Internal
12、 Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. Thi
13、s European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the
14、national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN
15、DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12811-1:2003 E EN 12811-1:2003 (E) 2 Contents Page Introduction.4 1Scope 5 2
16、Normative references 5 3Terms and definitions6 4Materials10 5General requirements11 6Requirements for structural design.17 7Product manual26 8Instruction manual.26 9Work on site27 10Structural design .27 Annex A (informative) Wind loads on clad working scaffolds.35 Annex B (normative) Base jacks; da
17、ta for calculation37 Annex C (normative) Characteristic values of the resistances for couplers.41 Annex D (Informative) National A-deviations .44 Bibliography45 National annex NA (informative) Summary of major points 46 National annex NB (informative) Requirements unique to this standard or covered
18、in less detail in BS 5973 (withdrawn) .48 National annex NC (informative) Aspects of structural design covered by this standard but not by BS 5973. 54 National bibliography.56 EN 12811-1:2003 (E) 3 Foreword This document (EN 12811-1:2003) has been prepared by Technical Committee CEN/TC 53 “Temporary
19、 works equipment”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2004, and conflicting national standards shall be withdrawn at the latest by June 2
20、004. This European Standard is one of the package of standards listed below: - EN 12810-1, Faade scaffolds made of prefabricated components - Part 1: Product specifications - EN 12810-2, Faade scaffolds made of prefabricated components- Part 2: Particular methods of structural design - EN 12811-1, T
21、emporary works equipment Part 1: Scaffolds Performance requirements and general design - prEN 12811-2, Temporary works equipment. Part 2: Information on materials - EN 12811-3, Temporary works equipment Part 3: Load testing Annexes A and D are informative. Annexes B and C are normative. This documen
22、t includes a bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
23、Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. EN 12811-1:2003 (E) 4 Introduction The purpose of a working scaffold is to provide a safe place of work with safe access suitable for the work being done. This European Standard sets out pe
24、rformance requirements for working scaffolds. These are substantially independent of the materials of which the scaffold is made. The standard is intended to be used as the basis for enquiry and design. As a number of options are given to suit different applications, a choice has to be made between
25、the various alternatives within this European Standard. All other requirements could be in an associated job specification. Based on these requirements, a set of rules can be drawn up for a particular type of equipment. These may be standard for general use, or specially prepared for a particular jo
26、b. This European Standard includes rules for structural design, which are of particular relevance to scaffolds made of certain materials. For materials this standard refers only to valid EN standards. However a large stock of equipment made of materials conforming to standards no longer valid is in
27、use. This standard does not cover the use of this equipment. Because the dimensions of the working scaffold depend on the type of work and the method of execution, the corresponding national legal rules should be taken into account. EN 12811-1:2003 (E) 5 1 Scope This European Standard specifies perf
28、ormance requirements and methods of structural and general design for access and working scaffolds, referred to from hereon as working scaffolds. Requirements given are for scaffold structures, which rely on the adjacent structures for stability. In general these requirements also apply to other typ
29、es of working scaffolds. Normal requirements are set down, but there is also provision for special cases. This European Standard also specifies structural design rules when certain materials are used and general rules for prefabricated equipment. The standard excludes: - platforms suspended by ropes
30、, whether fixed or movable; - horizontally movable platforms including Mobile Access Towers (MAT); - power-operated platforms; - scaffolds used as protection for roof work; - temporary roofs. NOTE 1 Most working scaffolds are formed from prefabricated components or from tubes and couplers. Some exam
31、ples of working scaffolds are faade scaffolds, static towers and birdcage scaffolds, but details are not given for all of these. NOTE 2 Falsework and shoring may be made of the structural components described in this standard, but are not working scaffolds. NOTE 3Particular requirements for faade sc
32、affolds made of prefabricated components are specified in EN 12810 -1 and EN 12810-2. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publi
33、cations are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to apply (including amen
34、dments). EN 74: 1988, Couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes Requirements and test procedures. prEN 74-1, Couplers, spigots and baseplates for use in falsework and scaffolds Part 1: Couplers for tubes Requirements and test methods. EN 3
35、38, Structural timber Strength classes. EN 12810-1:2003, Faade scaffolds made of prefabricated elements Part 1: Product specifications. EN 12810-2, Faade scaffolds made of prefabricated elements Part 2: Methods of particular design and assessment. prEN 12811-2: Temporary works equipment Part 2:Infor
36、mation on materials. EN 12811-3: Temporary works equipment Part 3:Load testing. prEN 12812:1997, Falsework - Performance requirements and general design. ENV 1990, Eurocode 1: Basis of structural design. EN 12811-1:2003 (E) 6 ENV 1991-2-4, Eurocode 1: Basis of design and actions on structures Part 2
37、-4: Wind actions. ENV 1993-1-1:1992, Eurocode 3: Design of steel structures Part 1-1: General rules and rules for buildings. ENV 1995-1-1, Eurocode 5: Design of timber structures Part 1-1: General rules and rules for buildings. ENV 1999-1-1:1998, Eurocode 9: Design of aluminium structures Part 1-1:
38、Common rules. 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply (see also Figure 1): 3.1 anchorage means inserted in, or attached to, the structure for attaching a tie member NOTEThe effect of an anchorage may be achieved by the tie being c
39、onnected to a part of the structure primarily intended for other purposes, see 3.23. 3.2 base jack base plate, which has a means of vertical adjustment 3.3 base plate plate used for spreading the load in a standard over a greater area 3.4 birdcage scaffold scaffold structure comprising a grid of sta
40、ndards and a decked area usually intended for working or storage 3.5 bracing in horizontal plane assembly of components which provides shear stiffness in the horizontal planes, e.g. by decking components, frames, framed panels, diagonal braces and rigid connections between transoms and ledgers or ot
41、her items used for horizontal bracing 3.6 bracing in vertical plane assembly of components which provides shear stiffness in the vertical planes, e.g. by closed frames with or without corner bracing, open frames, ladder frames with access openings, rigid or semi-rigid connections between horizontals
42、 and the vertical components, diagonal bracing, or other items used for vertical bracing 3.7 cladding material normally intended to provide weather and dust protection, typically sheeting or netting 3.8 coupler device used to connect two tubes 3.9 design conception and calculation to produce a schem
43、e for erection EN 12811-1:2003 (E) 7 3.10 ledger horizontal member normally in the direction of the larger dimension of the working scaffold 3.11 modular system system in which transoms and standards are separate components where the standards provide facilities at predetermined (modular) intervals
44、for the connection for other scaffold components 3.12 netting pervious cladding material 3.13 node theoretical point where two or more members are connected together 3.14 parallel coupler coupler used for connecting two parallel tubes 3.15 platform one or more platform units in one level within a ba
45、y 3.16 platform unit unit (prefabricated or otherwise) that supports a load on its own and which forms the platform or part of the platform and may form a structural part of the working scaffold 3.17 right angle coupler coupler used for connecting two tubes crossing at a right angle 3.18 sheeting im
46、pervious cladding material 3.19 side protection set of components forming a barrier to protect people from the risk of falling and to retain materials 3.20 sleeve coupler coupler used for joining two tubes located co-axially 3.21 standard upright member 3.22 swivel coupler coupler used for connectin
47、g two tubes crossing at any angle 3.23 tie member component of the scaffold, which connects it with an anchorage at the structure EN 12811-1:2003 (E) 8 3.24 transom horizontal member normally in the direction of the smaller dimensions of the working scaffold 3.25 working area sum of the platforms in
48、 one level, to provide an elevated safe place for people to work on and to give access to their work. 3.26 working scaffold temporary construction, which is required to provide a safe place of work for the erection, maintenance, repair or demolition of buildings and other structures and for the nece
49、ssary access EN 12811-1:2003 (E) 9 Key hsScaffold height bsScaffold bay width, centre to centre of standards lsScaffold bay length, centre to centre of standards hlScaffold lift height 1Bracing in vertical plane (transverse diagonal) (3.6) 2Bracing in horizontal plane (3.5) 3Side protection (3.19) 4Bracket brace (-) 5Node (3.13) 6Bracing in vertical plane (longitudinal diagonal) (3.6) 7Standard (3.21) 8Transom (3.24) 9Ledger (3.10) 10 Coupler(3.8) 11Tie member
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