1、BRITISH STANDARD BS EN 1004:2004 Mobile access and working towers made of prefabricated elements Materials, dimensions, design loads, safety and performance requirements The European Standard EN 1004:2004 has the status of a British Standard ICS 91.220 BS EN 1004:2004 This British Standard was publi
2、shed under the authority of the Standards Policy and Strategy Committee on 31 March 2005 BSI 31 March 2005 ISBN 0 580 45755 9 National foreword This British Standard is the official English language version of EN 1004:2004. It supersedes BS 1139-3:1994 which is withdrawn. The UK participation in its
3、 preparation was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/24, Access towers, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standard
4、s which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This pu
5、blication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internat
6、ional/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN titl
7、e page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1004 December 2004 ICS 91.220 Supersedes HD 1004:19
8、92 English version Mobile access and working towers made of prefabricated elements - Materials, dimensions, design loads, safety and performance requirements chafaudages roulants de service en lments prfabriqus - Matriaux, dimensions, charges de calcul et exigences de scurit Fahrbare Arbeitsbhnen au
9、s vorgefertigten Bauteilen - Werkstoffe, Mae, Lastannahmen und sicherheitstechnische Anforderungen This European Standard was approved by CEN on 12 November 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar
10、d 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, Ge
11、rman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, D
12、enmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION E
13、UROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1004:2004: EEN 1004:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 T
14、erms and definitions .5 4 Classification7 5 Designation 7 6 Materials .7 7 General requirements8 8 Requirements for structural design.15 9 Instruction manual.18 10 Marking .19 11 Structural design .19 12 Tests26 13 Assessment26 Annex A (normative) Stiffness test on complete tower structure 27 Annex
15、B (informative) National A-deviations .30 Bibliography 31 EN 1004:2004 (E) 3 Foreword This document (EN 1004:2004) has been prepared by Technical Committee CEN/TC 53 “Temporary works equipment”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national s
16、tandard, either by publication of an identical text or by endorsement, at the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. This document supersedes HD 1004:1992. The development of mobile access and working towers system is from two roots: sc
17、affold manufacturers placed prefabricated unanchored scaffolds on four legs and castors and ladder manufacturers began to construct mobile access towers with light-weight ladders using aluminium frames and castors. Taking this into account, CEN/TC53 decided in 1980 to standardize the manufacture of
18、mobile access and working towers in parallel with the European standardization of prefabricated service and working scaffolds EN 12810-2 and EN 12811-3. For materials, this document refers only to valid documents. However, a large stock of equipment made of materials conforming to documents no longe
19、r valid is in use. This document does not cover this equipment. During discussion of the draft it was noted that the average height of people is increasing and that consideration will have to be given in later editions to altering vertical dimensions. According to the CEN/CENELEC Internal Regulation
20、s, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
21、 Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1004:2004 (E) 4 1 Scope This document applies to the design of mobile access and working towers made of prefabricated elements with a height from 2,5 m to 12,0 m (indoors) and from 2,5 m to 8,0 m (outdoors). Thi
22、s document: gives guidelines for the choice of the main dimensions and stabilizing methods; gives safety and performance requirements; and gives some information on complete towers. NOTE In this document “indoors“ means that the towers is not be exposed to wind, and “outdoors“ means that the towers
23、may be exposed to wind. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN
24、 74, Couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes Requirements and test procedures EN 1298, Mobile access and working towers Rules and guidelines for the preparation of an instruction manual EN 1991-2-4, Eurocode 1: Basis of design and action
25、s on structures- Part 2-4: Actions on structures - Wind actions EN 1993-1-1:2005, Eurocode 3: Design of steel structures Part 1-1: General rules and rules for buildings EN 1995-1-1, Eurocode 5 : Design of timber structures Part 1-1 : General rules and rules for building EN 1999-1-1, Eurocode 9: Desi
26、gn of aluminium structures Part 1-1: General rules - General rules and rules for buildings EN 12810-2, Faade scaffolds made of prefabricated components Part 2: Particular methods of structural design EN 12811-2, Temporary works equipment Part 2: Information on materials. EN 12811-3, Temporary works
27、equipment Part 3: Load testing EN 1004:2004 (E) 5 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 mobile access and working towers scaffold structures which: are capable of being used free-standing; have one or more working platforms; are ass
28、embled using prefabricated components; have the dimensions fixed by the design; have normally four legs with at least four castors; are stable, by supports on the ground and if necessary by support to a vertical construction by wall strut 3.2 height (H) distance from the ground to the upper surface
29、of the top platform 3.3 castor wheel swivelling wheel secured to the base of a member to enable the tower to be moved 3.4 adjustable leg incorporated into the structure only for plumbing a tower when situated on uneven or sloping ground. An adjustable leg may be fitted with either a castor wheel or
30、a base plate 3.5 platform component unit of platform that supports a load on its own 3.6 bracing member means used to stiffen the structure 3.7 outrigger component that increases the effective base dimensions of a tower, with provision for the attachment of a castor 3.8 stabilizer component that inc
31、reases the effective base dimensions of a tower, without provisions for the attachment of a castor 3.9 ballast weights placed at the base of the tower to increase its resistance to overturning EN 1004:2004 (E) 6 3.10 wall strut means for providing compressive restraint to prevent a tower overturning
32、. It is normally a horizontal tubular member, one end of which is coupled to the tower, while the other end rests against a wall or other structure 3.11 stairway means of access intended for persons carrying tools or materials 3.12 stairladder means of access intended for persons not carrying tools
33、or materials 3.13 inclined ladder means of access intended for persons not carrying tools or materials with an inclination from 60 to 75 3.14 vertical ladder means of access intended for persons not carrying tools or materials with an inclination of 90 3.15 platform one or more platform components f
34、orming a working area 3.16 length (L) greater of the two plane dimensions at the platform level (see Figure 1) 3.17 width (W) lesser of the two plane dimensions at the platform level (see Figure 1) Figure 1 Width (W) and length (L) EN 1004:2004 (E) 7 4 Classification 4.1 Load classes The classes of
35、uniformly distributed load are given in Table 1. Table 1 Classes of uniformly distributed load Load class Uniformly distributed load q kN/m 22 1,50 3 2,00 4.2 Access classes Four options for access to the platform are described in 7.6. 5 Designation The following data are required for the designatio
36、n of all prefabricated mobile access and working towers: a) class of uniformly distributed load (see 4.1); b) maximum height outdoors/indoors; c) access classes (see 4.2). EXAMPLE T o w e r E N 1 0 0 4 2 8/12 A B X X class 2 maximum height outdoors 8 m indoors 12 m access through stairway and stairl
37、adder 6 Materials Materials shall fulfil the requirements given in documents where design data are provided. Information for the most commonly used materials are given in EN 12811-2. Steel shall be protected by one of the methods given in EN 12811-2, Clause 8 or zinc coated with an average thickness
38、 of 15 m. EN 1004:2004 (E) 8 7 General requirements 7.1 General The following subclauses specify the minimum requirements for the mobile access and working tower including platforms. It shall be possible to fix platforms for erection and dismantling purposes with vertical distances between platforms
39、 not exceeding 2,10 m 7.2 Dimensions The minimum width, W, of the platform shall be 0,60 m and the minimum length, L, shall be 1,00 m. The minimum clear height between platforms “H” shall be in accordance with Table 2. Table 2 Clear height classes Clear height class Minimum clear height H in m H 1 1
40、,85 H 2 1,90 7.3 Apertures within platforms The aperture shall be as small as practicable, and it shall have a minimum clear opening of: 0,40 m wide x 0,60 m long Apertures in platforms shall not exceed 25 mm in width. This does not apply to apertures like hand holes in hatches. Access to a working
41、platform through an aperture in a platform shall be provided with means to prevent falling through. EN 1004:2004 (E) 9 7.4 Side protection 7.4.1 General For allowable dimensions see Figure 2. Dimensions in millimetres unless otherwise stated Figure 2 Side protection dimensions Side protection compon
42、ents shall be incapable of removal except by direct intentional action. It shall be possible to erect protection at platform edges comprising: a) at least one principal guardrail and intermediate side protection; b) toe-board; 7.4.2 Principal guardrail The principal guardrail shall be fixed so that
43、its top surface is 1 m or more above the adjacent level of the working area everywhere (minimum height 950 mm). 1)1) See A-deviation. EN 1004:2004 (E) 10 7.4.3 Intermediate side protection Intermediate side protection shall be fixed between the principal guardrail and the toe-board. Intermediate sid
44、e protection may consist of: one or more intermediate guardrails, or a frame, or a frame of which the principal guardrail forms the top edge, or a fencing structure. Openings in the side protection shall be so dimensioned so that a sphere with a diameter of 470 mm will not pass through them. 7.4.4 T
45、oe-board It shall be possible to fix a solid toe-board such that its top edge is at least 150 mm above the adjacent platform level. 7.5 Castor wheels 7.5.1 General Castor wheels shall be fixed to the tower in such a way that they cannot be accidentally detached. 7.5.2 Brakes All castors shall have w
46、heel brakes. They shall have swivel brakes unless by their design they are not eccentric when locked. The brake mechanism shall be designed in such a way that it can only be unlocked by a deliberate action. The brake mechanism shall effectively prevent any rotation of the wheel when a horizontal for
47、ce of 0,30 kN is applied through the vertical swivel axis of the castor as close as possible above the castor housing and in the rolling direction of the castor. The full value of the specified service load per castor wheel is to be applied when testing the castor brakes. A minimum of five control t
48、ests shall be carried out. EN 1004:2004 (E) 11 7.5.3 Test loads The vertical service load per wheel given by the manufacturer of the MAT (Mobile Access Tower) shall be verified by a minimum of 5 tests. The test load shall be three times the service load per castor wheel derived from the most unfavou
49、rable load combination from Table 4. When the brakes are locked, an initial vertical load of 0,50 kN shall be applied. The plate of the fork shall be taken as the origin for measurements of vertical displacement d cand the residual deformation d r . The load shall be increased to the maximum test load, maintained for one minute and the vertical deformation d cshall be measured. The load shall be returned to 0,50 kN. After 30 min the residu
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