1、BSI Standards PublicationBS EN 16508:2015Temporary works equipment Encapsulation constructions Performance requirements andgeneral designBS EN 16508:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16508:2015.The UK participation in its preparation was entru
2、sted to TechnicalCommittee B/514, Access and support equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. Th
3、e British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 80767 1ICS 91.120.01; 91.200Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee
4、 on 31 December 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 16508:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16508 December 2015 ICS 91.120.01; 91.200 English Version Temporary works equipment - Encapsulation constructions - Performance requirem
5、ents and general design quipements temporaires de chantiers - Systmes de protection douvrage - Exigences de performance et conception gnrale Temporre Konstruktionen fr Bauwerke - Einhausungskonstruktionen - Leistungsanforderungen, Entwurf, Konstruktion und Bemessung This European Standard was approv
6、ed by CEN on 26 September 2015. CEN members are bound to comply with the CEN/CENELEC Internal 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 nationa
7、l standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This 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
8、 and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hu
9、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CE
10、NELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16508:2015 EBS EN 16508:2015EN 16508:2015 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normativ
11、e references 5 3 Terms and definitions . 5 4 Materials . 8 5 General requirements . 9 5.1 General 9 5.2 Access 9 5.3 Openings . 9 5.4 Moveable structures 9 6 Classification of snow/minimum load classes 9 7 Structural design . 9 7.1 General 9 7.2 Support 10 7.3 Method of design 10 7.4 Actions 10 7.4.
12、1 General . 10 7.4.2 Permanent actions, Q110 7.4.3 Variable imposed actions, Q2 Q411 7.4.4 Climatic loads 11 7.5 Load combinations 12 7.6 Extent of static calculation 13 7.6.1 Ultimate limit state 13 7.6.2 Static equilibrium 14 7.6.3 Local sliding . 15 7.6.4 Loads on flexible sheeting . 16 8 Documen
13、tation 16 Annex A (informative) Pressure coefficients for the external pressure, cpe17 Annex B (informative) A-deviations . 20 Bibliography . 21 BS EN 16508:2015EN 16508:2015 (E) 3 European foreword This document (EN 16508:2015) has been prepared by Technical Committee CEN/TC 53 “Temporary works equ
14、ipment”, 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 2016, and conflicting national standards shall be withdrawn at the latest by June 2016. Atten
15、tion is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
16、the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
17、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16508:2015EN 16508:2015 (E) 4 Introduction The purpose of a temporary roof and encapsulation construction according to this standard is to protect the area inside from clim
18、atic influences and dust. It is also used to protect the public from effects from inside. This European Standard includes rules for structural design, which are of particular relevance to encapsulations. Individual countries may have national laws or regulations which are not in line with this Europ
19、ean standard. Information on that can be found in the attached A-deviations. BS EN 16508:2015EN 16508:2015 (E) 5 1 Scope This European Standard specifies performance requirements and design methods for temporary roofs and encapsulations. It is possible to form the constructions in several ways: temp
20、orary roof which is supported by an existing permanent construction (Figure 1); temporary roof which is supported by a scaffold (Figure 2 and 3); temporary roof which is supported by another temporary construction (e.g. steel frame); temporary wall which is supported by a separate construction (Figu
21、re 4); encapsulation which is a complete temporary construction including roof, walls and corresponding temporary supports (Figure 5). This European Standard sets out general requirements. These are substantially independent of the materials of which the construction is made. This standard is intend
22、ed to be used as the basis for enquiry and design. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edit
23、ion of the referenced document (including any amendments) applies. EN 1990 (all parts), Eurocode: Basis of structural design EN 1991 (all parts), Eurocode 1: Actions on structures EN 1993 (all parts), Eurocode 3: Design of steel structures EN 1995 (all parts), Eurocode 5: Design of timber structures
24、 EN 1999 (all parts), Eurocode 9: Design of aluminium structures EN 12811-1:2003, Temporary works equipment Part 1: Scaffolds Performance requirements and general design EN 12811-2, Temporary works equipment Part 2: Information on materials EN 12812:2008, Falsework Performance requirements and gener
25、al design 3 Terms and definitions For the purposes of this document the terms of EN 12811-1 and EN 12812 and the following apply. 3.1 temporary roof construction intended to cover work activities BS EN 16508:2015EN 16508:2015 (E) 6 3.2 temporary encapsulation construction intended to encapsulate wor
26、k activity areas, consisting of a combination of following elements: roof, walls and supports Note 1 to entry: For different types, see Figures 1 to 5. Figure 1 Example of a temporary roof which is supported by an existing permanent construction Figure 2 Examples of temporary roofs supported by scaf
27、folding elements Figure 3 Examples of temporary roofs supported by working scaffold BS EN 16508:2015EN 16508:2015 (E) 7 Key 1 existing support Figure 4 Example of a temporary wall supported by a separate construction BS EN 16508:2015EN 16508:2015 (E) 8 Figure 5 Example of an encapsulation consisting
28、 of a complete temporary construction including roof, walls and supports 3.3 kentledge material attached to or placed on a structure to provide stability by the action of its dead weight 3.4 support structure which is to withstand the imposed effects from the construction 3.5 sheeting/cladding flexi
29、ble or stiff component, normally intended to provide protection from climatic influences and/or dust protection 4 Materials Materials shall fulfil the requirements given in European Standards, where design data are provided. If European Standards do not exist, ISO Standards may be applied. This Euro
30、pean standard is not intended to prevent the use of existing components made of materials in accordance with standards that were valid at the time of their introduction. Materials shall be sufficiently robust and durable to withstand normal working conditions. Materials shall be free from any impuri
31、ties and defects, which may affect their satisfactory use. Additional requirements for some materials are given in EN 12811-2. This European standard does not intend to prevent the use of non-standardized materials. When materials are used, whose properties in relation to the intended application (e
32、.g. temperature, ageing, UV-degradation) are not given in any available standard, an adequate assessment according to relevant national regulations is required. If walking on the sheeting is permitted by the supplier of the encapsulation, then it shall be able to withstand the appropriate actions. B
33、S EN 16508:2015EN 16508:2015 (E) 9 NOTE Material requirements for some sheeting are given in EN 13782. 5 General requirements 5.1 General The components shall be designed so they can be safely erected, used, maintained and dismantled. Attention shall be paid to ergonomic considerations. 5.2 Access S
34、afe and ergonomic means of access to all areas within the encapsulation and to the temporary roof shall be provided when appropriate. The access should preferably be by means of stairways. Access shall be according to the requirements of EN 12811-1. NOTE Access to the temporary roof could be require
35、d for repair, opening or snow clearance. 5.3 Openings If necessary, for the purpose of lifting in equipment or materials, it should be possible to remove parts of the structure temporarily. These parts shall be secured when removed. 5.4 Moveable structures Moveable structures shall be secured agains
36、t uplift at all times. If such securing is not possible, a maximum wind speed for loosening and moving shall be stated. 6 Classification of snow/minimum load classes Encapsulations are classified in snow load classes according to Table 1. Exceptions to the snow load classes may be decided by nationa
37、l regulations. Table 1 Snow load classes Snow load class Guidance Load kN/m2SL 1 No snow load (Minimum load) 0,1 SL 2a Based upon snow clearance management a0,25 SL 2b Based upon snow clearance management a0,6 SL 3 Site specific snow load in accordance with EN 19911-3 NOTE See also national annexes.
38、 aSnow clearance management may be achieved by physical removal, heating, etc. 7 Structural design 7.1 General Each encapsulation, including all its parts, shall be designed, constructed and maintained to ensure that it does not collapse or move unintentionally and so that it can be used safely. Thi
39、s applies at all stages, including erection, modification and until fully dismantled. The designer shall have access to all relevant design data from the supplier of prefabricated equipment. BS EN 16508:2015EN 16508:2015 (E) 10 The forces determined for the loading capacity and stability proof for t
40、emporary roofs and encapsulations shall be taken into consideration in regard to the external supporting structure. 7.2 Support An encapsulation shall have support capable of resisting the design loads and limiting movement. 7.3 Method of design The structure shall be designed in accordance with rec
41、ognized engineering principles. The design shall take into account the variability of materials, workmanship, site conditions and construction tolerances. The structure shall be designed with regard to ease and safety of erection and dismantling. The designers shall provide guidance on the implement
42、ation of their design. If not specified otherwise, the design should be carried out following the ultimate limit state (ULS), including load bearing capacity, stability against sliding laterally, overturning and uplift. Design shall be carried out in accordance with the European Standards for struct
43、ural engineering, including their respective national Annexes. The current standards include: For design: EN 1990 For actions: EN 1991 For steel: EN 1993 For timber: EN 1995 For aluminium: EN 1999 If there are conflicts between provisions in this standard and other standards, e.g. ENs, then the prov
44、isions in this standard shall have precedence. The encapsulation shall be designed by taking the effects of the complete structure into account. The design of a scaffold as support of a temporary roof shall be carried out in accordance with EN 12811-1 considering the safety factors defined in 7.6 wi
45、th taking into account the additional effects from the temporary roof, see Figure 3. 7.4 Actions 7.4.1 General Typical actions on encapsulations are described in the following sub-clauses. The values Q1to Q8are characteristic values of actions. Where appropriate for a specific project, account shall
46、 be taken of other loading conditions with load combination according to EN 1990. NOTE Loads from specific projects may come from lifting equipment, lighting etc. 7.4.2 Permanent actions, Q1The permanent action “self-weight” shall be taken into account. Self-weight includes: the encapsulation struct
47、ure; kentledge; other dead loads (e.g. suspended working platforms, lifting beams, lighting etc.). BS EN 16508:2015EN 16508:2015 (E) 11 7.4.3 Variable imposed actions, Q2 Q47.4.3.1 General The designer shall consider which combinations of the variable loads are favourable or unfavourable for the str
48、ucture. 7.4.3.2 Access and service load, Q2All access and service loadings on scaffolding elements shall be taken from EN 12811-1. 7.4.3.3 Other imposed loads, Q3Other imposed loads include effects of lifting operations etc. 7.4.3.4 Service load on the roof, Q4Two concentrated loads of 1,0 kN, each
49、at a distance of 2,0 m from each other, in the most unfavourable position, shall be taken into account for each individual component. Each load area shall be 200 mm 200 mm. Q4shall not be applied in combination with other loads, however self-load of the component shall be taken into consideration. This load may be neglected if it is forbidden for any persons to be on the temporary roof in the method statement. 7.4.4 Climatic loads 7.4.4.1 General Snow load shape coefficient for Q5shall be taken from EN 1991-1-3. Wind pressure coeffic
