1、BSI Standards PublicationBS EN 771-5:2011Specification for masonry unitsPart 5: Manufactured stone masonry unitsBS EN 771-5:2011+A1:2015BS EN 771-5:2011+A1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 771-5:2011+A1:2015. It supersedes BS EN 771-5:2011, w
2、hich is withdrawn.EN 771-5:2011+A1:2015 is a “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M116, Masonry and related products, given under the EU Construction Products Regulation (Regulation (EU) No 305/2011).EN 771-5 was the subject
3、of transitional arrangements agreed under the Commission mandate. In the UK, the corresponding national standard was: BS 6457:1984, Reconstructed stone masonry units;which was withdrawn in 2007.BS 1217:1997, Specification for cast stone, contained product specification content that overlapped with t
4、he scope of EN 771-5. As a result, BS 1217:1997 was revised to remove this material and published as a new edition (BS 1217:2008).The UK participation in its preparation was entrusted by Technical Committee B/519, Masonry and associated testing, to Subcommittee B/519/1, Masonry units.A list of organ
5、izations represented on this subcommittee can be obtained on request to its secretary.EN 771-5 specifies the characteristics and performance requirements for manufactured stone masonry units available throughout the CEN member countries. It aims to do so in product performance terms, avoiding as far
6、 as possible prescriptive requirements but permitting all the traditional designations of manufactured stone units available throughout Europe. The concept of the declared value has been introduced. This is the value for the various properties referred to in this standard that the manufacturer claim
7、s for the product. There are other notable differences to which the national annex will refer, in particular the supporting test methods are different and in respect of compressive strength, manufactured stone masonry units are designated either Category I or Category II.The UK National Annex NA to
8、this standard provides an informative commentary on the differences between EN 771-5 and BS 6457. Nothing in this annex should be construed as specifying requirements other than those contained in the normative parts of this European Standard.Masonry units conforming to this standard need to be CE m
9、arked in accordance with the procedures in Annex ZA. The significance of the CE marking is that the product manufacturer claims compliance with the “harmonized” requirements given in the normative text of the product standard. These relate to the essential requirements of the EU Construction Product
10、s Regulation. Not all product characteristics need necessarily be given on the CE marking, but those product characteristics covered by regulations in force in each EU Member State, where the manufacturer intends that the product will be used, do need to be stated.This standard has been written as a
11、 performance standard unlike BS 6457 which was a combination of performance and recipe leading to the following changes. This standard covers two-part units (units with different facing and backing concretes) that are excluded from BS 6457. BS 1217 covers BS EN 771-5:2011+A1:2015BRITISH STANDARDthe
12、materials for units having any coordinating dimension exceeding 650mm (excluding the thickness of any profile or non-planar face). The order in which the dimensions of units are specified has been changed from “length, height and thickness” to “length, width (previously called thickness) and height”
13、. Tolerance categories on the manufacturers declared dimensions are specified. The manufacturer is required to declare the gross dry density of a unit and when appropriate the net dry density of the concretes in two-part units. The tolerance on these declared values is given. The manufacturer is req
14、uired to declare the normalized compressive strength of the units and separate minimum values have been put in for facing and backing mixes in two-part units. The limit on drying shrinkage has been removed and replaced by a requirement for manufacturers to declare the moisture movement value when un
15、its are marketed for structural purposes. When relevant the manufacturer has to declare the thermal properties, freeze/thaw durability, water absorption by capillarity and water vapour permeability of units. The manufacturer has to declare the reaction to fire class of a unit, and when intended to b
16、e used in structural masonry, its bond strength. A requirement for flexural bond strength of masonry units in combination with mortar has been included and is applicable only when required by national provisions valid in the intended place of use and relevant to the application. A requirement, where
17、 national provisions exist, for a declaration on release and/or content of dangerous substances. A requirement for the manufacturer to establish product conformity with its declared properties is included in this standard. This requires both product type determination and the operation of continuing
18、 factory production control procedures that have to be fully documented. An outline for these requirements is given in clause 8. An informative annex, Annex ZA, is included which indicates those clauses which form the “harmonized” standard and the procedures to be followed in order to CE mark a prod
19、uct.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 79492 6ICS 91.100.30Compliance with a British Standard cannot
20、confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2011.Amendments/corrigenda issued since publicationDate Text affected31 March 2016 Implementation of CEN amendment 1:2015. National Foreword and
21、 National Annex NA also updatedThis page deliberately left blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 771-5:2011+A1 August 2015 ICS 91.100.30 Supersedes EN 771-5:2011English Version Specification for masonry units - Part 5: Manufactured stone masonry units Spcifications pour lments de
22、 maonnerie - Partie 5: Elments de maonnerie en pierre reconstitue Festlegungen fr Mauersteine - Teil 5: Betonwerksteine This European Standard was approved by CEN on 17 March 2011 and includes Amendment 1 approved by CEN on 11 January 2015. CEN members are bound to comply with the CEN/CENELEC Intern
23、al 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 CEN-CENELEC Management Centre or to any C
24、EN 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 and notified to the CEN-CENELEC Management Centre has the same status as the official vers
25、ions. 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
26、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-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitat
27、ion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 771-5:2011+A1:2015 EEN 771-5:2011+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Materials .8 5 Requirements for manufactured stone masonry unit
28、s 8 5.1 General 8 5.2 Dimensions and tolerances 8 5.2.1 Dimensions .8 5.2.2 Dimensional tolerances 9 5.3 Configuration and appearance 10 5.3.1 General . 10 5.3.2 Configuration 10 5.3.3 Surface appearance 10 5.3.4 Flatness of surfaces . 10 5.4 Density . 11 5.5 Compressive strength 11 5.5.1 Declared v
29、alue . 11 5.5.2 Minimum value 12 5.6 Thermal properties . 12 5.7 Durability . 12 5.8 Water absorption by capillarity . 12 5.8.1 Declared value . 12 5.8.2 Maximum value . 13 5.9 Moisture movement 13 5.10 Water vapour permeability . 13 5.11 Reaction to fire 13 5.12 Shear bond strength . 13 5.12.1 Gene
30、ral . 13 5.12.2 Declaration based on fixed values 13 5.12.3 Declaration based on tests 13 5.13 Flexural bond strength . 14 5.14 Dangerous substances 14 6 Description, designation and classification of manufactured stone masonry units . 14 6.1 Description and designation . 14 6.2 Classification . 15
31、7 Marking 15 8 !Assessment and verification of constancy of performance (AVCP)“ 15 8.1 General . 15 8.2 !Product type determination“ 15 8.3 Factory production control 17 8.3.1 General . 17 8.3.2 Testing and measuring equipment . 17 8.3.3 Production equipment 17 8.3.4 Raw materials 17 8.3.5 Productio
32、n process 17 EN 771-5:2011+A1:2015 (E) 3 8.3.6 Finished product testing . 17 8.3.7 Statistical techniques 18 8.3.8 Marking and stock control of products . 18 8.3.9 Traceability . 18 8.4 Nonconforming products . 18 Annex A (normative) !Sampling for determination of product type and for independent te
33、sting of consignments“ 19 A.1 General . 19 A.2 Sampling procedure 19 A.2.1 General . 19 A.2.2 Random sampling . 19 A.2.3 Representative sampling 19 A.2.4 Dividing the sample . 20 A.2.5 Number of units required for testing . 20 Annex B (normative) Normalised compressive strength . 21 Annex C (informa
34、tive) Guidance for test frequencies for designing a FPC system to demonstrate conformity of finished products with the requirements of the standard and the declaration of the manufacturer 22 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Pr
35、oducts Regulation“ 24 ZA.1 Scope and relevant characteristics . 24 ZA.2 Procedure(s) for AVCP of manufactured stone masonry units 25 ZA.2.1 System(s) of AVCP 25 ZA.2.2 Declaration of performance (DoP) . 27 ZA.3 CE marking and labelling 32 Bibliography 35 BS EN 771-5:2011+A1:2015EN 771-5:2011+A1:2015
36、 (E)EN 771-5:2011+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Materials .8 5 Requirements for manufactured stone masonry units 8 5.1 General 8 5.2 Dimensions and tolerances 8 5.2.1 Dimensions .8 5.2.2 Dimensional tolerances 9 5.3 C
37、onfiguration and appearance 10 5.3.1 General . 10 5.3.2 Configuration 10 5.3.3 Surface appearance 10 5.3.4 Flatness of surfaces . 10 5.4 Density . 11 5.5 Compressive strength 11 5.5.1 Declared value . 11 5.5.2 Minimum value 12 5.6 Thermal properties . 12 5.7 Durability . 12 5.8 Water absorption by c
38、apillarity . 12 5.8.1 Declared value . 12 5.8.2 Maximum value . 13 5.9 Moisture movement 13 5.10 Water vapour permeability . 13 5.11 Reaction to fire 13 5.12 Shear bond strength . 13 5.12.1 General . 13 5.12.2 Declaration based on fixed values 13 5.12.3 Declaration based on tests 13 5.13 Flexural bo
39、nd strength . 14 5.14 Dangerous substances 14 6 Description, designation and classification of manufactured stone masonry units . 14 6.1 Description and designation . 14 6.2 Classification . 15 7 Marking 15 8 !Assessment and verification of constancy of performance (AVCP)“ 15 8.1 General . 15 8.2 !P
40、roduct type determination“ 15 8.3 Factory production control 17 8.3.1 General . 17 8.3.2 Testing and measuring equipment . 17 8.3.3 Production equipment 17 8.3.4 Raw materials 17 8.3.5 Production process 17 EN 771-5:2011+A1:2015 (E) 3 8.3.6 Finished product testing . 17 8.3.7 Statistical techniques
41、18 8.3.8 Marking and stock control of products . 18 8.3.9 Traceability . 18 8.4 Nonconforming products . 18 Annex A (normative) !Sampling for determination of product type and for independent testing of consignments“ 19 A.1 General . 19 A.2 Sampling procedure 19 A.2.1 General . 19 A.2.2 Random sampl
42、ing . 19 A.2.3 Representative sampling 19 A.2.4 Dividing the sample . 20 A.2.5 Number of units required for testing . 20 Annex B (normative) Normalised compressive strength . 21 Annex C (informative) Guidance for test frequencies for designing a FPC system to demonstrate conformity of finished produ
43、cts with the requirements of the standard and the declaration of the manufacturer 22 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation“ 24 ZA.1 Scope and relevant characteristics . 24 ZA.2 Procedure(s) for AVCP of manufactu
44、red stone masonry units 25 ZA.2.1 System(s) of AVCP 25 ZA.2.2 Declaration of performance (DoP) . 27 ZA.3 CE marking and labelling 32 Bibliography 35 BS EN 771-5:2011+A1:2015EN 771-5:2011+A1:2015 (E)EN 771-5:2011+A1:2015 (E) 4 European foreword This document (EN 771-5:2011+A1:2015) has been prepared
45、by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. 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 February 2016, and conflicting national standards shall be wit
46、hdrawn at the latest by May 2017. Attention 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. This document supersedes !EN 771-5:2011“. This docum
47、ent includes Amendment 1 approved by CEN on 2015-01-11. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. !This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports b
48、asic requirements for construction works of the EU Construction Products Regulation (Regulation (EU) No 305/2011). For relationship with EU Regulation/Directive(s), see informative Annex ZA, which is an integral part of this document.“ This European Standard also takes into account the general rules
49、 for unreinforced and reinforced masonry in Eurocode 6. EN 771, Specification for masonry units consists of: Part 1: Clay masonry units Part 2: Calcium silicate masonry units Part 3: Aggregate concrete masonry units (Dense and light weight aggregates) Part 4: Autoclaved aerated concrete masonry units Part 5: Manufactured stone masonry units Part 6: Natural stone masonry units According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi
