SIST EN 771-1:2011+A1:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Festlegungen für Mauersteine - Teil 1: MauerziegelSpécification pour éléments de maçonnerie - Partie 1: Briques de terre cuiteSpecification for masonry units - Part 1: Clay masonry units91.100.25Gradbeni izdelki iz terakoteTerracotta building productsICS:Ta slovenski standard je istoveten z:EN 771-1:2011+A1:2015SIST EN 771-1:2011+A1:2015en,fr,de01-oktober-2015SIST EN 771-1:2011+A1:2015SLOVENSKI
STANDARDSIST EN 771-1:20111DGRPHãþD



SIST EN 771-1:2011+A1:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 771-1:2011+A1
August 2015 ICS 91.100.25 Supersedes EN 771-1:2011English Version
Specification for masonry units - Part 1: Clay masonry units
Spécification pour éléments de maçonnerie - Partie 1: Briques de terre cuite
Festlegungen für Mauersteine - Teil 1: Mauerziegel This European Standard was approved by CEN on 3 March 2011 and includes Amendment 1 approved by CEN on 11 January 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 national 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 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, Hungary, 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
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC 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 771-1:2011+A1:2015 ESIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .6 4 Materials and manufacture .9 5 Requirements for clay masonry units . 10 5.1 General . 10 5.2 !P units: intended to be used in protected masonry" . 10 5.2.1 Dimensions and tolerances (!P" units) . 10 5.2.2 Configuration (!P" units) . 13 5.2.3 Density (!P" units) . 14 5.2.4 Compressive strength (!P" units) . 15 5.2.5 Thermal properties (!P" units) . 16 5.2.6 Durability (!P" units) . 16 5.2.7 Water absorption (!P" units) . 16 5.2.8 Active soluble salts content (!P" units) . 16 5.2.9 Moisture movement (!P" units) . 16 5.2.10 Reaction to fire (!P" units) . 17 5.2.11 Water vapour permeability (!P" units) . 17 5.2.12 Bond strength (!P" units) . 17 5.2.13 Dangerous substances . 17 5.3 !U units: intended to be used in unprotected masonry" . 18 5.3.1 Dimensions and tolerances (!U" units). 18 5.3.2 Configuration (!U" units) . 19 5.3.3 Density (!U" units) . 20 5.3.4 Compressive strength (!U" units) . 21 5.3.5 Thermal properties (!U" units) . 22 5.3.6 Durability (!U" units) . 22 5.3.7 Water absorption (!U" units) . 22 5.3.8 Initial rate of water absorption (!U" units) . 23 5.3.9 Active soluble salts content (!U" units) . 23 5.3.10 Moisture movement (!U" units) . 23 5.3.11 Reaction to fire (!U" units) . 23 5.3.12 Water vapour permeability (!U" units) . 23 5.3.13 Bond strength (!U" units) . 24 5.3.14 Dangerous substances . 24 6 !Description, designation, designation code and classification of clay masonry units" . 24 6.1 Description and designation . 24 6.1.1 !P units" . 24 6.1.2 !U units" . 25 6.2 Designation code . 26 6.3 Classification . 30 7 Marking . 30 8 !Assessment and verification of constancy of performance (AVCP)" . 30 8.1 General . 30 8.2 !Product type determination" . 30 8.3 Factory production control . 31 SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 3 8.3.1 General . 31 8.3.2 Testing and measuring equipment . 32 8.3.3 Production equipment . 32 8.3.4 Raw materials . 32 8.3.5 Production process . 32 8.3.6 Finished product testing . 32 8.3.7 Statistical techniques . 33 8.3.8 Marking and stock control of products . 33 8.3.9 Traceability . 33 8.3.10 Nonconforming products . 33 Annex A (normative)
!Sampling for product type determination tests and for independent testing of consignments" . 34 A.1 General . 34 A.2 Sampling procedure . 34 A.2.1 General . 34 A.2.2 Random sampling . 34 A.2.3 Representative sampling . 34 A.2.4 Dividing the sample . 35 A.2.5 Number of units required for testing . 36 Annex B (informative)
Additional information . 38 B.1 Use of clay masonry units . 38 B.2 Durability . 39 B.3 Freeze/thaw resistance . 39 B.3.1 General . 39 B.3.2 Masonry subjected to severe exposure . 39 B.3.3 Masonry subjected to moderate exposure . 40 B.3.4 Masonry subjected to passive exposure . 40 B.4 Sulfate action on mortars and plasters . 40 B.5 Efflorescence and staining . 41 B.6 General guidance on the appearance of facing clay masonry units . 41 Annex C (informative)
Guidelines 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 . 42 Annex ZA (informative)
!Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation" . 44 ZA.1 Scope and relevant characteristics . 44 ZA.2 Procedure for AVCP of clay masonry units . 47 ZA.2.1 System(s) of AVCP . 47 ZA.2.2 Declaration of performance (DoP) . 48 ZA.3 CE marking and labelling. 54 Bibliography . 57
SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 4 European foreword This document (EN 771-1:2011+A1:2015) has been prepared 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 withdrawn 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 771-1:2011". This document 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 basic 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 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, 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 5 1 Scope !This European Standard specifies the characteristics and performance requirements for masonry units manufactured from clay for which the main intended uses are protected or unprotected masonry structure (see definitions 3.3 and 3.4) (e.g. facing and rendered masonry, loadbearing or non-loadbearing masonry structures, including internal linings and partitions, for building and civil engineering)." !deleted text" This European Standard includes those clay masonry units of an overall non-rectangular parallelepiped shape. It defines the performance related to e.g. dimensional tolerances, strength, density measured according to the corresponding test methods contained in separate European Standards. !It provides for the assessment and verification of constancy of performance (AVCP) of the product to this European Standard." The marking requirement for products covered by this European Standard is included. This European Standard does not specify standard sizes for clay masonry units, nor does it specify standard work dimensions, angles and radii of specially shaped clay masonry units. !This European Standard does not include method of measurement of angles and radii characteristics of specially shaped clay masonry units." This European Standard does not cover requirements for the following: units for paving, flue liners and storey height clay masonry units and clay masonry units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to be exposed to fire. It does, however, include clay masonry units for external chimney masonry. 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 772-1, Methods of test for masonry units
Part 1: Determination of compressive strength EN 772-3, Methods of test for masonry units
Part 3: Determination of net volume and percentage of voids of clay masonry units by hydrostatic weighing EN 772-5, Methods of test for masonry units
Part 5: Determination of the active soluble salts content of clay masonry units EN 772-7, Methods of test for masonry units
Part 7: Determination of water absorption of clay masonry damp proof course units by boiling in water EN 772-9, Methods of test for masonry units
Part 9: Determination of volume and percentage of voids and net volume of clay and calcium silicate masonry units by sand filling EN 772-11, Methods of test for masonry units
Part 11: Determination of water absorption of aggregate concrete, autoclaved aerated concrete, manufactured stone and natural stone masonry units due to capillary action and the initial rate of water absorption of clay masonry units EN 772-13, Methods of test for masonry units
Part 13: Determination of net and gross dry density of masonry units (except for natural stone) SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 6 EN 772-16, Methods of test for masonry units
Part 16: Determination of dimensions EN 772-19, Methods of test for masonry units
Part 19: Determination of moisture expansion of large horizontally perforated clay masonry units EN 772-20, Methods of test for masonry units
Part 20: Determination of flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units EN 772-21, Methods of test for masonry units
Part 21: Determination of water absorption of clay and calcium silicate masonry units by cold water absorption EN 1052-3, Methods of test for masonry
Part 3: Determination of initial shear strength EN 1745, Masonry and masonry products
Methods for determining thermal properties EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN ISO 12572, Hygrothermal performance of building materials and products
Determination of water vapour transmission properties (ISO 12572:2001) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE Annex B to this European Standard is informative and gives descriptions of such matters as applications, exposure and durability. 3.1 masonry unit preformed component intended for use in masonry construction 3.2 clay masonry unit masonry unit made from clay or other argillaceous materials with or without sand, fuel or other additives fired at a sufficiently high temperature to achieve a ceramic bond 3.3 protected masonry !masonry which is protected against water penetration and is not in contact with soil and ground water Note 1 to entry: It can either be masonry in external walls which is protected, (e.g. by a layer of suitable render or by cladding), or it can be the inner leaf of a cavity wall or it can be an internal wall. It may or may not be loadbearing." ! 3.4 unprotected masonry masonry which may be exposed to rain, freeze/thaw and/or may be in contact with soil and ground water without a suitable protection Note 1 to entry: It can either be masonry in external walls which is fully unprotected, or which is intended to be provided by a limited protection (e.g. by a thin layer of render). It may or may not be loadbearing." 3.5 !P unit clay masonry unit for use in protected masonry" SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 7 3.6 !U unit clay masonry unit for use in unprotected masonry" 3.7 co-ordinating size size of the co-ordinating space allocated to a masonry unit including allowances for joints and tolerances 3.8 work size size of a masonry unit specified for its manufacture, to which the actual size conforms within permissible deviations 3.9 actual size size of a masonry unit as measured 3.10 regular-shaped masonry unit masonry unit with an overall rectangular parallelepiped shape 3.11 specially shaped masonry unit masonry unit which is not a rectangular parallelepiped 3.12 accessory unit masonry unit which is shaped to provide a particular function, e.g. to complete the geometry of the masonry 3.13 interlocking features shaped matched projections and indentations on masonry units EXAMPLE Tongue and groove systems. 3.14 vertical perforation formed void that passes completely through a masonry unit perpendicular to the bed face 3.15 horizontal perforation formed void that passes completely through a masonry unit parallel to the bed face 3.16 cell formed void that does not pass through a masonry unit 3.17 frog depression formed in one or both bed faces of a unit 3.18 recess depression or indentation in one or more surfaces of a masonry unit EXAMPLE Mortar pocket, rendering keyway, grip hole. SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 8 3.19 grip hole hole in a masonry unit to enable it to be more readily grasped and lifted by hands or machine 3.20 shell peripheral material between a perforation and the surface of a masonry unit 3.21 web solid material between the perforations in a masonry unit 3.22 declared value value that a manufacturer is confident in achieving, bearing in mind the precision of test and the variability of the manufacturing process 3.23 mean compressive strength of masonry units arithmetic mean of the compressive strengths of masonry units 3.24 normalized compressive strength compressive strength of masonry units converted to the air dry compressive strength of an equivalent 100 mm wide × 100 mm high masonry unit NOTE See the procedure given in EN 772-1. 3.25 damp proof course unit clay masonry unit which, when laid in two courses with broken bond in a strong cementitious mortar, will resist rising damp in masonry 3.26 high precision clay masonry unit clay masonry unit with small dimensional tolerance especially in unit height 3.27 vertically perforated or hollow clay masonry unit clay masonry unit with one or more formed voids that pass completely through a masonry unit perpendicular to the bed face 3.28 horizontally perforated or hollow clay masonry unit clay masonry unit with one or more formed voids that pass completely through a masonry unit parallel to the bed face 3.29 clay masonry unit for concrete or mortar infill clay masonry unit with special perforation suitable for concrete or mortar infill 3.30 clay masonry unit for masonry panels clay masonry unit suitable for production of reinforced masonry or masonry storey height panels with vertical channels for mortar or concrete infill SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 9 3.31 clay masonry subject to severe exposure masonry or elements of masonry which, under end use conditions, are subjected to saturation with water (driving rain, ground water) combined with frequent freeze/thaw-cycling, due to climatic conditions and absence of protective features 3.32 clay masonry subject to moderate exposure masonry or elements of masonry which, under end use conditions, are exposed to moisture and freeze/thaw-cycling, excluding constructions subjected to severe exposure 3.33 clay masonry subject to passive exposure masonry or elements of masonry which, under end use conditions, are not intended to be exposed to moisture and freezing conditions 3.34 Category I masonry units units with a declared compressive strength with a probability of failure to reach it not exceeding 5 % NOTE This may be determined via the mean or characteristic value. 3.35 Category II masonry units units not intended to comply with the level of confidence of Category I units 3.36 combined thickness of webs and shells sum of the thicknesses of the shells and webs from one face or header of a masonry unit to the opposite face or header respectively along whichever path, via the formed voids, gives the smallest value, expressed as a percentage of the unit width or length respectively 3.37 product group products from one manufacturer having common values for one or more characteristics 3.38 consignment shipment from the supplier ! 3.39 product type set of representative performance levels or classes of a construction product, in relation to its essential characteristics, manufactured using a given combination of raw materials or other elements in a specific production process" 4 Materials and manufacture See 3.2, 8.3.4 and 8.3.5. SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 10 5 Requirements for clay masonry units 5.1 General The requirements and properties specified in this standard shall be defined in terms of the test methods and other procedures referred to in this European Standard. NOTE It should be noted that the test methods are not usually applicable to specially shaped and accessory units as defined in !3.11 and 3.12". !In general, for specially shaped clay masonry units it will be satisfactory to declare the properties as that determined on units of a rectangular parallelepiped shape and of the same product type which has been subjected to a similar manufacturing process." The conformity criteria given in the following subclauses relate to !product type determination" (see 8.2) and, when relevant, to consignment testing (see Annex A). For the compressive strength of Category I units use a 50 % fractile (p = 0,50) for mean values and a confidence level of 95 %. For production evaluation, the manufacturer shall define the conformity criteria in the factory production control documentation (see 8.3). The manufacturer shall declare whether the unit fulfils the requirements for !P" units (see Figure 2) or !U" units (see Figure 3). 5.2 !P units: intended to be used in protected masonry" 5.2.1 Dimensions and tolerances (!P" units) 5.2.1.1 Dimensions (!P" units) The dimensions of a clay masonry unit shall be declared by the manufacturer in mm for length, width, and height, in that order (see Figure 1). They shall be given in terms of work size. NOTE In addition the co-ordinating size may be given.
Key 1 Length 3 Height 5 Face 2 Width 4 Bed 6 Header NOTE This relates to the normal use of the masonry unit in the wall. Figure 1 — Dimensions and surfaces SIST EN 771-1:2011+A1:2015



EN 771-1:2011+A1:2015 (E) 11 The measurement procedure shall be in accordance with EN 772-16. 5.2.1.2 Dimensional tolerances (!P" units) 5.2.1.2.1 Tolerances (!P" units) The manufacturer shall also declare which of the tolerance categories for mean values in 5.2.1.2.2 the clay masonry units fulfil. When relevant to the uses for which the unit is placed on the market, the manufacturer shall also declare which of the range categories in 5.2.1.2.3 a given consignment of the clay masonry units fulfils. NOTE This additional declaration may be made for example in relation to: — achievement of
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