DIN EN 846-6-2012 Methods of test for ancillary components for masonry - Part 6 Determination of tensile and compressive load capacity and load displacement characteristics of wall.pdf

1、November 2012 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 91.080.30!$Y+“1925408www.din.deDDIN EN 846-6Methods of test for ancillary components for masonry Part 6: Determination of tensile and compressive load capacity and loaddisplacement characteristics of wall ties (single end test);English version EN 846-6:2012,English translation of DIN EN 846-6:2012

3、-11Prfverfahren fr Ergnzungsbauteile fr Mauerwerk Teil 6: Bestimmung der Zug- und Drucktragfhigkeit sowie der Steifigkeit vonMauerankern (Einseitige Prfung);Englische Fassung EN 846-6:2012,Englische bersetzung von DIN EN 846-6:2012-11Mthodes dessai pour composants accessoires de maonnerie Partie 6:

4、Dtermination de la rsistance de traction et en compression et de la rigiditdattaches murales (essai dextrmit simple);Version anglaise EN 846-6:2012,Traduction anglaise de DIN EN 846-6:2012-11SupersedesDIN EN 846-6:2000-08www.beuth.deIn case of doubt, the German-language original shall be considered

5、authoritative.Document comprises 14 pages 10.12 DIN EN 846-6:2012-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 125 “Masonry” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was

6、the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-06-04 AA Prfverfahren (SpA zu CEN/TC 125/WG 4). Amendments This standard differs from DIN EN 846-6:2000-08 as follows: a) in Subclause 6.1 “General”, the requirements relating to the number of

7、 test specimens have been modified; b) in Subclause 7.1 “Setting specimen in test machine”, further requirements have been included; c) normative references have been updated. Previous editions DIN EN 846-6: 2000-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 846-6 August 2012 ICS 91.080.30

8、 Supersedes EN 846-6:2000English Version Methods of test for ancillary components for masonry - Part 6: Determination of tensile and compressive load capacity and load displacement characteristics of wall ties (single end test) Mthodes dessai pour composants accessoires de maonnerie - Partie 6: Dter

9、mination de la rsistance de traction et en compression et de la rigidit dattaches murales (essai dextrmit simple) Prfverfahren fr Ergnzungsbauteile fr Mauerwerk - Teil6: Bestimmung der Zug- und Drucktragfhigkeit sowie der Steifigkeit von Mauerankern (Einseitige Prfung) This European Standard was app

10、roved by CEN on 11 February 2012. 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 natio

11、nal 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 langua

12、ge 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,

13、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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Mana

14、gement Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 846-6:2012: EEN 846-6:2012 (E) 2 Contents Page Foreword . 31 Scope 42 Normative references . 43 Principle . 44 Materials . 54.1 T

15、imber frame elements (studs) 54.2 Timber frame sheathing . 54.3 Metal frame or stud elements and concrete elements including lightweight aggregate concrete . 54.4 Masonry units 54.4.1 Sampling 54.4.2 Testing 54.5 Screws, nails, grouts, plugs, slot sections or other fixing ancillary items . 54.6 Shea

16、thing nails 54.7 Concrete for slot type anchors 55 Apparatus 66 Preparation and storage of test specimens . 66.1 General . 66.2 Timber frame . 66.3 Other support materials . 76.4 Ties installed into cast in slots 76.5 Masonry units 76.6 Storage . 77 Procedure 77.1 Setting specimen in test machine .

17、77.2 Test environment 87.3 Loading 88 Expression of results 89 Test report . 8DIN EN 846-6:2012-11 EN 846-6:2012 (E) 3 Foreword This document (EN 846-6:2012) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This European Standard shall be given

18、the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. Attention is drawn to the possibility that some of the elements of this document may

19、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 846-6:2000. The principal changes in this document form the previous edition relate to the number of ties to be tested, the location of the cla

20、mp during testing and the treatment of slope and movement tolerant ties. Ties are to now be placed at the minimum declared embedment length rather than a length calculated from the tie length and design cavity width. Ten ties are tested in tension and ten in compression. In the compression tests the

21、 ties are loaded over an extended cavity, or alternatively provision is made for evaluating the cavity section by calculation. Where ties are designed to tolerate either an induced slope or movement then prior to test they are cycled fifty times through the slope or movement for which they have been

22、 designed. According to the CEN/CENELEC Internal Regulations, the national standards organisations 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,

23、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. DIN EN 846-6:2012-11 EN 846-6:2012 (E) 4 1 Scope This European Standard spec

24、ifies a method for determining the tensile and compressive load capacity and load displacement characteristics of wall ties screwed, nailed, grouted or otherwise attached to frame elements or to inner leaf materials. The test is intended for ties for connecting masonry leaves to frame structures and

25、 to the inner leaves of cavity walls other than by embedding the inner connection in a mortar joint. 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 cite

26、d applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 300, Oriented Strand Boards (OSB) Definitions, classification and specifications EN 338, Structural timber Strength classes EN 771-1, Specification for masonry units Part 1: Clay m

27、asonry units EN 771-2, Specification for masonry units Part 2: Calcium silicate masonry units EN 771-3, Specification for masonry units Part 3: Aggregate concrete masonry units (Dense and lightweight aggregates) EN 771-4, Specification for masonry units Part 4: Autoclaved aerated concrete masonry un

28、its EN 771-5, Specification for masonry units Part 5: Manufactured stone masonry units EN 771-6, Specification for masonry units Part 6: Natural stone masonry units EN 772-1, Methods of test for masonry units Part 1: Determination of compressive strength EN 772-10, Methods of test for masonry units

29、Part 10: Determination of moisture content of calcium silicate and autoclaved aerated concrete units EN 845-1, Specification for ancillary components for masonry Part 1: Ties, tension straps, hangers and brackets EN 206-1, Concrete Specification performance, production and conformity 3 Principle The

30、 tie is screwed, nailed, grouted or attached using other devices such as keys in slots, to a representative section of the frame element or inner leaf material using normal site techniques. The tie is then subjected to tension or compression until failure occurs. DIN EN 846-6:2012-11 EN 846-6:2012 (

31、E) 5 4 Materials 4.1 Timber frame elements (studs) Timber sections shall be of coniferous timber as specified in accordance with strength class C24 of EN 338 and with a density of not greater than 600 kg/m and a moisture content of 9 15 % by mass or as specified. 4.2 Timber frame sheathing Timber fr

32、ame sheathing shall be of oriented strand board (OSB) in accordance with EN 300 or an acceptable structurally equivalent alternative material as specified and should be 400 mm 10 mm square and at least 8 mm thick. 4.3 Metal frame or stud elements and concrete elements including lightweight aggregate

33、 concrete Representative sections of metal frame or stud elements or representative concrete samples shall be used as specified. 4.4 Masonry units 4.4.1 Sampling Masonry units shall be as specified in accordance with EN 771. All of the masonry units for individual tests shall be taken from the same

34、consignment. Masonry units shall be in an air dry condition, unless otherwise specified. 4.4.2 Testing Determine the compressive strength of a sample of masonry units using the method given in EN 772-1. Measure the moisture content by mass of AAC or calcium silicate units in accordance with EN 772-1

35、0. For other types of units, record the method of conditioning. Record the age of non-autoclaved concrete units at the time of testing the masonry specimens. 4.5 Screws, nails, grouts, plugs, slot sections or other fixing ancillary items Fixing materials shall be in a clean dry uncontaminated state,

36、 either as supplied by the manufacturer or supplier for use with the tie system or as specified. 4.6 Sheathing nails Sheathing nails for timber frame sheathing shall be as specified. 4.7 Concrete for slot type anchors Concrete shall comply with EN 206-1 and have a minimum compressive strength class

37、of C 20/25 or as specified. DIN EN 846-6:2012-11 EN 846-6:2012 (E) 6 5 Apparatus 5.1 A simple support for the frame/wall element specimen such that the reactions are no closer to the tie than twice the depth of embedment or 100 mm whichever is the greater. The support system shall not apply any rest

38、raint against splitting or bowing of the specimen, apart from the friction generated at the reaction due to the applied load. For ties designed for large differential movements (e.g. timber frame ties) the clamp system shall allow a simulated vertical differential movement to be applied. (A typical

39、arrangement is shown in Figure 1). 5.2 A clamp for gripping the free end of the tie and applying a tensile or compressive load. (Typical clamps are shown in Figure 2.) NOTE Clamping failures will invalidate the deformation measurement and therefore specially designed clamps may be needed for particu

40、lar tie forms. The use of low melting point alloys to act as chucks is recommended for complex pressing. Some frame ties will require special clamps to deal with the nailing/screwing tab. 5.3 A test machine capable of applying the load without distortion such that the maximum load reading occurs abo

41、ve 20 % of the full scale reading. The load shall be measured using a load cell device having a digital or analogue readout with a maximum error of 2 % of the full scale reading. The system shall apply an axial force to the specimen. The system or universal test machine shall be fitted with a rigid

42、connection between the clamp which is used to apply tension or compression loads and the machine cross-head or loading device, i.e. any pivot ball joint or universal joint connections to the load cells shall be locked. 5.4 A means of measuring the displacement of the specimen in relation to the clam

43、p using at least two symmetrically placed dial gauges or electrical linear displacement transducers (as shown in Figure 1). Displacement shall be measured to the nearest 0,01 mm. 5.5 For polymer-based (plastic) products only, a controlled temperature and humidity chamber or room which may be a chamb

44、er which fits over the specimen. 6 Preparation and storage of test specimens 6.1 General Ten specimens each for compression and tensile testing shall be prepared for testing at the declared minimum embedment length. The number of specimens for each shall be doubled where both ends of asymmetrical ti

45、es are tested separately. NOTE The fastening or tie should be installed approximately perpendicular to the face of the supporting material. Where the design of the tie precludes this, the manufacturers fixing instructions should be followed. 6.2 Timber frame Cut or manufacture timber frame squares c

46、onsisting of a piece of sheathing material fixed centrally to a length of stud by sheathing nails at 150 mm centres. None of the nails shall be closer to the centre of the stud than 20 mm. Fix ties to these timber frame squares using the fastenings provided with the ties and following the tie manufa

47、cturers instructions. Ties shall be located to within 10 mm of the centre of the timber frame square. (A typical specimen is shown in Figure 3.) DIN EN 846-6:2012-11 EN 846-6:2012 (E) 7 6.3 Other support materials Cut representative sections of studs, rails, columns or walls such that the length is

48、at least 215 mm. Fix ties or surface-mounted slot devices to them using the fastenings provided and using normal site practice or follow the tie manufacturers instructions. Ties shall be located to within 10 mm of the centre of the specimen. 6.4 Ties installed into cast in slots Install lengths of the slot section flush against one face of a wall mould of suitable dimensions using nails or proprietary clips. The slot should be a minim