1、July 2011 Translation by DIN-Sprachendienst.English price group 11No 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).ICS 9
2、1.100.25!$sSn“1804875www.din.deDDIN EN 772-16Methods of test for masonry units Part 16: Determination of dimensionsEnglish translation of DIN EN 772-16:2011-07Prfverfahren fr Mauersteine Teil 16: Bestimmung der MaeEnglische bersetzung von DIN EN 772-16:2011-07Mthodes dessai des lments de maonnerie P
3、artie 16: Dtermination des dimensionsTraduction anglaise de DIN EN 772-16:2011-07SupersedesDIN EN 772-16:2005-05www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.06.11 17DIN EN 772-16:2011-07 A comma is used as the decimal marker. Na
4、tional 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 the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-06-0
5、4 AA Prfverfahren (SpA zu CEN/TC 125/WG 4). Amendments This standard differs from DIN EN 772-16:2005-05 as follows: a) normative references have been updated; b) specifications relating to the measurements to be taken for each dimension have been rendered more precise; c) separate provisions are pro
6、vided for calcium silicate units which have irregularities on some of their faces; d) Annex B “Significant technical changes between this European standard and the previous edition” has been added. Previous editions DIN EN 772-16: 2000-09, 2005-05 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
7、EN 772-16 May 2011 ICS 91.100.25 Supersedes EN 772-16:2000English Version Methods of test for masonry units - Part 16: Determination of dimensions Mthodes dessai des lments de maonnerie - Partie 16: Dtermination des dimensions Prfverfahren fr Mauersteine - Teil 16: Bestimmung der Mae This European S
8、tandard was approved by CEN on 25 December 2010. 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 concer
9、ning 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
10、 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, France, Germany, Greece, Hungary, Iceland, Irelan
11、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17,
12、 B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 772-16:2011: EEN 772-16:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Principle 44 Symbols 45 Apparatus .46 Preparation of specimens .56.
13、1 Sampling .56.2 Surface treatment 57 Procedure .57.1 Length, width and height 57.2 Thickness of shells and webs .97.3 Depth of holes 97.4 Plane parallelism of the bed faces .97.5 Combined thickness of webs and shells .98 Calculation and expression of results 109 Test report . 10Annex A (informative
14、) Examples of paths chosen for the measurement of combined thickness . 12Annex B (informative) Significant technical changes between this European standard and the previous edition 15DIN EN 772-16:2011-07 EN 772-16:2011 (E) 3 Foreword This document (EN 772-16:2011) has been prepared by Technical Com
15、mittee 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 November 2011, and conflicting national standards shall be withdrawn at the la
16、test by November 2011. 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 772-16:2000. Annex B provides detai
17、ls of significant technical changes between this European Standard and the previous edition. 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,
18、Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 772-16:2011-07 EN 772-16:2011 (E)
19、4 1 Scope This European Standard specifies a method of determining the overall dimensions, thickness and combined thickness of shells and webs, depth of voids and plane parallelism of the bed faces of masonry units. 2 Normative references The following referenced documents are indispensable for the
20、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 771-1, Specification for masonry units Part 1: Clay masonry units EN 771-2, Specification for masonry units
21、 Part 2: Calcium silicate masonry units EN 771-3, Specification for masonry units Part 3: Aggregate concrete masonry units (Dense and light-weight aggregates) EN 771-4, Specification for masonry units Part 4: Autoclaved aerated concrete masonry units EN 771-5, Specification for masonry units Part 5:
22、 Manufactured stone masonry units EN 771-6, Specification for masonry units Part 6: Natural stone masonry units 3 Principle After preparation, the length, width and height of the specimens, the thickness of shells and webs, depth of holes and plane parallelism of bed faces are measured with an appro
23、priate device. 4 Symbols lu is the length of the masonry unit defined by its intended orientation in use, (mm); wu is the width of the masonry unit defined by its intended orientation in use, (mm); hu is the height of the masonry unit defined by its intended orientation in use, (mm). 5 Apparatus An
24、appropriate measuring device or devices conforming to the requirements for measuring precision given in Table 1. DIN EN 772-16:2011-07 EN 772-16:2011 (E) 5 Table 1 Measurement precision Tolerance on the dimension being measured mm Maximum measuring error mm 1 0,5 If the tolerance class of the dimens
25、ion being measured is not known then the maximum measuring error of the measuring device shall be not more than 0,1 mm. The device used for measuring the thickness of webs and shells shall have a jaw of at least 10 mm in length. 6 Preparation of specimens 6.1 Sampling The method of sampling shall be
26、 in accordance with the relevant part of EN 771. The minimum number of specimens shall be six except in the determination of combined thickness and plane parallelism, where it is three, but a larger minimum number may be specified in the product specification, in which case that larger number shall
27、be used. 6.2 Surface treatment Remove any superfluous material adhering to the unit as a result of the manufacturing process before measuring. Before measurement of the thickness of webs and shells the bed face of the unit should be ground to remove any such material. 7 Procedure 7.1 Length, width a
28、nd height For clay, aggregate concrete, autoclaved aerated concrete, manufactured stone and natural stone masonry units determine the length (lu), the width (wu) and the height (hu) using procedure a), procedure b) or procedure c) as is relevant. a) Two measurements taken near the edges of each spec
29、imen at the positions shown in Figure 1 a). If two of the three following conditions are satisfied lu 250 mm, wu 125 mm, hu 100 mm, use procedure b). b) One measurement at the mid point of the unit as shown in Figure 1 b) using a calliper with overlapping jaws aligned along the dotted line. c) For s
30、pecimens having irregular surfaces (tongues and grooves, grip holes, rendering keyways, etc.) determine the length, width and height at the positions shown in Figure 1 c). For calcium silicate masonry units determine the length (lu), the width (wu) and the height (hu) using DIN EN 772-16:2011-07 EN
31、772-16:2011 (E) 6 procedure (d) or procedure (e) as is relevant. d) One measurement taken approximately at the centre of each specimen at the positions shown in Figure 1(d). e) For specimens having irregular surfaces (tongues and grooves, grip holes, rendering keyways, etc. determine the length, wid
32、th and height at the positions shown in Figure 1 e). Length Width Height Figure 1 a) - Measurement positions Length Width Height Figure 1b) - Measurement positions DIN EN 772-16:2011-07 EN 772-16:2011 (E) 7 Length Width Height Figure 1 c) - Measurement positions DIN EN 772-16:2011-07 EN 772-16:2011
33、(E) 8 Length Width Height Figure 1 d) - Measurement Positions Figure 1 e) - Measurement Positions DIN EN 772-16:2011-07 EN 772-16:2011 (E) 9 Figure 1 f) - Measurement positions 7.2 Thickness of shells and webs Where required by the relevant part of EN 771, measure the thickness of the webs and shell
34、s of each specimen for each declared web and shell thickness. Measure at discrete points at three separate positions on the type of web or shell being measured. The positions should be chosen by visual inspection to be representative of the minimum thickness of the web or shell being measured. State
35、 the measured thickness of the webs and the shells of each specimen to the nearest 0,2 mm. 7.3 Depth of holes Where required by the relevant part of EN 771, measure the depth of each hole which does not pass through the masonry unit at two different positions. State the result of each depth measurem
36、ent to the nearest 0,5 mm. 7.4 Plane parallelism of the bed faces Where required by the relevant part of EN 771, determine the plane parallelism of the bed faces of the unit using procedure f) and as shown in Figure 1 f). Procedure f): Ensure that the masonry unit is positioned in a stable manner on
37、 a flat dimensionally stable surface prior to the measurement. Measure the distance from the flat surface to the top of the bed face on all four corners of the masonry unit. State the result of each measurement to the nearest 0,2 mm. 7.5 Combined thickness of webs and shells Determine the combined t
38、hickness of webs and shells. This is the sum of the thicknesses of individual webs and shells on a path linking the formed voids and going from one face to the opposite face and/or one header to the opposite header. Determine the thickness of each individual web or shell on the chosen path. NOTE The
39、 path which is chosen may not be a straight line, but is the one which gives the lowest combined thickness. Some examples are shown in Annex A. DIN EN 772-16:2011-07 EN 772-16:2011 (E) 10 8 Calculation and expression of results If option a) or option c) or option e) of 7.1 is chosen, calculate the l
40、ength (lu), width (wu) and height (hu) of each specimen as the mean of the two measurements, where two are taken (option e) expressed to the nearest 0,1mm, 0,2 mm or 0,5 mm depending on the tolerance on the dimension being measured (see Table 1). If option b) or option d) or option e) (where one mea
41、surement is taken) of 7.1 is chosen, express the length (lu), width (wu) and height (hu) of each specimen to the nearest 0,1 mm, 0,2 mm or 0,5 mm depending on the tolerance on the dimension being measured (see Table 1). Calculate the length, width and height for the sample as the mean of the values
42、of the individual specimens. Express the result to the nearest 0,1 mm when the measuring error is 0,1 mm, 0,5 mm when the maximum measuring error is 0,2 mm and to the nearest 1 mm when the maximum measuring error is 0,5 mm. Calculate the mean web and shell thickness for each specimen to the nearest
43、0,2 mm. Calculate the thickness of webs and shells as the mean of the values of the individual specimens for the sample and express the result to the nearest 0,5 mm. Calculate the mean depth of each hole, where necessary, and state this to the nearest 0,5 mm. Calculate the depth of the holes for the
44、 sample as the mean values of the individual specimens to the nearest 1 mm. Calculate the deviation from the plane parallelism as the difference between the maximum and minimum measured distance from the corner of the top bed face of the masonry unit to the flat surface and express it to the nearest
45、 0,2 mm. The deviation from plane parallelism is taken to be the largest value from all of the units expressed to the nearest 0,2 mm. Calculate the sum of the thicknesses of the longitudinal webs and shells along the imaginary path from one face to the opposite face of the unit to the nearest 0,5 mm
46、. Express the result as a percentage of the width of the unit to the nearest percent. Calculate the sum of the thicknesses of the transverse webs and shells along an imaginary path from one header to the opposite header of the unit to the nearest 0,5 mm. Express the result as a percentage of the len
47、gth of the unit to the nearest percent. 9 Test report The test report shall contain the following information: a) number, title and date of issue of this European Standard; b) a description of the specimens to the relevant part of EN 771; c) method of sampling and by which organization; d) date of r
48、eceipt of the specimens by the test laboratory; e) date of testing the specimens; f) number of specimens in sample; g) a description of the measuring device; h) way of measuring see 7.1 a), b), c), d) or e); DIN EN 772-16:2011-07 EN 772-16:2011 (E) 11 i) length (lu), width (wu) and height (hu) of ea
49、ch specimen expressed to the nearest 0,1 mm, 0,2 mm or 0,5 mm (see Clause 8), the mean values of length, width and height for the sample being expressed to the nearest 0,1 mm, 0,5 mm or 1 mm (see Clause 8) and the precision of the measuring device; j) thickness of shells and webs, when required by the relevant part of EN 771, stated to the nearest 0,2 mm for each individual specimen and the value for the sample which is the mean of the individual thicknesses stated to th
