1、Designation: C 499 78 (Reapproved 2003)Standard Test Method forFacial Dimensions and Thickness of Flat, RectangularCeramic Wall and Floor Tile1This standard is issued under the fixed designation C 499; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This
3、test method covers the determination of the facialdimensions and thickness of flat, rectangular ceramic wall andfloor tile. This test method covers tile as defined in Terminol-ogy C 242.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is th
4、eresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:C 242 Terminology of Ceramic Whitewares and RelatedProducts23. Terminology3.1 Definitio
5、ns of Terms Specific to This Standard:3.1.1 major facial dimensionthe overall length or widthof the tile, including the lugs on opposite sides.3.1.2 major thicknessthe thickness of tile, including anymaximum protuberances or ridges on the back.3.1.3 minor facial dimensionthe length or width of the t
6、ileexclusive of the lugs.3.1.4 minor thicknessthe thickness of tile that does notinclude maximum protuberances or ridges.4. Significance and Use4.1 This test method provides a means of determiningwhether a lot of tile meets specifications of variations in sizeand thickness. In specifications, the no
7、minal size always refersto the minor facial dimension and the nominal thickness of atile always refers to the major thickness.5. Apparatus5.1 A suitable measuring device such as a micrometer ordial indicator, reading in 0.001-in. (0.025-mm) divisions andaccurate to 60.001 in. (60.025 mm), shall be u
8、sed. If a dialindicator is used, suitable jigs for holding the tile and theindicator shall be provided.6. Test Specimens6.1 Select tile specimens at random from the lot to be tested.For tile smaller than 6 in.2(38.7 cm2) in facial area, use at leastten specimens for each test; for tile 6 in.2or larg
9、er in facialarea, use at least five specimens for each test. The samespecimens may be used for the determination of facial dimen-sions and thickness. Brush the specimens to remove alladhering particles of clay or sand.7. Procedure7.1 Major Facial DimensionMeasure the length of the tileto the nearest
10、 0.001 in. (0.025 mm) across two pairs of oppositelugs. Follow the same procedure for measuring the width of thetile. For tile whose lugs are not arranged opposite each other,it may be necessary to use a jig to obtain the major facialdimensions. For square tile, average all four measurements andcall
11、 the result the average major dimension. For oblong tile,average the two length measurements and call the result theaverage major length of the tile; average the two widthmeasurements and call the result the average major width ofthe tile.7.2 Minor Facial DimensionMeasure the length of the tileexclu
12、sive of the lugs to the nearest 0.001 in. (0.025 mm) in twoplaces. Follow the same procedure for measuring the widthexclusive of the lugs. Points of measurement shall be at least0.25 in. (6.4 mm) and not more than 0.50 in. (12.7 mm) fromthe corners of the tile. For tile with tapered sides, a jig isr
13、equired to determine the minor facial dimension of such tile.1This test method is under the jurisdiction ofASTM Committee C21 on CeramicWhitewares and Related Products and is the direct responsibility of SubcommitteeC21.06 on Ceramic Tile.Current edition approved Oct. 1, 2003. Published October 2003
14、 Originallyapproved in 1962. Last previous edition approved in 1999 as C 499 78 (1999).2Annual Book of ASTM Standards, Vol 15.02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.For square tile, average all four measurements and call
15、 theresult the average minor dimension. For oblong tile, averagethe two length measurements and call the result the averageminor length; average the two width measurements and call theresult the average minor width.7.3 Major ThicknessMeasure the major thickness to thenearest 0.001 in. (0.025 mm) at
16、each of the four corners of thetile including any protuberances or ridges on the back of thetile. Points of measurement shall be at least 0.25 in. (6.4 mm)and not more than 0.75 in. (19.0 mm) in from the edge of thetile. Average the four readings and call the result the averagemajor thickness.7.4 Mi
17、nor ThicknessMeasure the minor thickness to thenearest 0.001 in. (0.025 mm) near each of the four corners ofthe tile not including any protuberances or ridges on the backof the tile. Points of measurements shall be at least 0.25 in. (6.4mm) and not more than 0.75 in. (19.0 mm) in from the edge ofthe
18、 tile. Average the four readings and call the result theaverage minor thickness.8. Report8.1 The report shall give the type and number of tile testedand shall show for each specimen the following information:8.1.1 Average, maximum, and minimum values of the majorlength,8.1.2 Average, maximum, and mi
19、nimum values of the majorwidth,8.1.3 Average, maximum, and minimum values of the minorlength,8.1.4 Average, maximum, and minimum values of the minorwidth,8.1.5 Average, maximum, and minimum values of the majorthickness, and8.1.6 Average, maximum, and minimum values of the minorthickness.NOTE 1For sq
20、uare tile, 8.1.2 and 8.1.3 shall be omitted. For tilewithout lugs, major and minor facial dimensions are identical. The majorand minor thickness of tile without any protuberances or ridges on theback is identical.9. Precision and Bias9.1 PrecisionThe precision of the average dimensionsreported is 60
21、002 in. (0.05 mm).9.2 BiasBias depends almost entirely on the accuracy ofthe measuring devices and care taken to set up the equipment.No interlaboratory data are available with which to estimatebias.10. Keywords10.1 ceramic tile; facial dimension; major dimension; minordimension; thickness dimensio
22、nASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, ar
23、e entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standa
24、rdsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Commit
25、tee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C 499 78 (2003)2
