1、Designation: F 2055 09Standard Test Method forSize and Squareness of Resilient Floor Tile by Dial GageMethod1This standard is issued under the fixed designation F 2055; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of bothdimensions (length and width) and squareness of resilient floortile. Th
3、is test method is intended for use with square tilesranging from a nominal 9 in. (226 mm) to 40 in. (1016 mm) indimension.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address
4、 all of thesafety concerns, if any, associated with its use. It is theresponsibility 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:2E 177 Practice fo
5、r Use of the Terms Precision and Bias inASTM Test MethodsE 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Significance and Use3.1 Both dimension and squareness of resilient floor tile areimportant considerations, because installed flooring may ex-hi
6、bit an objectionable appearance when either or both charac-teristics deviate from established tolerances. This test methodprovides a means of determining actual dimensions and square-ness by using a single apparatus and procedure.4. Apparatus4.1 The apparatus shall consist of four dial gages (refer-
7、enced A through D in Fig. 1) and two reference index stripsmounted on a flat bedplate in a configuration that, by rotationof the sample, allows the measurement of all four sides ofresilient tile samples (see Fig. 1). One edge of the bedplate iselevated to create a test surface which is offset or til
8、ted 15 61 degrees from horizontal. This offset applies minimal pressureto the test specimen against the longer index strip to ensurerepeatable measurement. A reference plate representing targettile size and squareness is used to zero all dial gages (see Fig.2).4.2 Dial GagesThe four dial gages are m
9、ounted in guideslots that are machined into the bedplate to allow for measure-ment of various tile sizes while remaining within 10% of thecorner of the tile edge (for the two corner gages and onesquareness gage) or within the central 10% of the tile edge (forthe center gage only). Dial gages may rep
10、ort measurementsusing either electrical or mechanical means, but they shall begraduated to read 0.001 in. (0.02 mm) and have a stem travelgreater than 0.25 in. (6 mm). The contact foot of the dial-gagestem shall be flat 0.500.75 6 0.001 in. (12.719.1 mm 6 0.2mm) in diameter and exert a total force o
11、f not more than 3.0 60.1 ozf (0.83 6 0.003 N). Dial gages shall be securelypositioned so that when the reference plate is in place, thecontact foot is extended approximately 50% of its full travel.4.3 Index StripsThe apparatus contains 2 fixed indexstrips. A horizontal index strip shall be mounted p
12、arallel to andjust inside the lower edge of the bedplate. It shall be 1.5 6 0.11This test method is under the jurisdiction ofASTM Committee F06 on ResilientFloor Coverings and is the direct responsibility of F06.20 Test Methods - ProductsConstruction/Materials.Current edition approved April 1, 2009.
13、 Published May 2009. Originallyapproved in 2000. Last previous edition approved in 2008 as F 2055-00(2008).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the stand
14、ards Document Summary page onthe ASTM website.FIG. 1 Tile Measurement Apparatus1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.in. (38 6 3 mm) greater in length and a minimum of twice thethickness of the largest tile to be tested. A
15、second index stripshall be mounted 90 6 10 s (1.57080 6 0.00005 rad.) to thehorizontal index strip. The lower end of this index strip shall be0.125 6 0.01 in. (3.1 6 0.25 mm) above the right end of thehorizontal index strip and is used to locate one corner of thesample tile.4.4 Reference PlateThe re
16、ference plate shall be made tothe target dimensions of the manufactured tile. The length andwidth dimensions shall be within 6 0.001 in. (0.02 mm) of thespecified dimensions of the resilient tile. The reference plateshall contain at least two sides which are perpendicular to 906 10 s (1.57080 6 0.00
17、005 rad.) to one another and are usedto set the squareness gage to zero.5. Specimens5.1 The specimens shall consist of 5 full size tiles.6. Conditioning6.1 Condition the test specimens, reference plate, and appa-ratus a minimum of 24 h at 73.4 6 1.8F (23 6 1C) and 506 5% relative humidity. Tests sha
18、ll be conducted in this sameenvironment. Samples shall be conditioned on a flat surfacesuch as a table or floor surface to ensure they will contact thebedplate uniformly during measurement.7. Procedure7.1 Place the appropriate reference plate onto the bedplatesurface and slide it firmly against the
19、two index strips. Set eachof the four dial indicators to zero. Remove the reference plate.All dial indicators will now reflect their fully extended mea-surements. In the case of digital dial indicators, the display willindicate a negative number. In the case of mechanical dialindicators, the display
20、 will move counter-clockwise from zero.NOTE 1Dirt and foreign particles may collect along the upper face ofthe index strip and affect the zero setpoint. Use a small brush to maintainthe cleanliness of the index strip surfaces before and after each use.7.2 Measuring Size and SquarenessIdentify one ed
21、ge ofthe sample tile as “Edge #1” by attaching a label to the face ofthe tile near that edge. Place the tile into the apparatus andcarefully move it into position such that it will depress all fourdial gages and is in firm contact with both index strips. Recordthe measurements on all four gages to t
22、he nearest 0.001 in.(0.02 mm).7.3 Remove the tile from the bedplate and rotate it 90 in theclockwise direction. Repeat the process described in 7.2 andrecord the four gage readings. Repeat for each of the tworemaining sides.7.4 After all samples have been measured, place the refer-ence gage back on
23、the bedplate to verify that no movement ofdial gages has occurred. A movement of greater than 0.001 in.(0.02 mm) shall be cause to repeat the measurement process.8. Calculations8.1 Tile SizeRecord all measurements in the formatshown in Table 1. Measurements shall be recorded to thenearest 0.001 in.
24、(0.02 mm) for all gages. The four rotationsprovide two measurements of the length and width at the centerand both edges of each of the tile specimens. Report thedimensions and squareness for each specimen using the for-mulas in 8.2.8.2 Perform the following calculations using Table 1 data todetermin
25、e length, width, and squareness deviations for thesample tile. The final report shall include tile size, test date, andlength, width, and squareness deviations.Length and Width Deviation Squareness DeviationLength Deviation, Left Side = (1A+3C)/2 Corner 1 = (D1)Length Deviation, Center = (1B+3B)/2 C
26、orner 2 = (D2)Length Deviation, Right Side = (1C+3A)/2 Corner 3 = (D3)Width Deviation, Left Side = (2A+4C)/2 Corner 4 = (D4)Width Deviation, Center = (2B+4B)/2Width Deviation, Right Side = (2C+4A)/29. Report9.1 Report the dimensions and squareness for each speci-men using the formulas in 8.2.10. Pre
27、cision and Bias10.1 The precision of this test method is based on anintralaboratory study of F 2055, Size and Squareness of Resil-ient Floor Tile by Dial Gage Method, conducted in 2007. Eachof seven laboratories tested six different types of flooring tilematerials for deviations across their length,
28、 width, and diago-nal. Every “test result” represents an individual determination.All participating laboratories reported ten replicate test results(from one operator) for each type of flooring material. PracticeE 691 was followed for the design and analysis of the data.310.1.1 Repeatability Limit,
29、(r)Two test results obtainedwithin one laboratory shall be judged not equivalent if theydiffer by more than the “r” value for that material; “r”isthe3Details are given in ASTM Research Report RR:F061008, available fromASTM International Headquarters.A: Tile Target Dimension 6 0.001 in. (0.02 mm)B: 9
30、0 6 10 s (1.57080 6 0.00005 rad.)FIG. 2 Reference PlateTABLE 1 Typical Measurement DataRotation No. Gage A Gage B Gage C Gage D1 0.002 0.003 0.002 0.0022 0.003 0.000 0.001 0.0033 0.004 0.001 0.003 0.0024 0.003 0.002 0.005 0.004F2055092interval representing the critical difference between two testres
31、ults for the same material, obtained by the same operatorusing the same equipment on the same day in the samelaboratory.10.1.1.1 Repeatability limits are listed in Tables 2-11.10.1.2 Reproducibility Limit, (R)Two test results shall bejudged not equivalent if they differ by more than the “R” valuefor
32、 that material; “R” is the interval representing the criticaldifference between two test results for the same material,obtained by different operators using different equipment indifferent laboratories.10.1.2.1 Reproducibility limits are listed in Tables 2-11.10.1.3 The terms (repeatabilty limit and
33、 reproducibilitylimit) are used as specified in Practice E 177.10.1.4 Any judgment in accordance with 10.1.1 and 10.1.2would have an approximate 95 % probability of being correct.10.2 BiasAt the time of this study, there was no acceptedreference material suitable for determining the bias of this tes
34、tmethod, therefore no statement on bias is being made.10.3 The precision statement was determined through sta-tistical examination of 1120 results, from seven laboratories,on six materials. These six tile materials were described as thefollowing:Material A: 12 in. by 12 in. VCTMaterial B: 12 in. by
35、12 in. VCTMaterial C: 18 in. by 18 in. Rubber TileMaterial D: 18 in. by 18 in. Vinyl TileMaterial E: 24 in. by 24 in. Rubber TileMaterial F: 24 in. by 24 in. Vinyl Tile10.4 To judge the equivalency of two test results, it isrecommended to choose the material closest in characteristicsto the test mat
36、erial.11. Keywords11.1 dial gage; resilient flooring; resilient tile; tileTABLE 2 Length Deviation Left (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0003 0.0045 0.0022 0
37、.0050 0.0061 0.0141B 0.0037 0.0023 0.0013 0.0027 0.0038 0.0075C 0.2126 0.0033 0.0024 0.0041 0.0066 0.0115D 0.0137 0.0023 0.0023 0.0034 0.0064 0.0094E 0.0158 0.0051 0.0035 0.0063 0.0098 0.0177F 0.0207 0.0044 0.0026 0.0052 0.0074 0.0147AThe average of the laboratories calculated averages.F2055093TABLE
38、 3 Length Deviation Center (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0005 0.0035 0.0016 0.0038 0.0044 0.0107B 0.0038 0.0018 0.0012 0.0022 0.0034 0.0062C 0.2126 0.0023
39、 0.0013 0.0027 0.0037 0.0076D 0.0141 0.0027 0.0011 0.0030 0.0031 0.0083E 0.0146 0.0040 0.0023 0.0047 0.0065 0.0131F 0.0207 0.0034 0.0024 0.0042 0.0066 0.0118AThe average of the laboratories calculated averages.TABLE 4 Length Deviation Right (inches)MaterialAverageAxStandardDeviation ofthe LabAverage
40、sS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0006 0.0026 0.0020 0.0033 0.0055 0.0093B 0.0041 0.0021 0.0017 0.0028 0.0048 0.0077C 0.2126 0.0029 0.0024 0.0039 0.0068 0.0108D 0.0151 0.0020 0.0019 0.0028 0.0055 0.0079E 0.0174 0.0054
41、 0.0043 0.0070 0.0119 0.0196F 0.0212 0.0051 0.0031 0.0061 0.0087 0.0171AThe average of the laboratories calculated averages.TABLE 5 Width Deviation Left (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability Li
42、mitrReproducibilityLimitRA 0.0016 0.0033 0.0015 0.0037 0.0043 0.0102B 0.0030 0.0024 0.0021 0.0033 0.0059 0.0092C 0.2124 0.0033 0.0023 0.0041 0.0065 0.0115D 0.0148 0.0034 0.0020 0.0040 0.0055 0.011E 0.0135 0.0044 0.0033 0.0057 0.0093 0.0158F 0.0214 0.0046 0.0032 0.0057 0.0088 0.0159AThe average of th
43、e laboratories calculated averages.TABLE 6 Width Deviation Center (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0021 0.0034 0.0014 0.0037 0.0039 0.0105B 0.0025 0.0023 0.0
44、022 0.0033 0.0061 0.0092C 0.2127 0.0022 0.0023 0.0032 0.0063 0.0090D 0.0154 0.0026 0.0013 0.0030 0.0038 0.0083E 0.0129 0.0043 0.0034 0.0056 0.0096 0.0158F 0.0205 0.0033 0.0028 0.0044 0.0078 0.0124AThe average of the laboratories calculated averages.F2055094TABLE 7 Width Deviation Right (inches)Mater
45、ialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0017 0.0029 0.0022 0.0037 0.0060 0.0104B 0.0033 0.0020 0.0023 0.0032 0.0066 0.0089C 0.2107 0.0024 0.0026 0.0037 0.0072 0.0102D 0.0156 0.0
46、032 0.0021 0.0039 0.0058 0.0109E 0.0136 0.0053 0.0032 0.0063 0.0089 0.0176F 0.0208 0.0046 0.0035 0.0059 0.0098 0.0164AThe average of the laboratories calculated averages.TABLE 8 D1 Squareness Deviation (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrRe
47、producibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0007 0.0028 0.0033 0.0045 0.0093 0.0127B 0.0001 0.0037 0.0026 0.0046 0.0072 0.0128C 0.0030 0.0036 0.0057 0.0070 0.0160 0.0197D 0.0018 0.0013 0.0029 0.0034 0.0082 0.0094E 0.0027 0.0055 0.0052 0.0078 0.0145 0.0218F 0.0029 0.
48、0059 0.0035 0.0070 0.0099 0.0196AThe average of the laboratories calculated averages.TABLE 9 D2 Squareness Deviation (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0009 0.
49、0050 0.0028 0.0058 0.0078 0.0162B 0.0039 0.0041 0.0025 0.0049 0.0070 0.0138C 0.0012 0.0028 0.0079 0.0088 0.0221 0.0246D 0.0005 0.0033 0.0039 0.0053 0.0109 0.0147E 0.0086 0.0060 0.0066 0.0092 0.0184 0.0258F 0.0015 0.0067 0.0031 0.0075 0.0086 0.0209AThe average of the laboratories calculated averages.TABLE 10 D3 Squareness Deviation (inches)MaterialAverageAxStandardDeviation ofthe LabAveragesS xRepeatabilityStandard DeviationSrReproducibilityStandard DeviationSRRepeatability LimitrReproducibilityLimitRA 0.0003 0.0034 0.0023 0.0042 0.
