ASTM F373-01

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:F373–01
Standard Test Method for
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Embossed Depth of Resilient Floor Coverings
This standard is issued under the fixed designation F 373; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript 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. Scope 4. Apparatus
1.1 Two important characteristics involved in the manufac- 4.1 Theapparatusshallconsistofacomparatorstandhaving
ture of resilient flooring relate to the smoothness of the wear a flat anvil base at least 6 in. (15 cm) square, equipped with a
surface and the hardness of the layers under the wear surface. dial micrometer graduated to 0.001 in. (0.02 mm), and a
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The surfaces may vary from completely textured areas to hemispherical pressure foot ⁄32 in. (0.80 mm) in diameter. The
portions that are flat but separated by textured areas. This test foot shall exert a force of not more than 1 ozf (0.28 N) at any
method covers flooring with these interrupted wear surfaces point in its travel.The force shall be obtained by an appropriate
which are not supported by soft, cushioned layers. weight. The plunger of the gage shall be perpendicular to the
1.2 The values stated in inch-pound units are to be regarded anvil.
as the standard. The values given in parentheses are for
5. Test Specimen
information only.
1.3 This standard does not purport to address all of the 5.1 The specimen shall be a piece of flooring at least 9 by 9
in. (230 by 230 mm).
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6. Calibration
priate safety and health practices and determine the applica-
6.1 The calibration of the gage shall be verified by means of
bility of regulatory limitations prior to use.
gage blocks or shim stock of known thickness of the appro-
2. Referenced Documents
priate thickness for the depths being measured.
2.1 ASTM Standards:
7. Conditioning
E 691 Practice for Conducting an Interlaboratory Study to
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7.1 Condition the specimens at least 24 h at 73.4 6 3.6°F
Determine the Precision of a Test Method
(23 6 2°C) and 50 6 5 % relative humidity. Test at the same
3. Significance
conditions.
3.1 This test method is designed to measure the vertical
8. Procedure
distancebetweenanytwolevelsonthefaceoftheflooring,that
8.1 Select the two types of areas on a specimen that are to
is, between any two flat areas, between a flat area and any part
be examined.
of a textured area, or between two textured areas. This vertical
8.2 Zero the gage at a random point on the higher area.
distance may be of interest in itself or it may be applied to the
8.3 Move the gage to a random spot in the second area and
questions of: (1) how much of the thickness of the flooring is
measure the depth.
available before the pattern is destroyed; or (2) how deep the
8.4 Whenmeasuringonanominallyflatwearingsurface,do
depressed areas must be before valley printing ink is not
not place the tip close to a built-up shoulder area around a
walked on in normal traffic.
depressed spot; such a shoulder reading would give an errone-
ous result.
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ThistestmethodisunderthejurisdictionofASTMCommitteeF06onResilient
8.5 Make five measurements per specimen scattered at
Floor Coverings and is the direct responsibility of Subcommittee F06.20 on Test
random over the specimen face. Record the measurements to
Methods—Products Construction/Materials.
the nearest 0.001 in. (0.02 mm).
Current edition approved March 10, 2001. Published April 2001. Originally
e1
published as F 373–73. Last previous edition F 373–82(1994) .
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Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F373
B
Sr is the within-laboratory standard deviation of the average.
9. Report
C
r = 2.83 Sr.
9.1 Report the average of the five measurements calculated D
SR is the between-laboratory standard deviation of the average.
E
to 0.001 in. (0.02 mm) as the depth between the two types of
R=2.83SR.
areas of interest. 10.3 Repeatability (Sr, r)—In comparing two average val-
9.2 Report the minimum and maximum values obtained. ues for the same material obtained by the same operator using
the same equipment on the same day, the means should be
10. Precision and Bias
judged not equivalent if they differ by more than the r value for
10.1 The number of laboratories, materials, and determina-
that material and condition.
tions in this study does meet the minimum requirements for
10.4 Reproducibility (SR, R
...