ASTM F2421-05(2011)

Standard Test Method for Measurement of Resilient Floor Plank by Dial Gage

SIGNIFICANCE AND USE
The combination of both dimensional and squareness of resilient floor plank is an important consideration because installed flooring may exhibit an objectionable appearance when either or both characteristics deviate from established tolerances. This test method provides a means of determining actual dimensional and squareness by using a single apparatus and procedure.
SCOPE
1.1 This test method establishes the procedures for determination of both dimension (length and width) and squareness of resilient floor plank. This test method is intended for use with rectangular plank up to 36 in. (915 mm).
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are provided in applicable sections of this test method.
1.2 The values stated in inch-pounds units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Oct-2011
• ICS: 79.080 - Semi-manufactures of timber
• Technical Committee: F06 - Resilient Floor Coverings
• Drafting Committee: F06.20 - Test Methods

Relations

• Replaces: ASTM F2421-05 - Standard Test Method for Measurement of Resilient Floor Plank by Dial Gage
• Effective Date: 01-Nov-2011
• Replaced By: ASTM F2421-19 - Standard Test Method for Measurement of Resilient Floor Plank by Dial Gage
• Effective Date: 01-Jan-2019
• Referred By: ASTM F3404-23a - Standard Specification for Heterogeneous Polyurethane Tile or Plank Flooring
• Effective Date: 01-Nov-2011
• Referred By: ASTM F3261-20 - Standard Specification for Resilient Flooring in Modular Format with Rigid Polymeric Core
• Effective Date: 01-Nov-2011
• Referred By: ASTM F2199-20 - Standard Test Method for Determining Dimensional Stability and Curling Properties of Resilient Flooring after Exposure to Heat
• Effective Date: 01-Nov-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2421 − 05 (Reapproved 2011)
Standard Test Method for
Measurement of Resilient Floor Plank by Dial Gage
This standard is issued under the fixed designation F2421; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method establishes the procedures for determi- 4.1 The combination of both dimensional and squareness of
nation of both dimension (length and width) and squareness of resilient floor plank is an important consideration because
installed flooring may exhibit an objectionable appearance
resilient floor plank. This test method is intended for use with
rectangular plank up to 36 in. (915 mm). when either or both characteristics deviate from established
tolerances. This test method provides a means of determining
1.2 The values stated in inch-pound units are to be regarded
actual dimensional and squareness by using a single apparatus
as standard. The values given in parentheses are mathematical
and procedure.
conversions to SI units that are provided for information only
and are not considered standard.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 The apparatus shall consist of five dial gages and two
safety concerns, if any, associated with its use. It is the
reference index strips mounted on a flat bedplate in a configu-
responsibility of the user of this standard to establish appro-
ration that, by rotation and flipping of the sample, allows the
priate safety and health practices and determine the applica-
measurement of all four sides of resilient plank samples. (See
bility of regulatory limitations prior to use. Specific precau-
Fig. 1). One edge of the bedplate is elevated to create a test
tionary statements are provided in applicable sections of this
surface, which is offset or tilted 15+/-1 degrees from horizon-
test method.
tal. The offset applies minimal pressure to the test specimen
1.4 The values stated in inch-pounds units are to be re-
against the longer index strip to ensure repeatable measure-
garded as the standard. The values given in parentheses are for
ment. A reference plate representing target plank size and
information only.
squareness (see Fig. 2) is used to zero all dial gages.
5.2 Dial Gages—The five dial gages are mounted in guide
2. Referenced Documents
slots, which are machined into the bedplate to allow for
2.1 ASTM Standards:
measurement of various plank sizes. For the two corner gages
F141 Terminology Relating to Resilient Floor Coverings
(B & D) and the squareness gage (A) the position must be at
least within 10 % of the corner edge relative to the respective
2.2 ANSI Standards:
length and width of the plank. For the center gages (C & E) the
ANSI/ASQC Z1.4-1993 Sampling Procedures and Tables
position must be at least within 10 % of the centerline relative
for Inspection by Attributes
to the respective length and width of the plank.Any dial gages
may report measurements using either electrical or mechanical
3. Terminology
means, but shall be graduated to read to the 0.001 in. (0.025
3.1 Definitions: For definitions of terms used in this test
mm) and have a stemtravel greater than 0.25 in. (6.4 mm).The
method, refer to Terminology F141.
contact foot of the dial-gage stem shall be flat, 0.50 to 0.75 6
0.001 in. (12.7-19.1 mm 6 0.025 mm) in diameter and exert a
total force of not more than 3.0 6 0.1ozf (0.83 6 0.003 N).
This test method is under jurisdiction of ASTM F06 Committee on Resilient
Dial gages shall be positioned securely so that when the
Floor Coverings and is the direct responsibility of subcommittee F06.20 on Test
reference plate is in place, the contact foot is extended
Methods - Products Construction/Materials
approximately 50 % of its full travel.
Current edition approved Nov. 1, 2011. Published November 2011. Originally
approved in 2005. Last previous edition approved in 2005 as F2421–05. DOI:
5.3 Index Strips—The apparatus contains two fixed index
10.1520/F2421-05R11.
strips.Ahorizontal index strip shall be mounted parallel to and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
just inside the lower edge of the bedplate. It shall be 1.5 6 0.1
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
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F2421 − 05 (2011)
FIG. 1 Plank Measurement Apparatus
FIG. 2 Reference Plate
in. (38 6 3 mm) greater in length and a minimum of twice the Table 1 and the acceptable quality level (AQL) shall be 6.5
thickness of the largest plank to be tested.Asecond strip shall defects per hundred units as noted in Table 11-A. The lot size
be mounted 90 degrees 6 10 s (1.57080 6 0.00005 rad.) to the shall be expressed in units. A unit represents a single,
horizontalindexstrip.Thelowerendofthisindexstripshallbe manufactured, inventoried, fini
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