ASTM F2508-16e1
(Practice)Standard Practice for Validation, Calibration, and Certification of Walkway Tribometers Using Reference Surfaces
Standard Practice for Validation, Calibration, and Certification of Walkway Tribometers Using Reference Surfaces
SIGNIFICANCE AND USE
5.1 To be meaningful, walkway tribometer results must correlate the slip characteristics of a surface or contaminant, or both, to the actual propensity for human slips. To achieve this goal, walkway tribometer models must be validated against a standard with relevance to human ambulation.
5.2 This practice prescribes a series of reference surfaces with known relative slip potential ranging from very high to low (as defined by laboratory conditions only) upon which walkway tribometer models can be validated. The relative slip potential of each reference surface was established from human subject walking trials.3
5.3 The following should be considered in applying the validation and calibration obtained by this practice:
5.3.1 The scientific study upon which the validation process is based was conducted with a select population of young adults (mean age 26 years) who were free from gait deviations while walking in a straight path on a level surface with a mean walking velocity of 2.18 m/s. This walking velocity is faster than the average walking velocity for the general population which includes a much wider age range with greater variability; thus, the study sample population of pedestrians and conditions is not representative of the larger general population of pedestrians.
5.3.2 All subjects walked in Oxford-style shoes whose soles were constructed of smooth styrene butadiene rubber (SBR) with 75A Shore hardness. The shoe style and sole material is not representative of all combinations available in the marketplace.
5.3.3 The reference surfaces defined in this practice are not representative of all walkway surfaces. The outcome of the validation practice reflects performance on the type of reference surfaces and surface conditions defined in this practice only. Validation and calibration of a walkway tribometer as defined by this practice does not imply validation and calibration under all combinations of test foot materials and walkway surfaces.
5...
SCOPE
1.1 This practice is intended to establish the procedures for validation, calibration, and certification of walkway tribometers.
1.2 This practice provides a walkway tribometer supplier with a procedure and suite of reference surfaces to validate his walkway tribometer by properly ranking and differentiating the surfaces.
1.3 This practice provides the user of a walkway tribometer with a procedure and suite of reference surfaces to test calibration of his instrument.
1.4 This practice provides a procedure through which an entity may certify a walkway tribometer model, signifying that the walkway tribometer model has a completed and documented validation and interlaboratory study.
1.5 This practice describes the necessary materials, specifications, and the cleaning process for reference materials, as well as the requirements for the validation of a supplier’s walkway tribometer and calibration of a user’s walkway tribometer.
1.6 This practice applies to walkway tribometers without reference to the nature of the scale of the readings produced by them. The scale used in the reports of validation and calibration must be the same, and are to be those of the instrument or defined for the instrument.
1.7 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only and are not considered standard.
1.8 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, health and environmental practices and determine the applicability of regulatory limitations prior to use.
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World T...
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
´1
Designation:F2508 −16 An American National Standard
Standard Practice for
Validation, Calibration, and Certification of Walkway
1
Tribometers Using Reference Surfaces
This standard is issued under the fixed designation F2508; 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
ε NOTE—Editorially corrected footnote 4 in August 2017.
1. Scope priate safety, health and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This practice is intended to establish the procedures for
1.9 This international standard was developed in accor-
validation, calibration, and certification of walkway tribom-
dance with internationally recognized principles on standard-
eters.
ization established in the Decision on Principles for the
1.2 This practice provides a walkway tribometer supplier
Development of International Standards, Guides and Recom-
with a procedure and suite of reference surfaces to validate his
mendations issued by the World Trade Organization Technical
walkwaytribometerbyproperlyrankinganddifferentiatingthe
Barriers to Trade (TBT) Committee.
surfaces.
2. Referenced Documents
1.3 This practice provides the user of a walkway tribometer
2
2.1 ASTM Standards:
with a procedure and suite of reference surfaces to test
D1349 Practice for Rubber—Standard Conditions for Test-
calibration of his instrument.
ing
1.4 This practice provides a procedure through which an
D3244 Practice for Utilization of Test Data to Determine
entity may certify a walkway tribometer model, signifying that
Conformance with Specifications
the walkway tribometer model has a completed and docu-
E691 Practice for Conducting an Interlaboratory Study to
mented validation and interlaboratory study.
Determine the Precision of a Test Method
1.5 This practice describes the necessary materials, F1646 Terminology Relating to Walkway Safety and Foot-
wear
specifications,andthecleaningprocessforreferencematerials,
as well as the requirements for the validation of a supplier’s
3. Terminology
walkway tribometer and calibration of a user’s walkway
3.1 Fortermsusedinthispracticenotidentifiedherein,refer
tribometer.
to Terminology F1646.
1.6 This practice applies to walkway tribometers without
3.2 Definitions:
reference to the nature of the scale of the readings produced by
3.2.1 paired t-test, n—a test of statistical significance based
them.Thescaleusedinthereportsofvalidationandcalibration
on the use of student’s t-distribution and used to compare two
must be the same, and are to be those of the instrument or
sample means (see Annex A2).
defined for the instrument.
3.2.2 supplier, n—any individual, agent, company,
1.7 The values stated in SI units are to be regarded as
manufacturer, or organization responsible for the walkway
standard. The values given in parentheses are for information
tribometer prior to receipt by the user. D3244
only and are not considered standard.
3.2.3 test foot, n—shoe bottom material or surrogate
1.8 This standard does not purport to address all of the
mounted on the walkway tribometer that comes into contact
safety concerns, if any, associated with its use. It is the
with the surface being tested.
responsibility of the user of this standard to establish appro-
3.2.4 walkway tribometer, n—any apparatus used to mea-
sure the frictional forces acting at an interface between a
walkway surface and shoe material.
1
This practice is under the jurisdiction ofASTM Committee F13 on Pedestrian/
Walkway Safety and Footwear and is the direct responsibility of Subcommittee
2
F13.10 on Traction. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2016. Published July 2016. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 2011. Last previous edition approved in 2015 as F2508 – 15. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
F2508-16E01. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
´1
F2508−16
3.2.4.1 Discussion—A judgement of the adequacy of these 4.5 Calibration for a specific walkway tribometer requires a
frictional forces acting on a walkway surface/shoe surface series of 16 tests on each of the reference surfaces from this
interface is the basis f
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.