ASTM_D_5859_-_96e1.pdf

Designation:D 5859 96e1An American National StandardStandard Test Method forDetermining the Traction of Footwear on Painted SurfacesUsing the Variable Incidence Tester1This standard is issued under the fixed designation D 5859;the number immediately following the designation indicates the year oforiginal adoption or,in the 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.e1NOTEPer Committee F13 Bylaws,editorially replaced term definitions with reference to Terminology F 1646 in January2004.1.Scope1.1 This test method covers the measurement of the tractionof footwear on painted walkway surfaces under both dry andwet conditions in the laboratory and the field.1.2 The values stated in inch-pound units are to be regardedas the standard.The SI values given in parentheses areprovided for information only.1.3 This test method does not purport to address 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:F 1646 Terminology Relating to Safety and Traction forFootwear23.Terminology3.1 See Terminology F 1646 for the following terms used inthis test method:3.1.1 Friction,and3.1.2 Coefficient of friction.4.Summary of Test Method4.1 The variable incidence tester,shown in Fig.1,3operatesindependent of gravity and is self-powered by a miniaturecarbon dioxide cartridge.It uses an articulated strut but differsfrom the James and Hunter machines.Its fluidics actuationapplies the load to a slider shoe instantaneously,therebyovercoming the well-known“stiction”problem that arises fromthe delay between the time the slider is set down onto thesurface and the time it starts to slip.4.2 As the test progresses,the shoe descends,makes contactwith the substrate,and continues to be subjected to the constantvertical load,in addition to an increasing horizontal or tangen-tial load,until slip occurs.The tangent of the angle that thetester makes with respect to the vertical,at the instant of slip,is taken to be the ratio of the horizontal and vertical compo-nents of the force applied to the shoe and thus the coefficient offriction.4.3 When slippage occurs,the strut will kick out in an arc.The angle at which slippage just begins to occur,which is readfrom the protractor scale,is the slip index or the staticcoefficient of friction.5.Significance and Use5.1 The variable incidence tester3is a laboratory and fieldinstrument designed to measure the slip resistance of paint orrelated materials to determine their traction properties in a1This test method is under the jurisdiction of ASTM Committee F13 on Safetyand Traction for Footwear and is the direct responsibility of Subcommittee F13.10on Traction.Current edition approved April 10,1996.Published June 1996.2For 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 standards Document Summary page onthe ASTM website.3The English XL,is covered by a patent held by William English and is availablefrom William English,Inc.,20500 North River Rd.,Alva,FL 33920.It has beenfound suitable for this use.Interested parties are invited to submit informationregarding the identification of acceptable alternatives to this patented item to theCommittee on Standards,ASTM Headquarters,100 Barr Harbor Dr.,West Consho-hocken,PA 19428-2959.Your comments will receive careful consideration at ameeting of the responsible technical committee,which you may attend.FIG.1 Variable Incidence Tester1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.clean and dry state or in the presence of environmentalcontaminants encountered in situ.5.2 The indication of this test apparatus is believed to relateslip resistance of the surface tested in the test environment.Itdoes not contemplate floor materials,characteristics of indi-vidual human gaits,and other factors besides the floor surfaceconditions.5.3 The relative slip resistance of a floor surface may bemeasured under wet or dry conditions or in the presence ofother environmental contaminants using the specific footassembly.6.Apparatus6.1 Variable Incidence Tester3The tester is constructed asfollows:6.1.1 ChassisA rigid welded aluminum frame fabricatedfrom38by 1-in.(9 by 25-mm)flat bar fitted with threeslip-resistant feet that rest on the test surface.6.1.2 Mast AssemblyA rigid welded aluminum framefabricated from14by 1-in.(6 by 25-mm)flat bar attached tothe chassis with a hinge joint that permits it to be inclined fromvertical 90 to 45.6.1.3 HandleA 1-in.(25-mm)diameter aluminum tubebolted to the top of the mast assembly that can be used t