ASTM_F_1678_-_96.pdf

Designation:F 1678 96An American National StandardStandard Test Method forUsing a Portable Articulated Strut Slip Tester(PAST)1This standard is issued under the fixed designation F 1678;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.1.Scope1.1 This test method covers the operational procedures forusing a portable articulated strut slip tester(PAST)for deter-mining the slip resistance of footwear sole,heel,or relatedmaterials(test feet)against planar walkway surfaces or walk-way surrogates(test surfaces)in either the laboratory or fieldunder dry conditions.This test method does not address allmethodological issues(for example,test surface and test footmaterial selection and preparation,experimental design,orreport preparation).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 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 DefinitionsFor definitions of terms,refer to Terminol-ogy F 1646.4.Significance and Use4.1 The PAST3is a tribometer designed to determine theslip resistance of footwear materials,walkway surfaces,orsurrogates under field or laboratory conditions so that theirslip-resistant qualities may be evaluated.4.2 The measurement made by this apparatus relates to slipresistance and the static coefficient of friction.Other factorscan affect slip resistance.When this test method is used in fieldtests,relevant factors shall be described.5.Apparatus5.1 Portable Articulated Strut TribometerSee Fig.1.5.2 Main Components:5.2.1 Frame,aluminum,U-shaped(a).5.2.2 Carriage Rails,two,steel,horizontal(b).5.2.3 Carriage,aluminum(c).5.2.4 Weight,cast steel(d).5.2.5 Articulated Strut,aluminum,ladder shaped(e).5.2.6 Trigger,steel(f).5.2.7 Trigger Adjustment Knob and Adjustment LockKnob(g).5.2.8 Trigger Stop(h).5.2.9 Measuring Rod,steel,cylindrical,graduated(i).5.2.10 Measuring Rod Index Mark,brass(j).5.2.11 Test Foot Holder,magnetic(k).5.2.12 Spring Collars(l).5.2.13 Spacer,0.5 in.(13 mm)(not shown).6.Test Foot and Test Surface6.1 Test Foot:6.1.1 The test foot4is prepared by fastening a sample,typically 3 by 3 in.2(76.2 by 76.2 mm2),of the test footmaterial,appropriate side exposed,using a suitable adhesive,such as double-stick tape.6.1.2 The test foot is placed on the test foot holder,where itis held in place by magnetic attraction.6.2 Test SurfaceThe floor surface specimens5shall not beless than 4 by 4 in.(10.16 by 10.16 cm)and should besurrounded by enough material of similar thickness or placedin a suitable fixture so that the tribometer feet will be at thesame elevation as the top of the specimen.The test footmaterial shall fit within the area of the test surface.1This test method is under the jurisdiction of ASTM Committee F-13 on Safetyand Traction for Footwear and is the direct responsibility of Subcommittee F13.10on Traction.Current edition approved February 10,1996.Published May 1996.2Annual Book of ASTM Standards,Vol 15.07.3The portable articulated strut slip tester(PAST)was developed by Dr.RobertBrungraber of Bucknell University,Lewisburg,PA.The PAST is covered by a patentheld by Slip-Test and is available from P.O.Box 387,Spring Lake,NJ 07762.It hasbeen found 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 Drive,WestConshohocken,PA 19428-2959.Your comments will receive careful considerationat a meeting of the responsible technical committee,which you may attend.4The most convenient test foot material shape is a 3 in.2(76.2 mm2),but if adifferent shape is desired it must be symmetrical with respect to the center line in thedirection of testing and have some material at the front and rear edges of the test footclip.This allows testing at various contact pressures.5Floor surface materials of sizes smaller than 4 by 4 in.(100 by 100 mm)maybe combined in a matrix to create a surface area at least 4 by 4 in.(100 by 100 mm)in size.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.7.Reagents and Materials7.1 Double-Stick Tape.7.2 Ivory Dishwashing Liquid Soap.7.3 Medical Grade Silicone Elastomer6Test Foot,112by314in.(38 by 76 by 6 mm).7.4 Sheet of Plate Glass,8 by 8 by14in.(203 by 203 by 6mm).8.Tribometer Calibration8.1