Designation:F472−11StandardTerminologyforGeometryofAlpineSkis1ThisstandardisissuedunderthefixeddesignationF472;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisterminologycoversthetermsrequiredtodescribethegeometryofAlpineskisanddoesnotcoverspecialpurposeskis.1.2Thetermsarepresentedinasequenceconsideredtobethemostlogical,withdefinitionspresentedlatercallinguponthosepresentedearlier.2.SignificanceandUse2.1Astandardsetofdefinitionsisneededtoallowmanufacturers,consumers,retailers,andscientiststouseacommonlanguageindescribingAlpineskis.3.Definitions(RefertoFigs.1and2)skitail,T—theextremerearedgeoftheski.skitip,S—theextremeforwardpointoredgeoftheski.skisize—seethefollowing:developedlength,LN—bottomcontourlengthasmeasuredfromtheskitiptotheskitail,commonlycalledthemateriallength.chordlength,LTS—straightlinedistancemeasuredbetweentheskitailandskitipwiththeskipressedagainstaplanesurface.DISCUSSION—Eithermethodatthemanufacturer’sdiscretionmaybeusedtoindicatenominalskilengthorskisizewhenroundedtocommonincrement.projectedlength,LP—lengthoftheprojectionoftheski,measuredbetweentheskitipandtheskitailparalleltotheskibodypressedagainstaplanesurface.tailturn-uplength,lT—theprojectedlengthofthetailturn-up,measuredfromtheskitailtothecontactpointwherea0.5-mmfeelergaugeintersectstherunningsurfacewiththeskibodypressedagainstaplanesurface.shovellength,lS—theprojectedlengthoftheforwardturn-up,measuredfromthetiptothecontactpointwherea0.5-mmfeelergaugeintersectstherunningsurfacewiththeskibodypressedagainstaplanesurface.contactlength,lC—thedifferencebetweentheprojectedlength,LPandthesumoflTpluslSorlC=LP−(lT+lS).tailheight,hT—theheightoftheundersideofthetailfromaplanesurfacewiththecenteroftheskibodypressedagainstthatsurface.tipheight,hS—theheightoftheundersid...
