ASTM F472-11(R2021) pdf free download

ASTM F472-11(R2021) pdf free download.Standard Terminology for Geometry of Alpine Skis
1. Scope
1.1 This terminology covers the terms required to describe the geometry ofAlpine skis and does not cover special purpose skis. 1.2 The terms are presented in a sequence considered to be the most logical, with definitions presented later calling upon those presented earlier. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Definitions (Refer to Figs. 1 and 2)
ski tail, T—the extreme rear edge of the ski. ski tip, S—the extreme forward point or edge of the ski. ski size—see the following: developed length, L N —bottom contour length as measured from the ski tip to the ski tail, commonly called the material length. chord length, L TS —straight line distance measured between the ski tail and ski tip with the ski pressed against a plane surface. D ISCUSSION —Either method at the manufacturer’s discretion may be used to indicate nominal ski length or ski size when rounded to common increment. projected length, L P —length of the projection of the ski, measured between the ski tip and the ski tail parallel to the ski body pressed against a plane surface. tail turn-up length, l T —the projected length of the tail turn-up, measured from the ski tail to the contact point where a 0.5-mm feeler gauge intersects the running surface with the ski body pressed against a plane surface. shovel length, l S —the projected length of the forward turn-up, measured from the tip to the contact point where a 0.5-mm feeler gauge intersects the running surface with the ski body pressed against a plane surface. contact length, l C —the difference between the projected length, L P and the sum of l T plus l S or l C = L P − (l T + l S ). tail height, h T —the height of the underside of the tail from a plane surface with the center of the ski body pressed against that surface.tip height, h S —the height of the underside of the tip from a plane surface with the center of the ski body pressed against that surface. thickness, t—thickness, measured perpendicular to the running surface. X A indicates the location of thickness measurement from the tail of the ski. width, b—total distance measured perpendicular to the center line on the running surface. X b indicates the location of ski width from the tail of the ski. heel, b H —the widest part ofthe ski in the tail section ofthe ski. waist, b M —the narrowest point of the ski body between the heel and shoulder. shoulder, b V —the widest point, of the ski in the shovel section of the ski. X bH , X bM , X bV —the x coordinates for the location of these respective widths ofthe ski measured from the tail ofthe ski.camber height, h—distance between the running surface of the ski and a plane surface, measured with the ski resting freely under its own mass. X h indicates the location of camber height from the tail of the ski. weighted bottom camber, h B —the maximum height of the running surface measured from a plane horizontal surface, with the ski held in a plane horizontal orientation and thus subject to deflection due to its weight under the influence of the ski weight. X hB is the location of h B from the tail of the ski. free bottom camber, h F —the maximum height of the running surface measured from a plane vertical surface with the ski on an edge, free from the deflection caused by its weight. X hF is the location of h F from the tail of the ski. (Not shown in Fig. 1 or Fig. 2.)