ASTM F472-11

Standard Terminology for Geometry of Alpine Skis

SIGNIFICANCE AND USE
A standard set of definitions is needed to allow manufacturers, consumers, retailers, and scientists to use a common language in describing Alpine skis.
SCOPE
1.1 This terminology covers the terms required to describe the geometry of Alpine 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.

General Information

• Status: Historical
• Publication Date: 14-Jul-2011
• ICS: 97.220.20 - Winter sports equipment
• Technical Committee: F27 - Snow and Water Sports
• Drafting Committee: F27.30 - Skiing and Snowboarding Equipment

Relations

• Replaces: ASTM F472-92(2006) - Standard Terminology for Geometry of Alpine Skis
• Effective Date: 15-Jul-2011
• Referred By: ASTM F473-09(2017) - Standard Specification for Binding Mounting Area Dimensions on Alpine Skis and Bindings
• Effective Date: 15-Jul-2011
• Referred By: ASTM F1722-15(2021) - Standard Test Method for Determining Mass and Moment of Inertia of Alpine Skis
• Effective Date: 15-Jul-2011
• Referred By: ASTM F780-93a(2018) - Standard Test Method for Linear Deformation and Breaking Strength of Alpine Skis
• Effective Date: 15-Jul-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F472 − 11
Standard Terminology for
1
Geometry of Alpine Skis
ThisstandardisissuedunderthefixeddesignationF472;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope feeler gauge intersects the running surface with the ski body
pressed against a plane surface.
1.1 This terminology covers the terms required to describe
thegeometryofAlpineskisanddoesnotcoverspecialpurpose
contact length, l —the difference between the projected
C
skis.
length, L and the sum of l plus l or l =L −(l + l ).
P T S C P T S
1.2 The terms are presented in a sequence considered to be
tail height, h —the height of the underside of the tail from a
T
the most logical, with definitions presented later calling upon
plane surface with the center of the ski body pressed against
those presented earlier.
that surface.
2. Significance and Use
tip height, h —the height of the underside of the tip from a
S
2.1 A standard set of definitions is needed to allow plane surface with the center of the ski body pressed against
manufacturers, consumers, retailers, and scientists to use a
that surface.
common language in describing Alpine skis.
thickness,t—thickness,measuredperpendiculartotherunning
3. Definitions (Refer to Figs. 1 and 2)
surface. X indicates the location of thickness measurement
A
from the tail of the ski.
ski tail, T—the extreme rear edge of the ski.
width, b—total distance measured perpendicular to the center
ski tip, S—the extreme forward point or edge of the ski.
line on the running surface. X indicates the location of ski
b
ski size—see the following: width from the tail of the ski.
developed length, L —bottom contour length as measured
N
heel,b —thewidestpartoftheskiinthetailsectionoftheski.
H
from the ski tip to the ski tail, commonly called the material
waist, b —the narrowest point of the ski body between the
length.
M
heel and shoulder.
chord length, L —straight line distance measured between
TS
the ski tail and ski tip with the ski pressed against a plane
shoulder,b —the widest point, of the ski in the shovel section
V
surface.
of the ski.
DISCUSSION—Either method at the manufacturer’s discretion may be
X ,X ,X —the x coordinates for the location of these
bH bM bV
used to indicate nominal ski length or ski size when rounded to
respectivewidthsoftheskimeasuredfromthetailoftheski.
common increment.
contact surface area—the product of the average width times
projected length, L —length of the projection of the ski,
P
the contact length expressed quantitatively as follows:
measured between the ski tip and the ski tail parallel to the
ski body pressed against a plane surface. b 12 b 1b
~ !
H M V
A 5 @l # (1)
F G
C C
4
tail turn-up length, l —the projected length of the tail
T
turn-up,measuredfromtheskitailtothecontactpointwhere
tail surface area—that surface from the tail contact point aft.
a0.5-mmfeelergaugeintersectstherunningsurfacewiththe
The tail contact point is located l from the tail.
T
ski body pressed against a plane surface.
shovel surface area—that surface forward of the shovel
shovel length,l —the projected length of the forward turn-up,
S contact point. The shovel contact point is located at l from
S
measured from the tip to the contact point where a 0.5-mm
the tip.
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:F472–92 (Reapproved 2006) Designation: F472 – 11
Standard Terminology for
1
Geometry of Alpine Skis
ThisstandardisissuedunderthefixeddesignationF472;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
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.
2. Significance and Use
2.1 Astandardsetofdefinitionsisneededtoallowmanufacturers,consumers,retailers,andscientiststouseacommonlanguage
in describing Alpine skis.
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 —bottom contour length as measured from the ski tip to the ski tail, commonly called the material length.
N
chord length, L —straight line distance measured between the ski tail and ski tip with the ski pressed against a plane surface.
TS
DISCUSSION—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 —length of the projection of the ski, measured between the ski tip and the ski tail parallel to the ski body
P
pressed against a plane surface.
tail turn-up length, l —the projected length of the tail turn-up, measured from the ski tail to the contact point where a 0.5-mm
T
feeler gauge intersects the running surface with the ski body pressed against a plane surface.
shovel length, l —the projected length of the forward turn-up, measured from the tip to the contact point where a 0.5-mm feeler
S
gauge intersects the running surface with the ski body pressed against a plane surface.
contact length, l —the difference between the projected length, L and the sum of l plus l or l =L −( l + l ).
C P T S C P T S
tail height, h —the height of the underside of the tail from a plane surface with the center of the ski body pressed against that
T
surface.
tip height, h —the height of the underside of the tip from a plane surface with the center of the ski body pressed against that
S
surface.
thickness, t—thickness, measured perpendicular to the running surface. X indicates the location of thickness measurement from
A
the tail of the ski.
width, b—total distance measured perpendicular to the center line on the running surface. X indicates the location of ski width
b
from the tail of the ski.
heel, b —the widest part of the ski in the tail section of the ski.
H
waist, b —the narrowest point of the ski body between the heel and shoulder.
M
shoulder, b —the widest point, of the ski in the shovel section of the ski.
V
X ,X ,X —the x coordinates for the location of these respective widths of the ski measured from the tail of the ski.
bH bM bV
contact surface area—the product of the average width times the contact length expressed quantitatively as follows:
1
This terminology is under the jurisdiction of ASTM Committee F27 on Snow Skiing and is the direct responsibility of Subcommittee F27.30 on Skis and Boots.
Current edition approved Oct. 1, 2006. Published December 2006. Originally approved in 1976. Last previous edition approved in 1998 as F472–92 (1998). DOI:
10.1520/F0472-92R06.
Current edition approved July 15, 2011. Published August 2011. Originally approved in 1976. Last previous edition approved in 2006 as F472–92 (2006). DOI:
10.1520/F0472-11.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F472 – 11
FIG. 1 Alpine Ski Locations
FIG. 2 Alpine Ski
~b 12b 1b !
H M V
A 5 [l # (1)
F G
C C
4
tail surface area—that surface from the tail contact point aft. The tail contact point is located l from the tail.
T
shovel surface area—that surface forward of the shovel contact point. The shovel contact point is located at l from the tip.
S
running surface—the entire bottom surface of the ski bordered by the side geometry.
side geometry—the configuration of the curve bordering the running surface and defined by the bottom edge.
side cut—that line describing the curved portion of the ski contour limited by the lines
...