ASTM F3557-22
(Practice)Standard Practice for Field Measurements of Snow Sport Freestyle Terrain Jumps
Standard Practice for Field Measurements of Snow Sport Freestyle Terrain Jumps
SIGNIFICANCE AND USE
5.1 This practice serves the purpose of measuring snow sports freestyle terrain jump features and may be used as a method for recreating jumps in the field or two-dimensional jump profiles of existing jumps.
SCOPE
1.1 This practice is intended to standardize field measurements of existing snow sport freestyle terrain park jumps. It does not cover other types of terrain park features or asymmetric jumps.
1.2 This practice is for measuring jumps that are used in public access snow sport freestyle terrain parks discussed in Terminology F3237.
1.3 For features with multiple takeoffs, each takeoff should be considered as an independent jump and measured according to this practice.
1.4 The depictions and terrain features used in this standard are intended to aid understanding the definitions and methods and are not intended to depict or describe how any particular terrain park jump or its component features should be designed, built or maintained. Some terrain park features may use components that are not depicted or described in this standard, or they may use different configurations or combinations of components, or they may not incorporate all of the components depicted or defined in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with the use of snow sport terrain park features. Snow sports and the use of terrain park features involve inherent risks, and a terrain park feature that complies with all applicable standards or guidelines cannot eliminate all risks associated with terrain park features. Therefore, it is to be clearly understood that compliance with these applicable standards or guidelines in no way guarantees that injury can be prevented.
1.6 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F3557 − 22
Standard Practice for
Field Measurements of Snow Sport Freestyle Terrain
1
Jumps
This standard is issued under the fixed designation F3557; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 This practice is intended to standardize field measure-
mine the applicability of regulatory limitations prior to use.
ments of existing snow sport freestyle terrain park jumps. It
1.8 This international standard was developed in accor-
does not cover other types of terrain park features or asym-
dance with internationally recognized principles on standard-
metric jumps.
ization established in the Decision on Principles for the
1.2 This practice is for measuring jumps that are used in
Development of International Standards, Guides and Recom-
public access snow sport freestyle terrain parks discussed in
mendations issued by the World Trade Organization Technical
Terminology F3237.
Barriers to Trade (TBT) Committee.
1.3 For features with multiple takeoffs, each takeoff should
2. Referenced Documents
be considered as an independent jump and measured according
2
to this practice. 2.1 ASTM Standards:
F3237 Terminology Relating to Snow Sport Freestyle Ter-
1.4 The depictions and terrain features used in this standard
rain Park Jumps
are intended to aid understanding the definitions and methods
and are not intended to depict or describe how any particular
3. Terminology
terrain park jump or its component features should be
3.1 Definitions of terms specific to this practice are con-
designed, built or maintained. Some terrain park features may
tained in Terminology F3237.
use components that are not depicted or described in this
standard, or they may use different configurations or combina-
4. Summary of Practice
tions of components, or they may not incorporate all of the
4.1 The general process for measuring a jump is to identify
components depicted or defined in this standard.
the centerline (typical jumper path) that represents the geom-
1.5 This standard does not purport to address all of the
etry of the jump (see Fig. 1).
safety concerns, if any, associated with the use of snow sport
4.2 Methods:
terrain park features. Snow sports and the use of terrain park
4.2.1 Method A—National Ski Areas Association (NSAA)
features involve inherent risks, and a terrain park feature that
method,
complies with all applicable standards or guidelines cannot
4.2.2 Method B—Digital level,
eliminate all risks associated with terrain park features.
4.2.3 Method C—Differential global positioning system
Therefore, it is to be clearly understood that compliance with
(GPS), and
these applicable standards or guidelines in no way guarantees
4.2.4 Method E—Laser scanner.
that injury can be prevented.
4.3 Choose one of the methods in 4.2.1 – 4.2.4 and the
1.6 Units—The values stated in inch-pound units are to be
3
appendixes to measure:
regarded as the standard. The values given in parentheses are
4.3.1 Approach angle (a-b),
mathematical conversions to SI units that are provided for
4.3.2 Takeoff surface length from zero point to lip (c-d),
information only and are not considered standard.
4.3.3 Takeoff height above zero point (c-d),
1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This practice is under the jurisdiction of ASTM Committee F27 on Snow and Standards volume information, refer to the standard’s Document Summary page on
Water Sports and is the direct responsibility of Subcommittee F27.70 on Freestyle the ASTM website.
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Terrain Jump Features. Certain types of jump features may not contain every component listed above
Current edition approved Nov. 1, 2022. Published December 2022. DOI: and therefore a measurement value may not be obtained or the value obtained may
10.1520/F3557-22. be zero, or both.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3557 − 22
FIG. 1 Field Measurements of Existing Snow Sport Freestyle Terrain Park Jumps
4.3.4 Takeoff height above start of landing (d-h), be
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