Appendix F: Critical Fall Height Modes - Triax ASTM F1292 User Manual

CFH (Critical Fall Height modes) calculate the lowest critical fall height. After data is collected,
first order linear regression is used to calculate critical fall height.
RULES: The RULES option will appear after a CFH mode is selected, and saved by pressing
GO BACK. RULES are based on procedural requirements of the necessary standards.
For G+HIC MODES-Based on Table 1 of EN1177:2018 and section 7.4.2
CFH is calculated using both G and HIC, with the lowest value reported as CFH.
G+HIC 1 DROP: Based on EN1177:2018-One (1) drop is done at 4 heights.
G+HIC 3 DROPS: Based on EN1177:2018- Three (3) drops are done at 4 heights.
• OFF: Drops can be done without notification.
• WARNING: A notification will appear if the drop data is outside the Targeted HIC
values, however the user may continue.
• STRICT: A notification will appear if the drop data is outside the Targeted HIC values,
the user will be required to conduct another drop until the is within the Targeted HIC
values.
For HIC MODES-Based on Section 3.4 of World Rugby 22. CFH is calculated using HIC only.
HIC 1 DROP: Based on World Rugby Regulation 22 Procedure B. One (1) drop is done at 4
heights.
HIC 3 DROPS: Based on World Rugby Regulation 22 Procedure A. Three (3) drops are done
at 4 heights
• OFF: Drops can be done without notification.
• WARNING: A notification will appear if drops fall outside parameters stated in World
Rugby 22 section 3.4, however the user may continue.
• STRICT: A notification will appear if drops fall outside parameters stated in World
Rugby 22 section 3.4, the user will be required to conduct another drop until data falls
within these parameters.
APPENDIX F
CRITICAL FALL HEIGHT MODES
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