In order to keep ASTM F2291 harmonized with the EN13814 and ISO TS17929 standards, the G-Force Task Group recommends that Figure 2 be replaced. I have included the old figure and the new figure so you can see the changes. These changes are chiefly: 1.The At rest note has been changed for clarity. 2.The triangular area in Area 1 near (-0.2Gx, +0.7Gz) has been moved from Area 1 to Area 2. 3.The axes labels have been changed from ax and az to Gx and Gz respectively to be consistent with other locations in the standard. 4.The Acceleration label for the Gx axis has been changed to Deceleration.
Keywordsacceleration limits; amusement ride or devices; anti-rollback devices; chain; clearance envelope; containment; control systems; design; electrical; emergency safety device; fasteners; fatigue; fencing; guardrails; hydraulics; impact factor; loads and strengths; mechanical systems; operational hours; pneumatics; restraints; ride analysis; welding; wire rope;
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