In order to keep ASTM F2291 harmonized with EN13814 and the ISO TS17929 standards, the G-Force Task Group recommends that Figures 6 through 10 be changed to combine corresponding positive and negative axes into single graphs. They are currently presented in the standard in separate figures. Please note that this ballot item does not contain any changes to the acceleration-duration limits or their requirements. This was previously balloted and some formatting errors were found on the ballot. It is being re-balloted.
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;
Ballot Item Approved as F2291-2017 and Pending Publication