1. Rationale
In July of 2003, the design standard (now known as F-2291) was successfully balloted, approved and published. At that time, a very specific exception was included only for the design of portable rides and devices. This specific exemption only affects the design of new Portable Rides, and furthermore the exemption only affects the design with respect to section 8.30 Fatigue Material Allowable Properties. This specific exemption does not affect any of the other applicable F-2291 requirements for all amusement rides or devices. The specific exemption 8.30.2 allowed the Designer/Engineer to use F-1159 to select fatigue data and material allowables for the materials used in the design of portable rides and devices. In addition, a Note was added in this section notifying users of the standard that the F-24 Strength and Loads Task Group would continue to review the need for this exemption. The F-24 Strengths and Loads Sub task Group has completed its review of this exemption and is recommending this single exemption be deleted. Elimination of this specific exemption will mean the Designer/ Engineer of new portable rides and devices will now use the same existing requirement already in F-2291 section 8.30 for all applicable amusement rides and devices. Elimination of this exemption will not effect amusement rides and devices that are considered Service Proven. Three negative ballots received in December 2011 correctly pointed out that in addition to the deletion of 8.30.2, one additional correction must be made in the wording of 8.30.1 so portable rides and devices are included in the overall requirements of 8.30. This addition correction to 8.30.1, now captures fixed, permanent and portable rides and devices.
Keywords
acceleration 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; Amusement rides/devices; Design--consumer products/applications;
Citing ASTM Standards
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