Dynamic Lift Load Factors
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Dynamic Lift Load Factors
Hi guys,
I have an a cage that is being hoisted at manufacturing yard with a lift load of 2,000kg (4,400lbs). I am designing the cage to LSD. What dynamic lift factor should I apply to this load to account for the uncertain dynamic effects?
I have refered to the Crane design code for my region and have found load factors to vary between 1.1 to 2.2, depending on the fundamental frequency of the cage and the lift velocity. My previous company used a 1.35 dynamic lift factor based on this code whilst my current employer uses a 1.5 factor but seems that no-one has ever questioned the use of this factor. I am interested to hear how others have handled this problem?
I have an a cage that is being hoisted at manufacturing yard with a lift load of 2,000kg (4,400lbs). I am designing the cage to LSD. What dynamic lift factor should I apply to this load to account for the uncertain dynamic effects?
I have refered to the Crane design code for my region and have found load factors to vary between 1.1 to 2.2, depending on the fundamental frequency of the cage and the lift velocity. My previous company used a 1.35 dynamic lift factor based on this code whilst my current employer uses a 1.5 factor but seems that no-one has ever questioned the use of this factor. I am interested to hear how others have handled this problem?
It is your responsibility to assure that the slings you use are appropriate for your application. Factors you must consider include: Type of hitch/method of rigging; Effect of angle on capacity; Chemical environment compatibility; Protection from load edges; Temperature of load and lift environment; Condition of sling - passes all inspection criteria.