Rigging practices Questions with Correct Answers 100% Verified A load chart range diagram can best be used to help identify: - Correct Answers net capacity for mobile crane working at maximum radius, exceeding what percentage of the cranes capacity requires the radius to be verified? - Correct Answers 80% the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? - Correct Answers 3/4 in when tying knots in synthetic rope lashing, the rated load is increased by 50% ? - Correct Answers false the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire rope size? - Correct Answers equal to or greater than a shackle must be marked with the rated load, re-inspected due date, and the date manufacture? - Correct Answers false when working near energized power lines where the crane or load could cross the absolute limit of approach, what additional requirements must the crane team follow? - Correct Answers designated spotter must be stationed to watch clearances the load weight of a personnel lift must not exceed _____ of the hoists rated capacity for the working radius ? - Correct Answers (50%) a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging equipment? - Correct Answers false which of the following operator actions will most likely cause a reduction in the capacity of a mobile crane? - Correct Answers booming down an angular pull of 45 degrees is allowed on non shouldered type eye bolts? - Correct Answers false 1 / 2
two slings creating a 60 degree sling angle are used to lift a 4,000 pound item. the appropriate rated load for each sling is 2,000 pounds. - Correct Answers false when are loads allowed to be moved over personnel? - Correct Answers never given a 1/2 in steel walled empty cylindrical tank that is opened at one end, calculate its weight (round answer to the nearest hundred) - Correct Answers 1800 lbs a crane accident occurs when any one of the elements in the crane operating envelope fails to perform correctly during crane operations, maintenance, or testing, which results in any of the
following except: - Correct Answers over rigging the load
a straight-line hitch is good for _____ of a sling rated load? - Correct Answers 100% there are three slings hanging from a hook. each sling has a rated capacity of 2,000 lbs. what is the heaviest load that could be lifted using these slings if they were attached to a single point - Correct Answers 2000 lbs why must hoisting be stopped once the load is completely off the ground? - Correct Answers to determine sling angle stress the minimum crane team consist of ? - Correct Answers the crane operator and rigger-in-charge while traveling a crane with a load, loads should be kept? - Correct Answers as low as possible attachment points must be visually inspected? - Correct Answers before and after each use when rigging your own loads, you are responsible for? - Correct Answers all of the above rigging gear test and inspection records must include: - Correct Answers all of the information listed above the crane operator is responsible for the safe _____ of the crane - Correct Answers operation
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