Rigging practices course Questions and 100% Verified Correct Answers 2023/2024 A load chart range diagram can best be used to help identify: - Correct Answer net capacity for mobile crane working at maximum radius, exceeding what percentage of the cranes capacity requires the radius to be verified? - Correct Answer 80% the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? - Correct Answer 3/4 in when tying knots in synthetic rope lashing, the rated load is increased by 50% ? - Correct Answer false the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire rope size?
- Correct Answer equal to or greater than
- Correct Answer false
a shackle must be marked with the rated load, re-inspected due date, and the date manufacture? - Correct Answer 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 Answer 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 Answer (50%) a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging equipment?
which of the following operator actions will most likely cause a reduction in the capacity of a mobile crane? - Correct Answer booming down an angular pull of 45 degrees is allowed on non shouldered type eye bolts? - Correct Answer 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 Answer false when are loads allowed to be moved over personnel? - Correct Answer 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 Answer 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 Answer over rigging the load
- / 2
a straight-line hitch is good for _____ of a sling rated load? - Correct Answer 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 Answer 2000 lbs why must hoisting be stopped once the load is completely off the ground? - Correct Answer to determine sling angle stress the minimum crane team consist of ? - Correct Answer the crane operator and rigger-in-charge while traveling a crane with a load, loads should be kept? - Correct Answer as low as possible attachment points must be visually inspected? - Correct Answer before and after each use when rigging your own loads, you are responsible for? - Correct Answer all of the above rigging gear test and inspection records must include: - Correct Answer all of the information listed above