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Rigging
practices with
100% correct
answers
net capacity - answer A load chart range diagram can best be used to help identify: 80% - answer for mobile crane working at maximum radius, exceeding what percentage of the cranes capacity requires the radius to be verified? 3/4 in - answer the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? false - answer when tying knots in synthetic rope lashing, the rated load is increased by 50%? equal to or greater than - answer the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire rope size?
false - answer a shackle must be marked with the rated load, re- inspected due date, and the date manufacture? designated spotter must be stationed to watch clearances - answer 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? (50%) - answer the load weight of a personnel lift must not exceed _____ of the hoists rated capacity for the working radius? false - answer a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging equipment? booming down - answer which of the following operator actions will most likely cause a reduction in the capacity of a mobile crane? false - answer an angular pull of 45 degrees is allowed on non shouldered type eye bolts? false - answer 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. never - answer when are loads allowed to be moved over personnel?
all of the above - answer when rigging your own loads, you are responsible for? all of the information listed above - answer rigging gear test and inspection records must include: operation - answer the crane operator is responsible for the safe _____ of the crane notify the operator and work cautiously near the obstruction - answer if a crane team member sees an obstruction in the crane operating envelope that could pose a threat to the crane operations, what course of action is the best to take? 20ft - answer what is the minimum distance any part of the crane or load may approach an energized power line under 50,000 volts during a proposed operation? complex and non complex - answer according to the NAVFAC P- 307, what are the two types of crane lifts? 2 - answer when making a four-point lift using slings, they should normally be chosen such that _____ legs have/has the capacity to support the entire load weight including the additional stress due to lifting angle. 9.42 - answer the volume of the cylinder is ______ cubic feet 1607 - answer calculate the tension in leg A
decreases - answer increasing the sling angle from horizontal _______ the stress in the sling? distance they are from the CG - answer weight distribution at the attachment points is determined by measuring the... personnel error - answer to whom or what are the majority of crane accidents attributed? 27x105=2,835+1,200= 4,035 lbs - answer a box has 27 cubic ft of sand in it. sand weighs 105 lbs per cubic ft. the box weighs 1,200 lbs empty. the correct equation to find the total weight is? establish the method of communications and provides a signal to the operator - answer according to the NAVFAC P-307, which of the following is a primary responsibility of the rigger in charge smaller than - answer never bend a wire rope around a diameter _______ itself swivel hoist rings - answer which of the following attachment points can be used at full capacity when pulled at any angle from vertical? true - answer the rated load of shouldered eyebolts must be reduced at angular pulls?
false - answer a pre-job briefing is not required prior to performing a complex lift? true - answer natural fiber rope slings are not to be used for overhead lifting? true - answer anti-two block devices are operational safety devices that can fail and must not be relied upon to stop movement of the hoist? false - answer there is no difference in capacity between category 2 and category 3 cranes routinely lifting submerged parts out of dip tank - answer which of the following is an acceptable crane operating practice? so documentation can be completed - answer pre-use inspections on rigging gear are performed for all of the following reasons except? periodically - answer what type of rigging gear inspections require documentation removed from service - answer distorted or twisted rigging hardware must be decreased - answer when a sling is used in a choker configuration, its capacity is
shackles - answer what should be used when attaching rigging gear to padeyes and lifting lugs non-destructive testing - answer removal of cracks from rigging hardware must be verified by ____ before it is returning to service? complex lift - answer a crane with capacity of 100,000 lbs is performing a lift of 90,000 lbs is an? rigger - answer a _____ may be assigned by the rigger-in-charge to assist the operator with the pre-use check, select and inspect rigging gear and rig loads round pin shackle - answer which of the following shackles must never be side loaded? the manufacturer, model number, rated load, and re-inspection due date - answer what markings are required on hoists hooks - answer when moving a truck, cruiser, or crawler crane to and from job sites, always secure the ______ to the carrier frame? c - answer the signal indicated which hook on multiple hoist cranes b - answer the signal for stop category 3 - answer the category for this crane (20000k)
