Rigging Practices Course Questions and Answers 100% Pass

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Rigging Practices Course Questions and Answers 100% Pass A load chart range diagram can best be used to help identify: ✔✔net capacity for mobile crane working at maximum radius, exceeding what ... percentage of the cranes capacity requires the radius to be verified? ✔✔80% the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? ✔✔3/4 in when tying knots in synthetic rope lashing, the rated load is increased by 50% ? ✔✔false the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire rope size? ✔✔equal to or greater than a shackle must be marked with the rated load, re-inspected due date, and the date manufacture? ✔✔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? ✔✔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 ? ✔✔(50%) a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging equipment? ✔✔false which of the following operator actions will most likely cause a reduction in the capacity of a mobile crane? ✔✔booming down an angular pull of 45 degrees is allowed on non shouldered type eye bolts? ✔✔false 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. ✔✔false when are loads allowed to be moved over personnel? ✔✔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) ✔✔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: ✔✔over rigging the load a straight-line hitch is good for _____ of a sling rated load? ✔✔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 ✔✔2000 lbs why must hoisting be stopped once the load is completely off the ground? ✔✔to determine sling angle stress the minimum crane team consist of ? ✔✔the crane operator and rigger-in-charge while traveling a crane with a load, loads should be kept? ✔✔as low as possible attachment points must be visually inspected? ✔✔before and after each use when rigging your own loads, you are responsible for? ✔✔all of the above rigging gear test and inspection records must include: ✔✔all of the information listed above the crane operator is responsible for the safe _____ of the crane ✔✔operation 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? ✔✔notify the operator and work cautiously near the obstruction 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? ✔✔20ft according to the NAVFAC P-307, what are the two types of crane lifts ? ✔✔complex and non complex 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. ✔✔2 the volume of the cylinder is ______ cubic feet ✔✔9.42 calculate the tension in leg A ✔✔1607 increasing the sling angle from horizontal _______ the stress in the sling? ✔✔decreases weight distribution at the attachment points is determined by measuring the... ✔✔distance they are from the CG to whom or what are the majority of crane accidents attributed? ✔✔personnel error 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? ✔✔27x105=2,835+1,200= 4,035 lbs according to the NAVFAC P-307, which of the following is a primary responsibility of the rigger in charge ✔✔establish the method of communications and provides a signal to the operator never bend a wire rope around a diameter _______ itself ✔✔smaller than which of the following attachment points can be used at full capacity when pulled at any angle from vertical? ✔✔swivel hoist rings the rated load of shouldered eyebolts must be reduced at angular pulls? ✔✔true lifts of materials such as oxygen, acetylene, propane, or gasoline in bottles, cans, tanks, or properly secured in racks designed for lifting by a crane are considered ? ✔✔complex lift the area of this triangle with dimensions givens in feet is: ✔✔24 square feet gross capacity on a load chart refers to the amount of weight that can be lifted by the crane ✔✔before deductions are subtracted two people should be used to pull the hand chain of a manual chain hoist when it gets too hard for on person to pull. ✔✔false the goal of the rigging gear test and inspection program is to prevent personnel injury ✔✔identify sub-standard equipment what is the best way to prevent a load from swinging when it is lifted using a crane or a hoist ✔✔center the hook over the CG of the load if you have an accident with a crane or you find damage and suspect an accident has happened, your first step is to? ✔✔stop operations as soon as safely possible in general, you should never place the eye of the wire rope sling around an object that has a diameter greater than ✔✔1/2 a pre-job briefing is not required prior to performing a complex lift? ✔✔false natural fiber rope slings are not to be used for overhead lifting? ✔✔true anti-two block devices are operational safety devices that can fail and must not be relied upon to stop movement of the hoist? ✔✔true there is no difference in capacity between category 2 and category 3 cranes ✔✔false which of the following is an acceptable crane operating practice? ✔✔routinely lifting submerged parts out of dip tank pre-use inspections on rigging gear are performed for all of the following reasons except? ✔✔so documentation can be completed what type of rigging gear inspections require documentation ✔✔periodically distorted or twisted rigging hardware must be ✔✔removed from service when a sling is used in a choker configuration, its capacity is ✔✔decreased what should be used when attaching rigging gear to padeyes and lifting lugs ✔✔shackles removal of cracks from rigging hardware must be verified by ____ before it is returning to service? ✔✔non-destructive testing a crane with capacity of 100,000 lbs is performing a lift of 90,000 lbs is an? ✔✔complex lift 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 ✔✔rigger which of the following shackles must never be side loaded? ✔✔round pin shackle what markings are required on hoists ✔✔the manufacturer, model number, rated load, and reinspection due date when moving a truck, cruiser, or crawler crane to and from job sites, always secure the ______ to the carrier frame? ✔✔hooks the signal indicated which hook on multiple hoist cranes ✔✔c the signal for stop ✔✔b the category for this crane (20000k) ✔✔category 3 the signal for lower boom ✔✔b the signal for hoist ✔✔a signal for boom up and lower hoist ✔✔c signal for move slow ✔✔e signal for boom down and raise hoist ✔✔d signal for travel ✔✔b category of crane (white truck) ✔✔category 4 the signal for lowering ✔✔a the category of crane (yellow truck) ✔✔a category 1 signal for emergency stop ✔✔d signal for trolley ✔✔c [Show More]

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