Rigging Test Questions and Answers Already Graded A

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Rigging Test Questions and Answers Already Graded A a signal person must be provided when the point of operation, meaning the load travel or the area near or at load placement is not in full view o... f the: ✔✔operator when the equipment is travelling and the view in the direction of travel is obstructed, a ____________ must be provided ✔✔dedicated spotter For each signal, prior to giving the function/direction, the signal person must: ✔✔notify the crane who the signal is for When non-standard signals are used, the following people must contact each other prior to the lift operation and agree upon the non-standard signals which are going to be used: ✔✔signal person, operator, lift director which of the following are the three required elements of a voice signal? ✔✔distance, function, direction How many persons may share a dedicated channel for the purpose of coordinating operations? ✔✔as many as are required per the lift plan which of the following are set to give the operator sufficient warning to prevent encroachment of power lines? ✔✔proximity alarms when using electronic transmission devices, the transmitted signal must be: ✔✔effective, clear, and reliable to ensure that correct sling angles are maintained during choker hitch use, the sling may have: ✔✔blocks installed at contact points A turnbuckle to be used in hoisting or rigging operations should be of what type construction? ✔✔jaw and weldless eye the attached drawing illustrates a device for adjustment of load and is termed a: ✔✔turnbuckle when lifting an object that is of irregular shape, you must always: ✔✔find the center of gravity who is allowed to design a new signal system? ✔✔the operator and signal person en an a new signal system be used? ✔✔site conditions preclude the use of hand, voice, or audio systems who determines if a new signal system is suitable? ✔✔the operator, signal person, and lift director what must be demonstrated prior to the use of a new signal system? ✔✔the new signal system is at least equally effective communication as the standard system being replaced some manufactures of carrier-mounted lattice boom cranes offer optional _________ attachments for their machines ✔✔tower the ___________ is the main structural member of an over head crane used to span the width of the runway area ✔✔bridge any overhead crane consists of three basic units; the bridge, trolley, and: ✔✔hoist carrier-mounted lattice boom cranes are also commonly referred to as __________ cranes. ✔✔crawler the crane is said to be in a particular quadrant of operation when the ______________ is located over that area ✔✔load hook in addition to using flags and barricades to show the work zone near power lines, the employer can define the work zone area ________ degrees around the equipment up to the equipment's maximum working radius ✔✔360 two-blocking occurs when the ___________ or headache ball makes contact with the sheaves at the boom tip ✔✔block industrial cranes have _____________ centers of gravity to permit operation in narrow aisles or runways without outriggers ✔✔low high wind speed acting on the __________ of the boom can cause it to topple backward if it is at a high boom angle ✔✔front whenever anything is lifted or raised from a horizontal position to a vertical position, the crane load will be equal to _________ the weight of the object until the object is vertical and clears the ground ✔✔100% as a crane starts to tip, the load _________ begins to increase. This increases the load's leverage on the crane and the tipping force ✔✔radius rotation of the upper works changes the location of the crane's: ✔✔center of gravity critical lifts are those where the load weight is close to the rated capacity of the crane. When the lifting load weighs more than 75% of the rated capacity, or when lifts involve two or more cranes, be sure to check the boom: ✔✔angle the leverage the crane exerts on the load changes as it: ✔✔stops when making a vertical lift using a four-point hookup, how many sling legs are assumed to be supporting the load? ✔✔three when performing a load inversion, under ideal conditions, the heavy end of the load should be: ✔✔lowered the single greatest cause for fatalities in crane accident is: ✔✔underestimating load weight what potential hazard is associated with lifting/moving a load secured with hand chain hoist/lever hoist? ✔✔unsecured load and loose chains one of the steps in a rigging planning session is to determine the stability of the load based upon the rigging attachment points associated with its center of gravity. Why is this an important planning step? ✔✔you know what the load will do in terms of movement when it is picked up four essential elements in a rigging pre-job inspection: 1. Reference documents for specific manufacture information including the weight, plant requirements and safety procedures. 2. Examine the load for structural stability, center of gravity, and attachment point. 3. List, collect, and inspect the equipment and material needed. 4. _____________________ ✔✔identify the load path A three-point hook up is being used to lift 800 Lbs. using a spreader bar such that the legs are at 30-degrees off vertical. With each leg carrying an equal load, what is the stress on each sling? ✔✔3080 Ibs. when evaluating a load path, it is necessary to know the: ✔✔clearances available around equipment which reference should be the final authority in determining rigging specifications on a piece of equipment? ✔✔vendor technical manual rigging specifications for a specific piece of equipment may be found in" ✔✔vendor technical manual if the equipment you are working on has a written procedure for performing a lift and you find it differs from the manufacturer's specifications for lifting, you should: ✔✔stop the job, get clarification, and a procedure change if a two-leg sling attachment is used to lift a long load of flexible material, the load may: ✔✔Buckle in the middle Per ASME Standard, fiber core wire rope slings of all grades shall not be exposed to temperatures in excess of what degree F (degree C)? ✔✔194(90) Shackles with screw pins are sized by the: ✔✔diameter of steel in the bow section Hook inspections shall include: ✔✔cracks and point twist while inspecting shackles prior to use, any: ✔✔shackles with damaged threads should not be used when a wire rope is bent around an object whose diameter is equal to the diameter of the wire rope load capacity of the wire rope: ✔✔is reduced A turnbuckle is used to: ✔✔adjust sling length what type of hitch produces a 360-degree contact with the load and tightens as the lift takes place? ✔✔double wrap choker hitch knots shall not be used to configure synthetic rope slings because knots: ✔✔significantly reduce the strength of synthetic rope slings a shoulder type eyebolt must be used when you need to: ✔✔put an angular pull on an eyebolt the ________________ is used to join two wet ropes: ✔✔double sheet bend If the center of gravity (cg) shifts during the lifting of an equally balanced (2) pick load, the pick point nearest the cg will: ✔✔increase in load in a basket hitch the capacity of the sling will be: ✔✔200% SWL Per ASME standard nylon and polyester slings shall NOT be used in contact with temperatures in excess of what degrees F (degree C)? ✔✔194 (90) a knot that is used to form a loop at any point in the rope between its ends is called a: ✔✔bowline in a bight The term that applies to the size of a block sheave relative to the size of the rope running through it is: ✔✔D/d ratio when spooling wire rope onto a tugger, what is the correct procedure? ✔✔wind an overwound drum from the opposite top side of the spool which friction reducing tool has the least amount of friction? ✔✔air bearings which friction reducing tool is constructed using a series of rollers attached to a chain on each side? ✔✔caterpillar dollies Given the attached drawing, determine the minimum thread engagement for the 3/8" eyebolt per the attached load ✔✔1/2" what is the main purpose of a spreader bar? ✔✔distribute the load of a lift across more than one point Knots tied in synthetic web slings or wire rope slings reduce the SWL (safe work limit) by approximately 50% and therefore should: ✔✔be removed from service what should be done with slings when they are "taken out of service"? ✔✔Remove the capacity tag Never saddle a dead horse is a phrase that refers to: ✔✔wire rope clips what feature should hooks have to retain slings and lifting attachments? ✔✔safety latch A four-point hook up is being used to lift 4000 Ibs. using a spreader bar such that the legs are vertical with exact same length slings. With each leg carrying an equal load, what is the stress on each sling? ✔✔1000 Ibs. what is used to prevent the load from being crushed by the squeezing action of the slings upon lifting? ✔✔spreader bar why is a spreader bar used in a rigging operation? ✔✔to prevent the slings from crushing the load when is a lifting beam used? ✔✔when the center of gravity of the load is offset to one side of the road which of the following is UNACCEPTABLE for determining load weight? ✔✔lift load and determine stress/strain on slings where would the CG of a load be located during a lift? ✔✔below the attachment points the maximum number of parts of line that may be used when reeving fiber rope before friction loss is greater than mechanical advantage is: ✔✔8 what is the best hitch to use for lifting a small bore pipe vertically? ✔✔two half hitches when a carrier-mounted crane is on outriggers, full chart ratings apply only when all tires are: ✔✔clear off the ground Most load carts will include a small drawing of the crane showing the shape and location of the machine's: ✔✔quadrants of operation when evaluating a load landing area inside a building for cribbing, what would be a primary concern? ✔✔load capacity of the floor for the landing area what is the most significant information a rigger will need when setting up cribbing for a load? ✔✔weight and physical properties of the load the "Sweep area" refers to the: ✔✔total area that the boom can swing over an air tugger is lowering a load. A kink in the cable allows the rate of drop for a second, then pulls the slack through the snatch block, allowing the load to drop a short distance. The resulting condition from this maneuver is known as: ✔✔shock loading before loads are unhooked, all loads must be: ✔✔safely landed and properly blocked turnbuckles should be inspected: ✔✔after each use the factor in the "Rule of Thumb" formula for safe work limit of a three-leg bridle hitch is: ✔✔two [Show More]

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