Millwright level 2 Rigging questions and answers rated A+

Millwright level 2 Rigging questions and answers rated A+ the safe working load of a rigging hook is accurate only when the load is suspended from the ______________ of the hook saddle OSHA requires that a hook be replaced if the throat has opened _____ percent or more from it's original size. 15 A hook that is point loaded could theoretically carry about ________ percent of the rated load. 40 Slings are attached together using ___________. Shackels tapped holes used with screwed-in eye bolts should have a minimum depth of ______________ times the bolt diameter. 1 1/2 to level loads when the legs of a sling are unequal,_____________ can be used. equalizer plate Custom-fabricated spreader and equalizer beams should be tested at ____________ percent of their rated capacity. 125 long loads are supported during lift operations with _________________. spreader beams slings best suited for situations where the load is abrasive,hot,or tends to cut is a (n)_____________ sling. metal mesh The term D/d ratio refers to the relationship between the sling and the diameter of the surface the sling is wrapped around chain Dredging and other marine work requires _________ slings because they withstand corrosion better 15 a chain sling should be discarded if any portion of the chain is worn by ____________ percent or more. greatest mechanical advantage tag lines should be attached to a load where it will give the the capacity range of come-alongs is ____________ tons 1/2 to 6 false the ratchet jack can lift heavier loads than the screw jack or hydraulic jack. the most useful general purpose jack is the ______________ jack. hydraulic Use main hoist. What action is signaled by tapping your fist on your head, then using regular hand signals? make no machine movement Dog everything, the operator then signal the operator to stop if its apparent that the crane operator has misunderstood a hand signal, the signal person should extend the boom a one-handed signal that is given with the fist in front of the body and the thumb pointing toward the signaler's body means ______________. tag line to keep the load under control a _________ is used. a double-wrap choker hitch may be useful lifting a bundle of loose items, or maintain the load in a certain position. should be used for straight,vertical lifts only chain hoist should never be wrapped around an object or used as a choker load chain of a chain hoist natural fiber or synthetic ropes used to control the swinging of the load in hoisting activities tag lines any portion of the chain worn by 15 percent or more should be removed from service immediately Wear reduction of wire diameter of 25 percent due to abrasion or 15 percent due to corrosion discard metal mesh slings the chain should be removed from service after being annealed 6 times if jaws have been opened more than 15 percent of their normal opening remove beam clamps from service the safe working load of ___________with hook ends is less than that of the same size ____________ with other types of ends. turnbuckels some wear is normal; however, if the wear exceeds one third of the original Diameter reduction a handle that takes up or lets out the chain without using the ratchet handle. It cannot be used to raise or lower the load fast wind handle electric or pneumatically operated winches tuggers use main hoist tap on head arm extended, fingers closed, thumb pointing downward lower the boom arm extended, fingers closed, thumb pointing up, flex fingers in and out as long as load movement is desired Raise boom and lower load position both fists in front of body and move them in a circular motion, indicating the direction of travel (forward or backward). Travel (Both Tracks) clasps hands in front of body Dog everything a handle that takes up or lets out the chain without using the ratchet handle. It cannot be used to raise or lower the load fast wind handle electric or pneumatically operated winches tuggers use main hoist tap on head arm extended, fingers closed, thumb pointing downward lower the boom arm extended, fingers closed, thumb pointing up, flex fingers in and out as long as load movement is desired Raise boom and lower load Arm extended, palm down, move arm back and forth horizontally Stop most useful general purpose Jack's, operated by the pressure of enclosed liquid hydraulic jacks when lifting rough castings that would destroy wire slings by bending the wires over rough edges use chain slings True Screw-type plate clamps are used for vertical lifting only used primarily for Vertical lifts but some are used for angled lifts Lifting Lugs angular lifting pulls shoulder type eye bolt designed only for lifting a load vertically shouldeless type eyebolts pin when using a shackle on a hook, the _________ of the shackle should be hung on the hook.