Advanced Crane & Rigging Test Questions and Complete Solutions Graded A+

  When should an approved lift plan be re-approved? - Answer: D. If there is any deviation from the original lift plan. Electrical hazards in the lift area and swing direction and degree are factors to consider in preparing which portion of a lift plan? - Answer: D. Crane Placement Capacities for crawler cranes that have outrigger extensions may not exceed ________. - Answer: D. 85 perfect of tipping When planning a lift involving two cranes, calculate the lowest net capacities that both cranes will have during the lift. The next step is to ______. - Answer: A. Make sure that the sum of the lowest rated net capacities of the cranes exceeds the load weight. A lift plan should be discussed ______. - Answer: D. At a pre-lift meeting where all personnel in the lift are present. What is meant by the term "two blocking?" - Answer: B. The load block contacts the boom point sheaves Lifting 20,000 lbs with a 2-leg bridle sling at a 30° horizontal sling angle, what is the force applied to each leg? - Answer: 20,000 lbs. In multiple crane lifts using an equalizer beam, the weight of the beam should be considered: - Answer: Part of the load weight What is required if there is deviation from the lift plan? - Answer: A new lift plan On level ground using skids and rollers, what percent of the weigh of the load should yield the required line pull as a general rule of thumb? - Answer: 5% All of the following are results of unbalanced reeving of the block except: - Answer: Wear on the hook Before a spreader bar or beams can be used they MUST have been: - Answer: Tested and approved When materials are being hoisted to an upper level, a tag line is used to: - Answer: Help control the load Two cranes are lifting 100 tons. If crane A has 40% of the load, how much weight will crane B have on its hook? - Answer: 120,000 lbs To confirm the rated capacity of a specific sling, consult the manufacturer's: - Answer: Sling tag OSHA regulations require hook replacement if the opening exceeds what percentage of it's original throat opening? - Answer: 15% At what percentage of increase in length should a chain sling be removed from service? - Answer: 5% The methodical process that attempts to identify hazards and devise plans to overcome or eliminate hazards which may interfere with crane or rigging is called: - Answer: Lift plan What provides additional control of a load being lifted? - Answer: Tag lines When travelling on a rubber tire mobile crane, how should the boom be positioned? - Answer: In line with the direction of travel. Before performing pick and carry operations with any mobile crane, it is important to: - Answer: Refer to the manufacturer's capacity chart. According to ASME B30.5, a two crane lift is signaled by: - Answer: One designated person What is the primary concern when working with a high boom angle? - Answer: Backward stability ON multiple crane lifts, the load on each crane should NOT exceed what percentage of capacity? - Answer: 75% What are lifting lugs? - Answer: Eyelets welded to steel plate for lifting. The formula for determining stress on a snatch block performing a vertical lift is: line pull x block factor = block load. What must be done to calculate the formula? - Answer: Multiply the load weight by the coefficient of friction to determine line pull, and then use the standard formula. If both fists are placed in front of your body with your thumbs pointed outward, the crane operator should: - Answer: Extend the boom sections. What is the maximum percent of the rated capacity of a crane that can be used to lift personnel? - Answer: 50% When does lightning present the greatest hazard to crane and regging personnel? - Answer: When thunder and lightning are apparent. What force would be required to move an object up an inclined plane compared to lifting it vertically? - Answer: 1 1/2 times more. Personnel platforms shall NOT be used to lift: - Answer: Tools and materials without employees All of the following are reasons for stopping personnel lifting operations EXCEPT: - Answer: There are no tag lines. When working in close quarters, the main concern is: - Answer: Safety The point of any objects weight can be assumed to be concentrated at: - Answer: Center of gravity In a spur-gear chain hoist with a two chain system, the endless chain is used to: - Answer: Raise and lower the load All of the following conditions exert dynamic loading on a crane except: - Answer: Static boom angle Proper lead sheave replacement as it relates to the hoisting drum location is: - Answer: Proper spooling of wire rope The most important information to consider when planning a lift is: - Answer: Weight of the load Prior to use, all new, altered, modified, or repaired rigging hardware shall be inspected by whom? - Answer: A designated person An unsafe condition that riggers should be aware of when dealing with a multi part load block is: - Answer: Twisting multi part lines Most cranes in duty cycle operation require : - Answer: Load test The only personnel allowed to have their body parts outside of the suspended personnel platform during hoisting and lowering operations are: - Answer: Signal Persons When is the most important reason rigging hardware should not be modified? - Answer: It could negatively affect its capacity In the term D/d ratio, the d is an abbreviation for? - Answer: Diameter A document that outlines weights, crane configuration and rigging requirements for a lift is? - Answer: Lift plan When using a 1-inch wire rope sling in a vertical basket hitch lifting a 24 ft, 36 inch diameter pipe - Answer: 36-1 What is an LMI - Answer: Load moment indicator Location of electrical hazards on the job site should be documented on a: - Answer: Lift plan When forming a lift plan, a primary concern for the person doing the rigging is: - Answer: Capacity of rigging When using a wedge socket, the dead end of the rope is secured in the socket by the: - Answer: Wedge When erecting or stowing a swing-away lattice extension, what should be used to control the movement of the extension? - Answer: Tag line Planning for rigging is required: - Answer: Only when lifting any load A lift plan must be completed by a: - Answer: Supervisor Anchorage point for fall arrest for a single person must be able to hold? - Answer: 5000 lbs. When of the following items are used for heavy rigging? - Answer: Slings, shackles and spreader beam If the jacket of a synthetic round sling is damaged, that sling should be: - Answer: removed from service immediately Which of the following is not a factor when making submerged lifts? - Answer: water temperature When a tugger is mounted where the operator can NOT see the load, the signal person must use: - Answer: Signals used for cranes Who can design a personnel platform? - Answer: Qualified personnel A one inch, 3 leg bridle wire rope sling rigged at 45° angle is good for 18 tons. The addition of a fourth leg will increase your capacity by: - Answer: 0 lbs After any structural repair or modification, a personnel lifting platform shall be tested to what percentage of the platform rating? - Answer: 150% All of the following statements about crane contact to power lines are true EXCEPT: - Answer: The operator should leave the cab as quickly as possible Loads introduced into the machine or its components due to accelerating or decelerating force is called: - Answer: Dynamic loading When lifting 100,000 lb, the main load block must be reeved with how many parts of line? - Answer: 4 In a multiple-crane lift using an equalizer, the weight of the equalizer is considered part of the - Answer: load weight To read a lattice boom crawler crane load/capacity chart, the operator must first know the - Answer: boom length and load radius Equipment condition is categorized under which part of a lift plan? - Answer: Weight The person in charge of planning a critical lift is the: - Answer: Rigging superintedant During a critical lift, the only person(s) who may give signals to the crane operator is/are the: - Answer: designated, qualified signalers