Advanced Rigging Test Questions and Complete Solutions Graded A+

  the operational quadrant between the left-or-right-side outriggers is - Answer: over-the-side cranes are typically built to be - Answer: longer than they are wide in a multiple-crane lift, the crane with the greatest net capacity must always be - Answer: closest to the loads center of gravity leverage is defined as - Answer: the power applied to a lever to cause the load to move the quadrant that is located between the rear outriggers or crawlers in the rearward direction of travel is known as - Answer: over-the-rear what dynamic occurs when a load is hoisted from a point other than directly over the load - Answer: pendulum effect the sudden release of a load that causes a rapid change in effective load weight is called - Answer: acceleration backward stability of a crane is affected by - Answer: high boom angles and inclines a loads center of gravity in relation to the tipping axis is affected by all of the following except - Answer: raising or lowering the load a cranes stability is affected by all of the following except - Answer: centered lift to find the parts of line, the operator - Answer: divides the suspended weight by the WLL of the hoist rope a document that outlines all weight, rigging, and configuration requirements for a lift is a - Answer: lift plan when a bundle of rebar is being lifted with two slings in a choker hitch, the sling eyes should be threaded in the opposite direction to improve load stability - Answer: false adjustable lifting beams are limited by - Answer: wire rope slings spreader beams are tested at what percent of their rated capacity - Answer: 125 the formula for determining the WLL of a bridle hitch is - Answer: WLL = (W)(H/L)(2) WLL = (one sling in a straight pull)(distance between hook and load/length of sling legs)(2) a sling angle is considered hazardous if it less than ______ degrees from horizontal - Answer: 45 doubling the depth of a cribbing beam increases the WLL by a factor of - Answer: four a test lift is recommended before - Answer: a critical lift during critical lift operation, the operator must obey a(n) _______ signal at all times - Answer: emergency stop the _____ gives extra stability to the crane during lifting operations - Answer: counterweight crane capacities must be reduced for lower tire inflation pressure - Answer: true crane manufactures produce separate load/capacity charts for certain operational quadrants - Answer: true as a crane swings to various quadrants, the distance that the load is positioned from the tipping axis - Answer: may change dramatically interpolation is permitted is determining load capacities - Answer: true the effective weight of crane components past a main boom lifting point includes - Answer: an erected jib the size and weight per foot of the _____ need to be considered as part of a lift plan - Answer: wire rope lift plans are mandatory for - Answer: steel erection or multiple-crane lifts suspended weight includes all of the following except - Answer: hoist rope weight prior to planning a lift, a designated person must classify the lift into which of the following categories - Answer: ordinary, critical, pre-engineered production jib charts show the capacities of the jib boom extension - Answer: at different degrees of offset when lifting from the main boom with the jib extension mounted on the boom tip, the effective job weight must be _____ the gross capacity - Answer: deducted from the weights of the load block, headache ball, and wire rope of a crane are - Answer: deductions that need to be subtracted from the gross capacity of the crane over-the-front, over-the-rear, and over-the-side are ________ considerations for crane placement - Answer: crawler configurations the boom point elevation is the distance from - Answer: the ground to the center of the boom point sheaves the number of shackles required is a criterion that falls under the category of - Answer: sizing of slings the load block weight is considered part of the weight of the _______ - Answer: load to be lifted, not including rigging if the boom length falls between values listed on the load chart, the operator should use the capacity rating for the - Answer: next longer load radius to be compensated for the boom length foundation and location of electrical hazards are example of _______ criteria - Answer: crane placement critical lifts always require - Answer: an equalizer beam when lifting from the main boom with the jib extension mounted on the boom tip, the effective jib weight must be ________ the gross capacity - Answer: deducted from on some hydraulic telescoping cranes, which boom configurations are engaged or disengaged by means of a switch? - Answer: dual boom modes in preparing for multiple-crane lifting, the load blocks of each crane have to be positioned relative to the loads center of gravity using the formula ________ - Answer: (net capacity crane one) x A = (net capacity crane two) x B