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General Crane Certification Prep/ 110+ Q&A/
Ideal conditions - Answer: lifting capacities in a load chart assumes the net capacity - Answer: gross capacity minus the deductions static load - Answer: capacities listed in a load chart are operational quadrants - Answer: a work area diagram identifies tip height - Answer: the range diagram should be used to determine boom gross load - Answer: rigging components, hooks, blocks, and other lifting equipment is considered part of the gross load. part of the load - Answer: The weight of load handling devices such as load blocks, ropes, and slings are considered
hoist lines hanging below the boom tip - Answer: are considered a DEDUCTION when they are not in use hoist line on the top side of the boom is - Answer: never a deduction effective weight of a stowed jib - Answer: lower the actual weight According to OSHA the term "must" is - Answer: Mandatory Boom length is measured from - Answer: Heel pin to the center of the boom tip sheave pin A boom angle indicator indicates the boom's angle to - Answer: Horizontal Load radius - Answer: is the horizontal distance from the center of rotation to the centerline of the vertical hoist line with the load freely suspended. leverage - Answer: cranes are based on the principal of certified load weight and add the weight of all rigging - Answer: the best way to determine the weight of a load is to have a stowed boom extension - Answer: is pinned at the base section calculate net capacity - Answer: if the rating in a chart is greater than the line pull use the permissible line pull of the wire rope and then make deductions nonstandard attachment - Answer: is a deduction from the load ratings longer radius - Answer: when load weights are between values listed in the load chart use
loosely spaced cribbing - Answer: decreases the stability and strength considering the support surface for a crane - Answer: voids, tanks, loose fills, depressions, and the soil stability must be sufficient corner - Answer: cranes with suspended loads generate the most (ground pressure) approach roads - Answer: an important factor to consider about site access is compaction of pre operational work site inspection - Answer: construction site hazards and restrictions are identified by the back fill compaction - Answer: greatest concern when setting up a crane near a new building expect the ground to be soft structure limits or stability - Answer: a cranes rated capacity is based on either shaded area or above bold line on load charts - Answer: capacities distinguished in bold type, marked with an asterisk in a .... which are structural backwards stability - Answer: most critical when using the shortest boom, no load, on tires , and over the side, short radius inspection of - Answer: wire ropes prior to each shift wire rope lubricant - Answer: should not hinder visual inspection line pull - Answer: is the amount of weight, a drum will hoist for a given layer
layers increase the line decreases - Answer: on rope spools onto a hoist drum 2 full wraps - Answer: OHSA requires are least to remain on a load hoist drum flange of the drum 1/2" - Answer: the minimum distance extended over the top layer of rope on the splicing wire rope - Answer: is prohibited by OHSA calculate safe working load - Answer: breaking strength divided by safety factor equals lay length - Answer: The length around the wire rope in which one strand makes one revolution around the core spinning of the load - Answer: a socket is attached directly to a hook by 6x25 IWRC may result in core failure - Answer: an indication of .... in rotation resistant wire rope is diameter reduction calculating rotation resistant - Answer: -safety factor, -2 broken wires 6 rope diameters one broken wire - Answer: at an end socket of a standing wire rope is allowed load indicator - Answer: measures the actual weight of the load load moment indicator - Answer: to warm an operator of an overloaded condition drum rotation indicator - Answer: indicates the direction and speed of the hoist drum
monthly inspection - Answer: include a documented shift inspection wear pads - Answer: when inspecting the book on a telescopic boom crane check the hydraulic failure - Answer: cranes that must be equipped with holding valves to prevent boom lowering in the event of holding valves - Answer: hold pressure in the vertical ram if fails whip line - Answer: auxiliary boom head/point is intended to be used with weight of a stowed attachment - Answer: is lower than the actual weight, deduct the effective weight fixed jibs - Answer: purpose is to increase the height of a load may be lifted structural strength - Answer: jib capacities are based on jib offset - Answer: be exposed as the jib angle to the boom, when lifting off the capacity will be increased PTO function - Answer: provides power transfer to the hydraulic pump manufacture`s recommendations - Answer: wind warning is given follow the physical times - Answer: every three years render the starting means inoperative - Answer: before repairs are started on a crane you must
side loading - Answer: a load applied at an angle to the vertical plane of the boom is considered boom deflection - Answer: increase in load radius, when a heavy load is lifted it will result in sheave size for load blocks - Answer: minimum of 16 time nominal diameter of the rope D/d ratio - Answer: diameter of the load divided by the body diameter of the sling sorting hook - Answer: is not permitted when people are in the fall zone synthetic slings - Answer: when assembling or disassembling a crane boom handeling suspension personnel platforms - Answer: must be equipped with a book angle indicator, and anti two block device and a boom length indicator personnel platform - Answer: may not exceed 50% of a cranes rated capacity maximim intended load - Answer: 5 times OHSA requires - Answer: proof test to 125% of personnel platforms and their rigging at each new job site, hold suspended for 5 mins 75% capacity - Answer: two cranes which shall be leveled properly one person to direct lift - Answer: vertical hoist lines which of the following is permissible to be removed from a carry deck crane - Answer: load chart, roll over protective system, fire extinguisher, (boom extension)
crane left running - Answer: operator must observe for unauthorized entry land all suspended loads - Answer: before leaving a crane unattended fully retracted and stowed - Answer: storing boom overnight unattended
