Nccco correct stuvia - Study guides, Class notes & Summaries

It could swing out away from the crane - ANSWER What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection? Swing - ANSWER What Standard Method hand signal is being illustrated? Anyone - ANSWER Who should an operator respond to a "stop" signal from? The fron - ANSWER Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? The distance from the cente...

Boom up - ANSWERWhat action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? 1% - ANSWERWhen hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? The capacity listed in the load chart minus the weight of the rigging and all attachments - ANSWERWhat is the net capacity of a crane on main boom un...

Where is the best location for leveling a crane? - ANSWER Upperworks When determining the "gross load" the best method is: - ANSWER Get an accurate load weight and add the rigging. By order of hitch strength, which is the correct answer? - ANSWER Basket, vertical, choker What is the purpose of using a jib? - ANSWER Increase height When taking a side strain on a boom, what concerns the operator most? - ANSWER Boom damage You should always have at least how many wraps on a hoist d...

1. Base 2. Three-point bridge 3. Stabilizer beam 4. Slewing cylinder 5. Column 6. Inner (main) boom 7. Inner (main) boom cylinder 8. Stabilizer leg 9. Manual control station 10. Outer boom 11. Outer boom cylinder 12. Extensions 13. Extension cylinders 14. Link(s) 15. Load hook 16. Hydraulic oil cooler - ANSWERArticulating boom crane (ABC) and components 1. Base 2. Ladder 3. Stabilizer beam 4. Platform 5. Column 6. Inner (main) boom 7. Inner (main) boom cylinder 8. Stabi...

Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? - ANSWERThe front What is the definition of "operating radius?" - ANSWERThe distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? - ANSWERThey are based on the stability of the crane In which quadrant are rough terrain crane capacities generally grea...

The part of the load chart governed by stability is based on what percentage of capacity while a crawler crane is working over the side quadrant? - ANSWER A. 75% The most unstable working quadrant for a crawler crane is the; - ANSWER Side The lattice boom is designed to take winds of up to 20 mph. from the side plus a full rated load, plus a direct side load equal to what percent of the rated load? - ANSWER 2% What type of capacity is listed on a crane load chart? - ANSWER Static If ...

The crane is out of level, you release the swing break, the boom swings downhill, your: - ANSWERLoad radius increases Blocking can be placed under the ends of tracks to: - ANSWERIncrease the cranes stability when Operating over front or back On lattice boom crane's fitted with power load Lowering , a heavy load should be lowered by using the: - ANSWERPower Load-lowering feature and the foot break Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effe...

The lattice boom is designed to take winds of up to 20 mph. from the side plus a full rated load, plus a direct side load equal to what percent of the rated load? - ANSWER2% The part of the load chart governed by stability is based on what percentage of capacity while a crawler crane is working over the side quadrant? - ANSWERA. 75% When the number of layers of rope on a drum increase the line pull___________. - ANSWERDecreases When handling boom sections, the best place for slings to b...

When making a multiple crane lift, it is important for the operator to understand that: - ANSWER The weight may increase if the other crane lands the load If a crane is not set-up level and the operator swings a load from the high side to the low side, the load radius will: - ANSWER Increase Most crane manufacturers reduce load capacity for duty-cycle operations because: - ANSWER Side loading forces may occur On who's recommendations should a preventative maintenance program be set-up?...

1) According to ASME, when rails are used for the crane support, the rails splices mus: - ANSWERA) be smooth 2) What is the task of high-tensile bolt connections between tower sections? - ANSWERA) To avoid fail. 3) According to the Tower Crane Reference Manual, how often should the hoist wire rope be lubricated? - ANSWERA) Every 200 hours of operation. 6) According to sheet C, where does the climbing unit have to be located with 12 tower sections added and the guided section removed? -...