Crane Operation and Safety Practices, Exams of Construction

Download Crane Operation and Safety Practices and more Exams Construction in PDF only on Docsity! NCCCO MISSED QUESTIONS & CORRECT ANSWERS 2024-2025. GRADED A+ A crane's ground pressure can approach a weight that is: a) 30% of the weight of the crane and the suspended load b) 50% of the weight of the crane and suspended load c) 30% of the weight of the crane and the suspended load d) 100% of the weight of the crane and the suspended load - ANSD A pin-connected lattice bom is being dismantled. After connecting the equalizer(bridle) to the connecting lugs on the boom, which boom connecting pins should be removed first? a) Top connections pins, located at and behind the equalizer b) top connections pins, located at and ahead the equalizer c) Lower connections pins, located at and ahead the equalizer d) lower connections pins, located at and behind the equalizer - ANSC According the ASME, which volume listed below must be used to hand signal a mobile crane a. ASME B30.3 b. ASME B30.22 c. ASME B30.9 d. ASME B30.5 - ANSD According to OSHA 1926.1408 operating in the vicinity of power lines, the requirements that must be met broke into 3 options, respectively are a) 40 foot clearance, Table A, Deenergize and ground b) Table A, Table T, Deenergize and ground c) 50 foot clearance, 20 foot clearance, Table A d) Deenergize and Ground, 20 foot clearance, Table A clearance - ANSD All telescopic boom cranes must be equipped with: a) boom angle indicator b) drum rotation indicator c) LMI d) two-block prevention system - ANSD As you boom down, the leverage of the load on the crane will: a) increase b) decrease c) stay the same d) depends on the weight of the load being lifted - ANSA At what wind speed should crane operations cease a) manufacturers recommendation b) 40 mph c) 35 mph d) 10 mph - ANSA Blocking can be placed under the ends of tracks to: a) increase the cane's stability when operating over front or back b) increase the crane's stability when operating over side c) stop crane from traveling unexpectedly d) stop crane from sliding unexpectedly - ANSA Blocking under the outrigger pads/float shall be: a) parallel to the outriggers b) sufficient to support the crane and the load c) perpendicular to the outriggers d) at least three layers thick - ANSB Blocking which is not tightly placed may fail: a)25% of design b) 30% of design c) 50% of design d) 80% of design - ANSC Boom length is a) from the boom hing pins to the center of the boom tip sheave b) from the boom hinge pins to the boom tip c) from the base of the boom to the center of the boom tip sheave d) from the base of the boom to the bottom tip - ANSA Deflection of the boom and pendant stretch will increase a) load radius b) weight of boom c) load weight d) crane stability - ANSA During handled with extra care - ANSC One of the required safety devices on a crane is a) anti-two black b) boom hoist kickout c) boom stop d) LMI - ANSC Safety regulations prohibit the use of clips to make hoisting sling eyes True or false - ANSTrue Seat belts shall be provided on what cranes? A) lattice truck cranes b) hydraulic truck cranes c) cherry pickers d) lattice crawlers - ANSC Should the load be applied when determining the proper boom angle? a) Yes b) no c) depends on lift conditions d) only during critical lifts - ANSA Side loading may be cause by: a) starting or stopping the swing too rapidly b) raising or lowering the load too rapidly c) raising or lowering the boom too rapidly d) increasing the load radius - ANSA The best way to keep people from being injured from the counterweight of the crane is to: a) blow the horn when swinging b) barricade the swing radius c) use danger signs d) barricade the swing radius of the rear of the rotating superstructure - ANSD The crane operating control positions are not regulated and every crane manufacturer locates the controls in relation to each other differently True or False - ANSFalse The proper way to calibrate a boom angle indicator is: a) use a protractor b) boom up against the stops and set the indicator to 0 degress c) using a level, raise the boom to horizontal and set the indicator to 0 degrees d) call the company mechanic - ANSC The rule of thumb for wire rope sling rejection criteria is? a)3/6 b) 5/10 c) 2/12 d 4/8 - ANSB The term, "Upper works or Superstructure" refers to the are of the crane: a) above the turntable b) below the turntable c) in front of the boom - ANSA There is a standard accepted rule for securing the wire rope end protruding from a wedge socket A) true b) false - ANSB Timber mats work best when they are: a) bolted together b) nailed together c) held together with wire rope - ANSA Tipping capacities of crawler cranes are based non what percentage of tipping? a) 70% b) 80% c) 85% d) 75% - ANSD What is the "Jib offset" a) jib angle to the boom b) jib angle to the ground c) jib angle to the vertical d) jib angle to the horizontal - ANSA What is the first thing an operator should do before going under a low pipe rack? a) put the swing lock on b) blow the horn c) check to see what is in the pipe d) post a spotter to check clearance - ANSD: post a spotter to check clearance What is the minimum design factor required for a right regular lay main boom or auxiliary hoist rope? a) 5 b) 3.5 c) 2.5 d)7 - ANSB what is the minimum design factor required for right regular lay main bow or auxiliary hoist rope? a) 5 b) 3.5 c) 2.5 d) 7 - ANSB What quadrant produces the least amount of ground pressure on a lattice crawler: a) corner b) side c) front d) rear - ANSB When a crane's hydraulic boom sections are required to be extended equally and they are not, the: a) hydraulic system can be damaged b) shortest section can be overloaded c) LMI can give false reading d) longest section can be damaged - ANSD When a lattice boom truck crane is lifting on outriggers, the floats or pad should always be: a) large enough to support two times the applied load b) with the tires firmly on the ground c) secured to the outriggers d) placed on mats - ANSC When a lattice boom truck crane that is properly setup with no front outrigger and the boom is positioned over the front, the combined center of gravity of the carrier and upper works will move a) further from the tipping axis b) closer to the tipping axis c) on top of the tipping axis d) to the middle of the tipping axis - ANSB When installing a pin-connected lattice boom on a mobile crane you should always: a) use the boom hoist pawl to hold the boom b) not be on outriggers during installation c) use the boom house brake to hold the boom d) remove the pins from underneath the boom last - ANSA When lifting a load with more than one crane, it is important to: a) use only creates from the same manufacturer b) use only cranes with the same rated capacity c) keep the working radius of both cranes the same d) keep the hoist lines of both cranes vertical - ANSD When operating a truck crane what is the most unstable allowable quadrant of operation? a) front b) rear c) side