NCCCO Lattice Boom General Knowledge
exam with correct answers
The vlattice vboom vis vdesigned vto vtake vwinds vof vup vto v20 vmph. vfrom vthe vside vplus va vfull vrated vload, vplus
va vdirect vside vload vequal vto vwhat vpercent vof vthe vrated vload? v- vcorrect vanswer2%
The vpart vof vthe vload vchart vgoverned vby vstability vis vbased von vwhat vpercentage vof vcapacity vwhile va
vcrawler vcrane vis vworking vover vthe vside vquadrant? v- vcorrect vanswerA. v75%
The vmost vunstable vworking vquadrant vfor va vcrawler vcrane vis vthe; v- vcorrect vanswerSide
What vtype vof vcapacity vis vlisted von va vcrane vload vchart? v- vcorrect vanswerStatic
If vthe vmanufacture vof va vparticular vcrane vdoes vnot vspecifically vpermit vpick vand vcarry voperations vwhat
vprocedure vmust vbe vfollowed vduring vthis voperation? v- vcorrect vanswerDon't vmake vany vpick vand vcarry
vlifts
What vis vthe vmain vpurpose vof va vjib/extension? v- vcorrect vanswerTo vextend vreach vhigher vor vup vand vover
When vthe vnumber vof vlayers vof vrope von va vdrum vincrease vthe vline vpull___________. v- vcorrect
vanswerDecreases
When vhandling vboom vsections, vthe vbest vplace vfor vslings vto vbe vattached vis; v- vcorrect vanswerAt vthe vpin
vconnections vat vthe vends vof vthe vtop vchords
Placing vtimber vblocking vunder vthe vtips vof vthe vtracks von va vcrawler vcrane vwill; v- vcorrect vanswerMake vthe
vcrane vmore vstable
What vis vthe vmajor veffect vof vstopping vsuddenly va vrapid vswing vwhile voperating vlong vboom vcrane? v-
vcorrect vanswerAction vmay vcause vthe vcrane vboom vcollapse vand/or voverturn vthe vcrane
, According vto vB30.10 vhooks vshall vbe vremoved vfrom vservice vwhen vthe vthroat vopening vexceeds v_____
vthe voriginal vthroat vopening. v- vcorrect vanswer5%
On va vcrawler vcrane vground vbearing vpressure vis vgreatest vwhere? v- vcorrect vanswerOver vthe vcorner
During vdisassembly vof va vlong vboom, vthe vpendant vlines vare vconnected vat vthe vmaximum vcantilever
vpoint vand vthe vboom vis vslightly vlifted voff vthe vground, vwhich vboom vconnection vpins vare vto vbe vremoved
vnext? v- vcorrect vanswerThe vbottom vpins vahead vof vthe vcantilever vpoint
Most vcrane vmanufactures vrequire vthe vload vchart vcapacities vmust vbe vreduced vwhen vwind vspeed
vreaches; v- vcorrect vanswer20 vmph
The vdefinition vof vcantilever vof va vlattice vboom vcrane vis; v- vcorrect vanswerThe vboom vsuspended vpast vthe
vpendant vconnections
What vchart vdo vyou vuse vwhen voperating va vcrane von va vbarge; v- vcorrect vanswerList vchart
According vto vOSHA, vJibs vmust vhave va vpositive v________ vfrom vbackwards voverturning v- vcorrect
vanswerStop
Mobile vcranes von vbarges vshall vbe v- vcorrect vanswerPhysically vattached vto vthe vbarge
When va vcrane vis vproperly vbarricaded, vwhat vis vthe vclearance vrequired vall vthe vway varound v360 vdegrees
vbetween vthe vsuperstructure vand vthe vbarricade vwhen vswung v360 vdegrees? v- vcorrect vanswer2 vfeet
According vto vASME vB30.5 va vfire vextinguisher vshall vhave va vrating vof v__________ vand vshall vbe vavailable
vat vall voperator's vstations vor vcabs vof vthe vequipment. v- vcorrect vanswer10 vBC vor vhigher
When vassembling va vlattice vboom vcrane vthe vtop vpins vof vthe vboom vsections vshould vbe vinserted; v-
vcorrect vanswerFirst
exam with correct answers
The vlattice vboom vis vdesigned vto vtake vwinds vof vup vto v20 vmph. vfrom vthe vside vplus va vfull vrated vload, vplus
va vdirect vside vload vequal vto vwhat vpercent vof vthe vrated vload? v- vcorrect vanswer2%
The vpart vof vthe vload vchart vgoverned vby vstability vis vbased von vwhat vpercentage vof vcapacity vwhile va
vcrawler vcrane vis vworking vover vthe vside vquadrant? v- vcorrect vanswerA. v75%
The vmost vunstable vworking vquadrant vfor va vcrawler vcrane vis vthe; v- vcorrect vanswerSide
What vtype vof vcapacity vis vlisted von va vcrane vload vchart? v- vcorrect vanswerStatic
If vthe vmanufacture vof va vparticular vcrane vdoes vnot vspecifically vpermit vpick vand vcarry voperations vwhat
vprocedure vmust vbe vfollowed vduring vthis voperation? v- vcorrect vanswerDon't vmake vany vpick vand vcarry
vlifts
What vis vthe vmain vpurpose vof va vjib/extension? v- vcorrect vanswerTo vextend vreach vhigher vor vup vand vover
When vthe vnumber vof vlayers vof vrope von va vdrum vincrease vthe vline vpull___________. v- vcorrect
vanswerDecreases
When vhandling vboom vsections, vthe vbest vplace vfor vslings vto vbe vattached vis; v- vcorrect vanswerAt vthe vpin
vconnections vat vthe vends vof vthe vtop vchords
Placing vtimber vblocking vunder vthe vtips vof vthe vtracks von va vcrawler vcrane vwill; v- vcorrect vanswerMake vthe
vcrane vmore vstable
What vis vthe vmajor veffect vof vstopping vsuddenly va vrapid vswing vwhile voperating vlong vboom vcrane? v-
vcorrect vanswerAction vmay vcause vthe vcrane vboom vcollapse vand/or voverturn vthe vcrane
, According vto vB30.10 vhooks vshall vbe vremoved vfrom vservice vwhen vthe vthroat vopening vexceeds v_____
vthe voriginal vthroat vopening. v- vcorrect vanswer5%
On va vcrawler vcrane vground vbearing vpressure vis vgreatest vwhere? v- vcorrect vanswerOver vthe vcorner
During vdisassembly vof va vlong vboom, vthe vpendant vlines vare vconnected vat vthe vmaximum vcantilever
vpoint vand vthe vboom vis vslightly vlifted voff vthe vground, vwhich vboom vconnection vpins vare vto vbe vremoved
vnext? v- vcorrect vanswerThe vbottom vpins vahead vof vthe vcantilever vpoint
Most vcrane vmanufactures vrequire vthe vload vchart vcapacities vmust vbe vreduced vwhen vwind vspeed
vreaches; v- vcorrect vanswer20 vmph
The vdefinition vof vcantilever vof va vlattice vboom vcrane vis; v- vcorrect vanswerThe vboom vsuspended vpast vthe
vpendant vconnections
What vchart vdo vyou vuse vwhen voperating va vcrane von va vbarge; v- vcorrect vanswerList vchart
According vto vOSHA, vJibs vmust vhave va vpositive v________ vfrom vbackwards voverturning v- vcorrect
vanswerStop
Mobile vcranes von vbarges vshall vbe v- vcorrect vanswerPhysically vattached vto vthe vbarge
When va vcrane vis vproperly vbarricaded, vwhat vis vthe vclearance vrequired vall vthe vway varound v360 vdegrees
vbetween vthe vsuperstructure vand vthe vbarricade vwhen vswung v360 vdegrees? v- vcorrect vanswer2 vfeet
According vto vASME vB30.5 va vfire vextinguisher vshall vhave va vrating vof v__________ vand vshall vbe vavailable
vat vall voperator's vstations vor vcabs vof vthe vequipment. v- vcorrect vanswer10 vBC vor vhigher
When vassembling va vlattice vboom vcrane vthe vtop vpins vof vthe vboom vsections vshould vbe vinserted; v-
vcorrect vanswerFirst
