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l J <br />Cycle Time Factors Loading Condition Description Factor (min.) Source <br />Material: Mixed material 0.020 (Cat HB) <br />Stockpile : Conveyor or dozer piled f0 R. high or less 0.010 (Cat HB) <br />Truck ownership : Common ownership of trucks and loaders -0.040 (Cat HB) <br />Operation : Constant operation -0.040 (Cat HB) <br />- Dump target : Nominal target 0.000 (Cat HB) <br />Net cycle time adjustment : -0.050 minutes <br />Adjusted loader cycle time (total time per loader pass) : 0.525 minutes <br />Net load time per truck' : 1.675 minutes <br />TrUCkCVCIeTime: 'bulk oflstloatlarryclewmptetetlduringtruckexchangeitadj.loatlercycletime<axchangalime <br />Truck exchange lime "': 0.70 minutes........ Adjusted for site altitude : 0.700 minutes <br />Truck load time: 1.675 minutes....... Adjusted far site altitude : 1.675 minutes <br />Truck maneuver and dump time: 1.10 minutes........ Adjusted for site altitude : 1.100 minutes <br />^ set et o it exchange time <adl. loader cyGe time (truck exdunge completed during 1 sl loader cycle) <br />Truck travel (haul & return) time: Road condition :Rutted dirt, little maintenance, no water, 2"fire penetration <br />Haul route <br />Road <br />segment it Haul distance <br />(feet) Grade <br />res. (°lo) Rolling <br />res. (%) Total <br />resistance (°I°) Speed <br />(feeVminute) Travel time ` <br />(minutes) <br />1 2,200 5.00 5.00 10.00 773 2.874 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Return route : Haul time ": 2.874 <br />1 2,200 -5.00 5.00 0.00 3569 0.767 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />minutes <br />'Navel time shownfar each segment inGUtles aaeleratioNdeceleralion atljuslmen( Return time": 0.767 minutes <br />^lolal haul end return time shown includes altitude adjustment Total truck cycle time : 7.116 minutes <br />Loading tool unit production : 994.74 LCY/hour...... Adjusted for job efficiency : 825.63 LCY/hour <br />Truck unit production : 331.98 LCY/hour...... Adjusted for job efficiency : 275.54 LCYlhour <br />Optimal no. trucks/loading foal : 3 trucks........... Selected no. trucks/loader : 3 trucks <br />Adjusted hourly truck team production : 826.62 LCY/hr <br />Adjusted hourly single tmcklfoader team produdlon : 825.63 LCYlhr <br />~~ -~(~ <br />