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Cycle Time Factors <br />Loading Condition Description <br />Factor (min.) <br />Source <br />Material : <br />Mixed material <br />0.020 <br />(Cat HB) <br />Stockpile : <br />No adjustment - factor not applicable <br />0.000 <br />(Cat HB) <br />Truck ownership : <br />No adjustment - factor not applicable <br />0.000 <br />(Cat HB) <br />Operation : <br />Constant operation <br />-0.040 <br />(Cat HB) <br />Dump target : <br />Nominal target <br />0.000 <br />(Cat HB) <br />Road <br />segment # <br />Haul distance <br />(feet) <br />Grade <br />res. ( %) <br />Rolling <br />res. ( %) <br />Total <br />resistance ( %) <br />Speed <br />(feet/minute) <br />Travel time * <br />(minutes) <br />1 <br />500 <br />0.00 <br />5.00 <br />5.00 <br />2218 <br />0.295 <br />2 <br />500 <br />10.00 <br />5.00 <br />15.00 <br />734 <br />-0.118 <br />1 <br />500 <br />-10.00 <br />5.00 <br />-5.00 <br />2938 <br />0.228 <br />2 <br />500 <br />0.00 <br />5.00 <br />5.00 <br />2814 <br />0.178 <br />Truck/Loader Team Work cont'd Task # : 007 <br />Loading Tool Cycle Time : Number of loading tool passes required to fill truck : 2 passes <br />Excavators and front shovels - machine cycle time vs. job condition rating : NA <br />Track loaders - material descr. : NA <br />- cycle time elements (min.) : Load : NA <br />- selected value within basic rating : NA <br />Maneuver: NA <br />Wheel and track loaders - unadjusted basic loader cycle time ( load, maneuver, and dumr 0.525 minutes <br />Return route : <br />Net cycle time adjustment : <br />Adjusted loader cycle time (total time per loader pass) : <br />Net load time per truck * : <br />-0.020 <br />minutes <br />0.505 minutes <br />0.605 minutes <br />Truck Cycle Time : • bulk of 1st loader cycle completed during truck exchange if adj. loader cycle time < exchange time <br />Truck exchange time * *: 0.50 minutes Adjusted for site altitude : 0.515 minutes <br />Truck load time: 0.605 minutes Adjusted for site altitude : 0.605 minutes <br />Truck maneuver and dump time: 0.80 minutes Adjusted for site altitude : 0.825 minutes <br />" set at 0 if exchange time < adj. loader cycle time (truck exchange completed during 1st loader cycle) <br />Truck travel (haul & return) time: Road condition :Rutted dirt, little maintenance, no water, 2" tire penetration <br />Haul route : <br />Haul time ** : <br />0.183 minutes <br />* travel time shown for each segment includes acceleration /deceleration adjustment <br />•' total haul and return time shown includes altitude adjustment <br />Return time * *: <br />Total truck cycle time : <br />0.419 <br />JOB TIME AND COST <br />Fleet size : I Team(s) Total job time : 4.21 Hours <br />Unit cost : $0.843 /LCY Total job cost : $949 <br />sheet 2 of 2 <br />Dump : 0.100 <br />minutes <br />2.547 minutes <br />Loading tool unit production : 365.47 LCY /hour Adjusted for job efficiency : 303.34 LCY /hour <br />Truck unit production : 160.81 LCY /hour Adjusted for job efficiency : 133.47 LCY /hour <br />Optimal no. trucks /loading tool : 2 trucks Selected no. trucks /loader : 2 trucks <br />Adjusted hourly truck team production : 266.94 LCY /hr <br />Adjusted hourly single truck/loader team production : 266.94 LCY /hr <br />Adjusted hourly multiple truck/loader team production : 266.94 LCY /hr <br />