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Hitch Rack Ranch Phase III Surety Calculation Details <br /> Project: Hitch Rack Ranch <br /> Date: 07/05/16 <br /> Prepared by: Norwest Corporation <br /> WORKSHEET 9 <br /> PRODUCTIVITY AND HOURS REQUIRED FOR TRUCK USE <br /> Earthmoving Activity: <br /> Plant Growth Material. <br /> Approximately 295,418 Icy of material will be hauled. <br /> Characterization of Truck Use(type, size. etc.): <br /> Cat 777 Trucks <br /> Description of Truck Use(origin, destination, grade, haul distance, capacity, etc.): <br /> Productivity Calculations: <br /> No. Loader Passes/Truck= 78 LCY - 13 LCY = 6.0 passes <br /> truck loader bucket (round down to nearest whole <br /> capacity' net capacity number) <br /> Net Truck Capacity= 13 ILCY x 1 6.0 passes = 78 LCY <br /> loader bucket net no. loader <br /> capacity passes/truck <br /> Loading Time/Truck= 0.70 Imin X1 6.0 passes = 4.2 min <br /> loader cycle time (from no. loader <br /> Worksheet 8 or 10) passes/truck <br /> Truck Cycle Time = min + 1.2 min + 2.$ min + 1.8 min <br /> haul time return loading dump and <br /> time time maneuver time <br /> 7.8 min <br /> No. Trucks Required = 7.8 min - 2.8 min = 3 trucks <br /> truck cycle time total loading <br /> time <br /> Production Rate= 78.0 LCY x 0 — 7.8 min = 30.0 LCY/min <br /> net truck no. truck cycle time <br /> capacity trucks <br /> Hourly Production= 30.0 CY/min x 0 min/hr x 0.6 <br /> production rate efficiency <br /> factor <br /> = 108{1.0 LCY/hr <br /> Hours Required 1 280,497 LCY - 1080 LCY/hr = 60 hr <br /> volume to be hourly <br /> moved production <br /> *Use the average of the struck and heaped capacities. <br /> Data Source(s): CAT Handbook Edition 43 <br /> Printed 9/26/2016 APPENDIX L-1 24 <br />