Laserfiche WebLink
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 /> Earthmovino Activity: <br /> Drainages and ponds. <br /> Approximately 250,862 Icy of material to 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 _ 16 LCY = 4.0 passes <br /> truck loader bucket (round down to <br /> capacity net capacity nearest whole <br /> Net Truck Capacity= 16 LCY x 4.0 passes = ®LCY <br /> loader bucket no. loader <br /> net capacity passes/truck <br /> Loading Time/Truck= 0.60 min x 4.0 passes = 2.4 min <br /> loader cycle time (from no. loader <br /> Worksheet 8 or 10) passes/truck <br /> Truck Cycle Time min + 1.6 min + 2.8 min + 2.0 min <br /> haul time return loading dump and <br /> time time maneuver <br /> = 8.4 min <br /> No. Trucks Required = 8.4 min — 2.8 min = 0 trucks <br /> truck cycle time total loading <br /> time <br /> Production Rate= 64.0 LCY x 0 — 8.4 min = 22.9 LCY/min <br /> net truck no. trucks truck cycle <br /> capacity time <br /> Hourly Production = 22.9 LCY/min x ® min/hr x 0.79 <br /> production rate efficienc <br /> y factor <br /> 1083 5 LCY/hr <br /> Hours Required = 38,696 LCY - 1084 LCY/hr = ® 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 20 <br />