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<br />PROJECT -Haul Road Reclamation <br />(Surfacing Material Removal) <br />EQUIPMENT: 637 "D" P-P Scraper <br />ASSUMPTIONS: <br />Efficiency = 80% <br />Altitude Adjustment = 93.5% <br />RR = 6% <br />After the haul roads are ripped to a depth of 3 feet, the top I foot will be <br />hauled by scraper and disposed of in the open pit. <br />Average haul distance one way = 1,320 feet <br />• PRODUCTION = 450 cubic yards/hour (Cat Handbook, p. 218) <br />ACTUAL PRODUCTION = Ideal x Alt. Adj. x Eff. <br />= 450 x .935 x .80 <br />= 337 cubic yards/hour <br />VOLUME 2640'L x 30'W x I'D <br />27 cu. ft. cu. yd. <br />= 2,933 cubic yard <br />TIME = 2,933 x337 <br />= 9 hours <br />= I.I shift <br />COST= I.I shift x $1,683.59/shift <br />_ $1,851.95 <br />• <br />L-8 <br />