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HOURLY PRODUCTION sheet 2 of 2 <br />Hauling Caoaciri <br />Scraper Payload (weight) Basis <br />Material weight : 1,600 pounds/LCY <br />Material description <br />Coal -Bituminous, Raw <br />Rated payload : 75,000 pounds <br />Payload capacity : 46.88 LCY <br />Cvcle Time <br />Scraper loading time' : 1.00 <br />Maneuver and spread time : 0.60 <br />• loatl ame per screper pair on push-pull models <br />Bowl (volume) Basis <br />Struck volume <br />Heaped volume <br />Average volume <br />Adjusted capacity <br />21.00 LCY <br />31.00 LCY <br />26.00 LCY <br />26.00 LCY ••• <br />hoary production reflects volume per scraper pair on push-pull models <br />iJob Condition Corrections : Site altitude (ft.) : 6,200 <br /> ' Scraper Push dozer Source <br />minutes Altitude adj.: 1.000 NA ~ (Cat HB) <br />minutes Job efficiency : 0.830 NA (Cat HB) <br /> Net correction : 0.830 NA <br />Travel time <br />Road condition description :Rutted dirt, little maintenance, no water, 2"tire penetration <br />Haul Route <br />Seg. # Haul distance (feet) Grade (%) Roll. res. (%) Total res. (%) Velocity (fpm) Travel time (min.)•' <br />1 1,050 -3.30 5.00 1.70 2939 0.55 <br />2 1, 950 13.00 5.00 18.00 508 3.39 <br />3 200 0.00 5.00 5.00 1867 0.20 <br /> <br /> <br /> <br /> <br /> <br />Return route <br />Haul time : 4.14 minutes <br />1 200 0.00 5.00 5.00 2795 0.26 <br />2 1,950 -13.00 5.00 -8.00 2972 0.07 <br />3 1,050 3.30 5.00 8.30 1931 0.42 <br /> <br /> <br /> <br /> <br /> <br />•• travel time for each segment is adlusted ror aaRleretion/deceleration. Retum time : 0.75 minutes <br />fable velocities are max. aftainable per total resistance shown, not averege <br />Total scraper team cycle time (load + haul + maneuver and spread + return} : 6.49 minutes <br />Unadjusted unit production/hour : 480.92 LCY/hour'"" Adjusted for job conditions : 399.76 LCY/hour <br />Optimal number of scrapers per push dozer : NA Selected number of scrapers : 2 scraper(s) <br />Adjusted single scraper team (unit) houdy production : 399.16 LCYRtour <br />Adjusted multiple scraper team (fleet) hourly production : 399.16 LCY/hour <br /> <br />JOB 71ME AND COST <br />Fleet size : 1 Team(s) Total jab time : 4.70 Hours <br />Unit cost ; $1.448 /LCY Total job cost : $2,711 <br /> <br />