2010-05-21_REVISION - C1981010 (4)

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HOURLY PRODUCTION Hauling Capacity : Scraper Payload (weight) Basis : Material weight : 1,600 pounds/LCY Material description Top Soil Rated payload : 75,000 pounds Payload capacity : 46.88 LCY sheet 2 of 2 >craper Bowl (volume) Basis : Struck volume : 24.00 LCY Heaped volume : 34.00 LCY Average volume : 29.00 LCY Adjusted capacity : 29.00 LCY *** hourly production reflects volume per scraper pair on push-pull models Cycle Time : Job Condition Corrections : Site altitude (ft.) : 7,000 Scraper Push dozer Source Scraper loading time 1.00 minutes Altitude adj.: 1.000 NA (Cat HB) Maneuver and spread time : 0.60 minutes Job efficiency : 0.830 NA (Cat HB) * load time per scraper pair on push-pull models Net correction : 0.830 NA Travel time : Road condition description :Rutted dirt, little maintenance, no water, 1 " tire penetration Haul Route : Seg. # Haul distance (feet) Grade (%) Roll. res. (%) Total res. (%) Velocity (fpm) Travel time (min.)** 1 1,000 4.00 4.00 8.00 1131 0.92 2 1,500 -2.00 4.00 2.00 2939 0.65 Return route : Haul time : 1.57 minutes 1 1,500 2.00 4.00 6.00 2638 0.76 2 1,000 -4.00 4.00 0.00 2965 0.34 " travel time for each segment is adjusted for acceleration/deceleration. Return time : 1.10 minutes table velocities are max. attainable per total resistance shown, not average Total scraper team cycle time (load + haul + maneuver and spread + return) : 4.27 minutes Unadjusted unit production/hour : 815.69 LCY/hour *** Adjusted forjob conditions : 677.02 LCY/hour Optimal number of scrapers per push dozer : NA Selected number of scrapers : 8 scraper(s) Adjusted single scraper team (unit) hourly production : 2,708.10 LCY/hour Adjusted multiple scraper team (fleet) hourly production : 2,708.10 LCY/hour JOB TIME AND COST - _ Fleet size : 1 Team(s) Total job time : 211.81 Hours Unit cost : $1.134 /LCY Total job cost : $650,212