2003-03-05_REVISION - M1992016 (2)

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HOURLY PRODUCTION Hauling Capacity Scraper Payload (weight) Basis Material weight : 2,650 pounds/LCY Material description Decomposed rock - 25% Rock, 75% Earth Rated payload : 55, 000 pounds Payload capacity : 20.75 LCY Bowl (volume) Basis sheet 2 of 2 Struck volume : 18.00 LCY Heaped volume : 23.00 LCY Average volume : 20.50 LCY Adjusted capacity : 20.50 LCY "` hourly production reflects volume per scraper pair on push-pull models Cvcle Time : Job Condition Corrections : Site altitude (tt.) : 5,300 Scraper Push dozer Source Scraper loading time' : 0.90 minutes Altitude adj.: 1.000 NA (Cat HB) Maneuver and spread time : 0.70 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, 2" fire penetration Haul Route Seg. # Haul distance (feet) Grade (%) Roll. res. (%) Total res. (%) Velocity (fpm) Travel time (min.)" 1 1,000 0.50 5.00 5.50 1098 0.98 Return route Haul time : 0.98 minutes "travel time for each segment is adjusted for acceleration/deceleration. Return tlme : 0.62 minutes table velocities are max. attainable per total resistance shown, not average Total scraper team cycle time (load + haul + maneuver and spread + return) : 3.20 minutes Unadjusted unit production/hour : 384.46 LCY/hour "' Adjusted for job conditions : 319.10 LCY/hour Optimal number of scrapers per push dozer : NA Selected number of scrapers : 1 scraper(s) Adjusted single scraper team (unit) hourly production : 319.10 LCY/hour Adjusted multiple scraper team (fleet) hourly production : 319.1 D LCY/hour JOB TIME AND COST Fleet size : 1 Team(s) Total job time : 75.16 Hours Unit cost : $0.491 /LCY Total job cost : $11,780