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EARTHWORK ESTIMATING -SCRAPER WORK (SINGLE SHIFT) <br />• TASK DESCRIPTION - Redistribute Topsoil over mine bench area. <br />sediment drying areas. <br />HOURLY EQUIPMENT COST <br />MACHINE MAKE AND MODEL CAT 623E <br />OWNERSHIP 43.83 <br />OPERATING 58.08 <br />OPERATOR 20.56 <br />MACHINE COST <br />• <br /> <br />MATERIAL QUANTITIES <br />1,078 CU YD x 1.12 SWELL = <br />VERIFICATION OF VOLUMES From Fig. 2.2-2 <br />SCRAPER PRODUCTION <br />HAUL ROUTE RETURN <br />Length 2100 ft 2100 ft <br />Grade 8.3 % -8.3 <br />Roll Rst 5 % 5 <br />TL. RES. 13.3 % -3.3 <br />Velocity 557 fpm 2640 fpm <br />Trvl. Tm. 4.13 MIN 1.00 MIN <br />LOAD/SPRD 0.90 MIN 0.70 MIN <br /> TOTAL RO UND TRIP T IME <br />MATERIAL WT. 2100 LB/CUYD <br />PAYLOAD 50000 LB 23.81 <br />ALTITUDE ADJ. 0.94 <br />MAX. MACHINE PAYLOAD = 22.00 CUYD <br />PRODUCTION PER 50 MIN HOUR 153.64 <br />JOB COST <br />122.47 <br />TASK 14 <br />1,207 CU YD <br />6.73 MINUTES <br />CUYD <br />TOTAL MATERIAL VOLUME 1,207 CUBIC YARDS <br />NUMBER OF SCRAPERS 1 <br />TOTAL JOB TIME 7.86 HOURS <br />COST PER HOUR $122.47 <br />TOTAL JOB COST $962.41 <br />COST PER UNIT VOLUME $0.797 <br />Mc VOL 1 - Tbl 3.7-1 TASK 14 11 - 19 - 98 <br />