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Attachment no. 2:3-shank ripper <br /> Data source: (CRG) <br /> Utilization % - <br />Cost Breakdown : Ownership cost/hour : $53.54 NA <br /> Dozer operating cost/hour : $70.36 100 <br />Ripper operating cost/hour : $6.29 100 <br /> Operator cost/hour : $38.54 NA <br /> Total unit cost/hour : $168.72 Total fleet cost/hour : $168.72 <br /> <br /> <br />MATERIAL QUANTITIES .:..: <br /> Selected estimating method : Area <br />Alternate methods - <br />Seismic : NA NA Load factor : NA Bank volume : NA BCY <br />Area : 9.00 acres Rip depth (ft) : 1.00 Volume : 14,520 BCY or CCY <br /> <br />Source of estimated quantity :reclamation plan <br />Source of estimated load factor :NA <br /> <br /> <br />HOURLY PRODUCTION ..... <br />Alternate methods - Job Condition Correction Factors - <br />Seismic : Seismic velocity : NA feet/second Unadjusted production <br />Unadjusted production : NA cu. yds./hour per selected method : 1,134.86 cu. yds./hour <br /> <br />Area : Avg. ripping depth : 1.00 feet/pass Site altitude : 6,280 feet <br />Average ripping width : 7.08 feet/pass Altitude adjustment : 1.00 (Cat HB) <br />Average ripping length : 100.00 feet/pass Job efficiency factor : 0.83 (1 shift/day) <br />Average dozer speed : 88.00 feet/minute Net job correction : 0.83 multiplier <br />Average maneuver time : 0.25 minutes/pass <br />Production per unit area : 0.703 acres/hour Adjusted unit production : 941.94 cu. yds./hour <br />Unadjusted production : 1,134.86 cu. yds./hour Adjusted fleet production : 941.94 cu. yds./hour <br /> <br />JOB TIME AND COST <br />Fleet size : 1 dozer(s) Total job time : 15.42 hours <br />Unit cost : $0.179 per cu. yd. Total job cost : $2,601 <br />