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CIRCES Cost Estimating Software <br />BULLDOZER RIPPING WORK <br />PROJECT IDENTIFICATION <br />Task # : 270 <br />Date : 08/13/2007 <br />User : TAK <br />State :Colorado <br />County : La Plata <br />Site :King Coal Mine <br />Permit/job # : C-81-035 <br />Abbreviation :none <br />Filename : C035-270 <br />Agency or organization name :Colorado Division Of Reclamation, Mining And Safety <br />Permit or other job action : RN-05 <br />Task description :Rip surface facilities areas (mine office and coal stockpile areas) <br /> <br />HOURLY:E::::UIPMENT COST ::::::................................................................................................................................ <br />Q .................................. .............................. <br />Basic machine :Cat D8R Series 11- 8SU Horsepower : 310 <br />Blade type :Semi-Universal <br />Attachment no. 1 : BOPS Cab Shift basis : 1 per day <br />Attachment no. 2 :3-shank ripper <br /> Data source : (CRG) <br /> Utilization <br />Cost Breakdown : Ownership cost/hour : $53.92 NA <br />Dozer operating costlhour : $75.29 100 <br />Ripper operating cost/hour : $7.98 100 <br />Operator cost/hour : $32.53 NA <br />Total unit cost/hour : $169.72 Total fleet cost/hour : $169.72 <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 : 6.40 acres Rip depth (ft) : 0.50 Volume : 5,163 BCY or CCY <br /> <br />Source of estimated quantity :Surface features map <br />Source of estimated load factor :NA <br /> <br />.:::::::.:::.::::::::::.::::::.:::::::::.:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::.::::::.:::::.:::::::::::::::::::::::::::::::::::::::::::::::::::::::::.:::.:::::..:.:.:... <br />HOURLY PRODUCTION .................................. ............................. <br />Alternate methods - <br />Seismic : Seismic velocity <br />Unadjusted production <br />Area : Avg. ripping depth <br />Average ripping width <br />Average ripping length <br />Average dozer speed <br />Average maneuver time <br />Production per unit area <br />Unadjusted production <br />NA feetlsecond <br />NA cu. yds./hour <br />1.00 feet/pass <br />7.08 feet/pass <br />150.00 feet pass <br />88.00 feet minute <br />0.25 minutes/pass <br />0.748 acres/hour <br />1,207.44 cu. yds./hour <br />Unadjusted production <br />per selected method : 1,207.44 cu. yds./hour <br />Site altitude : 7,300 feet <br />Altitude adjustment : 1.00 (Cat HB) <br />Job efficiency factor : 0.83 (1 shift/day) <br />Net job correction : 0.83 multiplier <br />Adjusted unit production <br />Adjusted fleet production <br />1,002.18 <br />1,002.18 <br />cu. yds./hour <br />cu. yds./hour <br />JOB TIME AND COST <br />Fleet size : 1 dozers) Total job time : 5.15 hours <br />Unit cost : $0.169 per cu. yd. Total job cost : $874 <br />