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<br />CIRCES Cost Estimating Software <br />BULLDOZER RIPPING WORK <br />Basic machine : Cat D7R DS Series 11 - 7SU <br />Blade type : Semi-Universal <br />Attachment no. 1 : ROPS Cab <br />Attachment no. 2 :3-shank riDDer <br />Shiftbasis : 1 per day <br />Data source:- (CRG) <br />Utilization % <br />Cost Breakdown : Ownership cost/hour : $43.75 NA <br />Dozer operating cost/hour : E$64.48 100 <br />Ripper operating cost/hour : $5.32 100 <br />Operator cost/hour : $38.54 NA <br />Total unit cost/hour : $152.09 Total fleet cost/hour : $152.09 <br />MATERIAL QUANTITIES <br />Alternate methods - <br />Seismic : NA NA <br />Area : 1.40 acres <br />Selected estimating method : Area <br />Load factor : NA Bank volume <br />Rip depth (ft) : 2.00 Volume <br />Horsepower: 240 <br />NA <br />4,517 <br />BCY <br />BCY or CCY <br />Source of estimated quantity: Proposed road conditions <br />Source of estimated l oad factor : NA -- - -- <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 : 2 <br />368 <br />53 cu <br />d <br />/h <br /> , <br />. . y <br />s. <br />our <br />Area : Avg. ripping depth : 2.00 feet/pass Site altitude : 6,900 feet <br />Average ripping width : 6.50 feet/pass Altitude adjustment : - <br />1.00 -- <br />(Cat HB) <br />Average ripping length : 300.00 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 : 0.734 acres/hour Adjusted unit production 1,965.88 cu. yds./hour <br />Unadjusted production : 2,368.53 cu. yds./hour Adjusted fleet production : 1 <br />965.88 cu <br />yds <br />/hour <br /> , . <br />. <br />JOB TIME AND COST <br />Fleet size : 1 dozer(s) Total job time : 2.30 hours <br />Unit cost : $0.077 per cu. yd. Total job cost : $349 <br /> <br />