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CIRCES Cost Estimating Software <br />MOTOR GRADER WORK <br />PROJECT IDENTIFICATION <br />Task # : 061 State :Colorado <br />Date <br />User <br />08/13/2007 <br />TAK <br />Permitfjob # : C-81-035 <br />Abbreviation :none <br />Filename : C035-061 <br />Agency or organization name :Colorado Division Of Reclamation, Mining And Safety <br />Permit or other job action : m-05 <br />Task description :Rill/gully maintenance - 8 hours, 3 times over 10 year period <br />.................................................................. <br />HOURLY EQUIPMENT COST ............................. <br />Basic machine :CAT 12H Horsepower : 140 <br />Attachment no. 1 : NA Shift basis : 1 per day <br />Attachment no. 2 : NA <br />Data source : (CRG) <br />Utilization <br />Cost Breakdown Ownership cost/hour : $16.44 NA <br />Grader operating cost/hour : $24.67 100 <br />Ripper operating cost/hour : $0.00 NA <br />Operator cost/hour : $31.95 NA <br />Total unit cosUhour : $73.05 Total fleet cosUhour : $73.05 <br />................................................................................................................................................................................................ . <br />MATERIAL QUANTITIES <br />Total area to be graded or ripped : 21.36 acres <br />Source of estimated acreage :Acreage that gives 24 hours total work <br />HOURLY PRODUCTION <br />Selected application :Finish grading (0-2.5 mph) <br />Average grader speed : 1.25 mph <br />Selected blade angle : 30 degrees * • at 0 degrees, blade is perpendicular <br />Effective blade length : 10.40 feet to direction of travel. <br />Width of blade overlap per pass : 2.00 feet <br />Net grading or ripping width per pass : 8.40 feet "' "width of ripper beam on ripping applicati ons <br />Unadjusted hourly unit production : 1.2727 acres/hour <br /> <br />Job Condition Correction Factors Source <br />Average site altitude : 7,500 feet Altitude adjustment factor : 0.83 (Cat HB) <br /> Job efficiency adjustment factor : 0.85 (1sh/d, mod.) <br /> Net job correction : 0.7055 multiplier <br /> <br />Adjusted hourly unit production : 0.8979 acres/hour <br />Adjusted hourly fleet production : 0.8979 acres/hour <br /> <br />JOB TIME AND COST <br />Fleet size : 1 grader(s) Total job time : 23.79 hours <br />Unit cost : $81.36 per acre Total job cost : $1,738 <br /> <br />County : La Plata <br />Site :King Coal Mine <br />