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CIRCES Cost Estimating Software <br />MOTOR GRADER WORK <br />PROJECT IDENTIFICATION <br />Task #: 024 State :Colorado Permit/job #: C-1980-004 <br />Date : 0312612009 County :Garfield Abbreviation :none <br />User : JRS Site: Mcclane Canyon Mine Filename :0004-024 <br />Agency or organization name: Colorado Division Of Reclamation, Mining And Safety <br />Permit or other job action :2009 Midterm Review <br />Task description :Finish Grade All Backfilled Areas <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 : Multi-shank ripper <br /> Data source : (CRG)_ <br /> Utilization % <br />Cost Breakdown Ownership cost/hour : $22.80 NA <br />Grader operating cost/hour : $30.26 100 <br />Ripper operating cosUhour : $0.00 0 <br />Operator cost/hour : $24.47 NA <br />a <br />Total unit cost/hour : $77.52 Total fleet cost/hour : $77.52 <br />MATERIAL QUANTITIES <br />Total area to be graded or ripped : 6.09 acres <br />Source of estimated acreage :Operator Estimate <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 applications <br />Unadjusted hourly unit production : 1.2727 acres/hour <br />Job Condition Correction Factors Source <br />Average site altitude : 5,600 feet Altitude adjustment factor : 0.83 (Cat H8) <br /> Job efficiency adjustment factor : 0.85 (1sh1d, mod.) <br /> Net job correction : 0.7055 multiplier <br />Adjusted hourly unit production : 0.8979 acres/hour <br />Adjusted hourly fleet production : 0.8979 acres/hour <br />JOB TIME AND COST <br />Fleet size : 1 grader(s) Total job time : 6.78 hours <br />Unit cost : $86.34 per acre Total job cost : $526