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BULLDOZER RIPPING WORK <br />Task description: Rip stockpile area prior to topsoiling <br />Site: Glen's Pit Permit Action: 2011 Midterm Review Permit/Job#: M2005075 <br />PROJECT IDENTIFICATION <br />Task #: 04A State: Colorado <br />Date: 4/18/2011 County: Garfield <br />User: DMC <br />Agency or organization name: DRMS <br />HOURLY EQUIPMENT COST <br />Basic Machine: Cat D8R Series II - 8U <br />(2005) <br />Ripper Attachment: 3-Shank Ripper <br />Cost Breakdown: <br />Horsepower: 310 <br />Shift Basis: 1 per day <br />Data Source: (CRG) <br /> Utilization % <br />Ownership Cost/Hour: $45.97 NA <br />Operating Cost/Hour: $81.13 100 <br />Ripper Operating Cost/Hour: $6.37 100 <br />Operator Cost/Hour: $38.49 NA <br />Total Unit Cost/Hour: $171.95 <br />Total Fleet Cost/Hour: $171.95 <br /> <br />MATERIAL QUANTITIES Selected estimating method: Area <br />Alternate Methods: <br />Seismic: NA Bank Volume: NA BCY <br />Area: 1 acres Rip Depth (ft): 2.00 Volume: 3,227 <br />Source of estimated quantity: Rec. Plan <br />HOURLY PRODUCTION <br />Seismic: <br />Seismic Velocity: <br />Area: <br />NA feet/second <br />Average Ripping Depth: 1.00 mph <br />Average Ripping Width: 7.08 degrees <br />Average Ripping Length: 500.00 feet <br />Average Dozer Speed: 88.00 feet <br />Average Maneuver Time: 0.25 feet <br />Production per unit area: 0.822 acres/hour <br />Job Condition Correction Factors <br />Unadjusted Hourly Unit Production: 0.822 Acres/hr <br />Site Altitude: 5,320 feet <br />Altitude Adj: 1.00 (CAT HB) <br />Job Efficiency: 0.83 (1 shift/day) <br />Net Correction: 0.83 multiplier <br />Adjusted Hourly Unit Production: 0.68 Acres/hr <br />Adjusted Hourly Fleet Production: 0.68 Acres/hr <br />JOB TIME AND COST <br />Fleet size: 1 Grader(s) Total job time: 1.47 <br />Unit cost: $252.026 Per acre Total job cost: $252.00 <br />Abbreviation: None <br />Filename: M075-04a <br />NA <br />BCY or CCY <br />Hours <br />CIRCES Cost Estimating Software